博士（理学）, 東京理科大学

Fundamental physical chemistry

Nanometer-scale chemistry

Inorganic/coordination chemistry

2025 - Present
Shinshu University, Faculty of Textile Science and Technology, Associate Professor

2025 - 2025
Rikkyo University, College of Science, Research Assistant

2022 - 2024
Tokyo University of Science, Organization for Research Advancement Research Institute for Science and Technology, Junior Associate Professor

2017 - 2022
RIKKYO UNIVERSITY, College of Science Department of Chemistry, Assistant Professor

2016 - 2017
Tokyo University of Science, Graduate School of chemical Science and Technology, 博士研究員

2014 - 2016
Tokyo University of Science, Faculty of Science, Division 1 Applied Chemistry, 博士研究員

2012 - 2012, Indian Institute of Technology, Madras, Department of Chemistry

2011 - 2014, Tokyo University of Science, 総合化学研究科, 総合化学専攻

2009 - 2011, Tokyo University of Science, 総合化学研究科, 総合化学専攻

2005 - 2009, Tokyo University of Science, Faculty of Science, 化学科

2002 - 2005, 茨城県立鉾田第一高等学校, 普通科

2020 - 2022
編集委員, ナノ学会

2025
AIP Publishing, Chem. Phys. Rev. (2025), Selected as Front Cover
Harnessing metal cluster sensitizers for triplet–triplet annihilation photon upconversion: Strategies for performance enhancement
Yoshiki Niihori, Masaaki Mitsui

2025
Royal Society of Chemistry, Nanoscale (2025), Selected as Outside Back Cover
Synthesis of Au13-based building block clusters for programmed dimer formation and Au13 cluster dimer photoexcitation properties
Taiga Kosaka;Yoshiki Niihori;Tokuhisa Kawawaki;Yuichi Negishi

2025
Wiley, Small (2025), Selected as Inside Back Cover
Enhancement of Photoluminescence Quantum Yield of Silver Clusters by Heavy Atom Effect
Aoi Akiyama, Sakiat Hossain, Yoshiki Niihori, Kazutaka Oiwa, Jayoti Roy, Tokuhisa Kawawaki, Thalappil Pradeep, Yuichi Negishi

2024
American Chemical Society, Journal of American Chemical Society (2024), Selected as "Supplementary Cover"
Triplet-Mediator Ligand-Protected Metal Nanocluster Sensitizers for Photon Upconversion
Daichi Arima, Shion Hidaka, So Yokomori, Yoshiki Niihori, Yuichi Negishi, Ryuichi Oyaizu, Takumi Yoshinami, Kenji Kobayashi, Masaaki Mitsui

2024
Royal Society of Chemistry, Materials Horizons (2023), Selected as "Inside Front Cover"
Triplet-Triplet Annihilation-Based Photon Upconversion Using Nanoparticles and Nanoclusters
Yoshiki Niihori;Taiga Kosaka;Yuichi Negishi

2024
American Chemical Society, Journal of Physical Chemistry Letter (2024), Selected as "Supplementary Cover"
Tiara-Like Hexanuclear Nickel-Platinum Alloy Nanocluster
Tomoshige Okada;Tokuhisa Kawawaki;Kana Takemae;Shiho Tomihari;Taiga Kosaka;Yoshiki Niihori;Yuichi Negishi

2023
American Chemical Society, ACS Materials Letter (2024), Selected as "Supplementary Cover"
Unlocking the Potential of Atom-Precise Ag12 Cluster Assembled Material as Highly Efficient SERS Sensor for Detection of Hg2+ Ion
Riki Nakatani;Sourav Biswas;Tsukasa Irie;Yoshiki Niihori;Saikat Das;Yuichi Negishi

2023
Royal Society of Chemistry, Nanoscale (2023), Selected as "Outside Back Cover"
A New Two-dimensional Luminescent Ag12 Cluster-assembled Material and It's Catalytic Activity for Reduction of Hexacyanoferrate (III)
Riki Nakatani, Sourav Biswas, Tsukasa Irie, Jin Sakai, Daisuke Hirayama, Tokuhisa Kawawaki, Yoshiki Niihori, Saikat Das, Yuichi Negishi

2023
Royal Society of Chemistry, Chemical Communication (2023), Selected as "Outside Front Cover"
Nested Keplerian Architecture of [Cu58H20(SPr)36(PPh3)8]2+ Nanocluster
Sourav Biswas, Sakiat Hossian, Taiga Kosaka, Jin Sakai, Daichi Arima, Yoshiki Niihori, Masaaki Mitsui, De-en Jiang, Saikat Das, Song Wang, Yuichi Negishi

2023
Royal Society of Chemistry, Nanoscale (2023), Selected as "Outside Back Cover"
Synthesis and Luminescence Properties of Two Silver Cluster-Assembled Materials for Selective Fe3+ Sensing
Jin Sakai, Sourav Biswas, Tsukasa Irie, Haruna Mabuchi, Taishu Sekine, Yoshiki Niihori, Saikat Das, Yuichi Negishi

2023
Willey, Small Science (2023), Selected as "Outside Front Cover"
Yoshiki Niihori;Sayuri Miyajima;Ayaka Ikeda;Taiga Kosaka;Yuichi Negishi

2023
Royal Society of Chemistry, Nanoscale (2023), Selected as "Outside Front Cover"
Pt17 Nanocluster Electrocatalysts: Preparation and Origin of High Oxygen Reduction Reaction Activity
Tokuhisa Kawawaki;Yusuke Mitomi;Naoki Nishi;Ryuki Kurosaki;Kazutaka Oiwa;Tomoya Tanaka;Hinoki Hirase;Sayuri Miyajima;Yoshiki Niihori;D. J. Osborn;Takanori Koitaya;Gregory F. Metha;Toshihiko Yokoyama;Kenji Iida;Yuichi Negishi

2022
日本化学会, 第72回進歩賞
配位子保護金属クラスターの高分解能単離法の確立と反応性及び光機能の解明
新堀佳紀

2022
Japan Society of Colour Material, 95th JSCM Anniversary Conference, CSI Medallion Award
Yoshiki Niihori

2022
Royal Society of Chemistry, Journal of Materials Chemistry C (2022), Selected as "Outside Front Cover"
Unravelling the Origin of Dual Photoluminescence in Au2Cu6 Clusters by Triplet Sensitization and Photon Upconversion
Daishi Arima, Yoshiki Niihori, Masaaki Mitsui

2022
Royal Society of Chemistry, Nanoscale (2022), Selected as "Outside Front Cover"
Evidence for triplet-state-dominated luminescence in biicosahedral superatomic molecular Au25 clusters
Masaaki Mitsui;Yuki Wada;Ryoto Kishii;Daichi Arima;Yoshiki Niihori

2020
Wiley, Angewandte Chemie International Edition (2021), Selected as "Frontispiece" & "Hot Paper"
Single Platinum Atom Doping to Silver Clusters Enables Near‐Infrared‐to‐Blue Photon Upconversion
Yoshiki Niihori;Yuki Wada;Masaaki Mitsui

2019
Chemical Society of Japan, Bulletin of the Chemical Society of Japan (2019), Selected as "Inside Cover"
Deepening the Understanding on Thiolate-Protected Metal Clusters Using High-Performance Liquid Chromatography
Yoshiki Niihori;Sayaka Hashimoto;Yuki Koyama;Sakiat Hossain;Wataru Kurashige;Yuichi Negishi

2019
分子科学会, 第13回分子科学討論会 分子科学会優秀講演賞
発光解析に基づく配位子保護金属クラスターの平衡状態評価法の確立, Japan, Japan society
新堀佳紀、髙橋直也、三井正明

2019
American Chemical Society, Journal of Physical Chemistry C (2019), Selected as "Supplementary Cover"
Dynamic Behavior of Thiolate-Protected Gold–Silver 38-Atom Alloy Clusters in Solution
Yoshiki Niihori;Sayaka Hashimoto;Yuki Koyama;Sakiat Hossain;Wataru Kurashige;Yuichi Negishi

2018
American Chemical Society, Accounts of Chemical Research (2018), Selected as "Supplementary Cover"
Alloy Clusters: Precise Synthesis and Mixing Effects
Sakiat Hossain, Yoshiki Niihori, Lakshmi V. Nair, Bharat Kumar, Wataru Kurashige, Yuichi Negishi

2018
American Chemical Society, Journal of Physical Chemistry Letter (2018), Selected as "Supplementary Cover"
Atomic and Isomeric Separation of Thiolate-Protected Alloy Clusters, United States, Official journal
Yoshiki Niihori;Yuki Koyama;Seiichiro Watanabe;Sayaka Hashimoto;Sakiat Hossain;Lakshmi V. Nair;Bharat Kumar;Wataru Kurashige;Yuichi Negishi

2017
Royal Society of Chemistry, Nanoscale (2018), Selected as "Outside Back Cover"
High-performance Liquid Chromatography Mass Spectrometry of Gold and Alloy Clusters Protected by Hydrophilic Thiolates, United Kingdom, Official journal
Yoshiki Niihori;Daisuke Shima;Kana Yoshida;Kota Hamada;Lakshmi V. Nair;Sakiat Hossain;Wataru Kurashige;Yuichi Negishi

2017
The Chemical Society of Japan, The Chemical Record (2017), Selected as "Outside Front Cover"
Understanding and Practical Use of Ligand and Metal Exchange Reactions in Thiolate-Protected Metal Clusters to Synthesize Controlled Metal Clusters, Japan, Official journal
Yoshiki Niihori;Sakiat Hossain;Sachil Sharma;Bharat Kumar;Wataru Kurashige;Yuichi Negishi

2017
American Chemical Society, Industrial & Engineering Chemistry Research (2017), Selected as "Outside Front Cover"
Separation of Glutathionate-Protected Gold Clusters by Reversed-Phase Ion Pair High-Performance Liquid Chromatography, United States, Official journal
Yoshiki Niihori;Yoshihiro Kikuchi;Daisuke Shima;Chihiro Uchida;Sachil Sharma;Sakiat Hossain;Wataru Kurashige;Yuichi Negishi

2016
Royal Society of Chemistry, Dalton Transactions (2016), Selected as "Outside Back Cover"
Tuning the Electronic Structure of Thiolate-Protected 25-Atom Clusters by Co-Substitution with Metals Having Different Preferential Sites
Sachil Sharma, Seiji Yamazoe, Tasuku Ono, Wataru Kurashige, Yoshiki Niihori, Katsuyuki Nobusada, Tatsuya Tsukuda, Yuichi Negishi

2015
日本MRS, 第25回日本MRS奨励賞
配位子交換されたクラスターの位置異性体の高分解能分離と配位子交換反応メカニズムの解明, Japan, Japan society
新堀佳紀;菊地祥弘;加藤彩乃;根岸雄一

2015
Royal Society of Chemistry, Physical Chemistry Chemical Physics (2015), Selected as "Outside Front Cover"
High-Resolution Separation of Thiolate-Protected Gold Clusters by Reversed-Phase High-Performance Liquid Chromatography, United Kingdom, Official journal
Yoshiki Niihori;Chihiro Uchida;Wataru Kurashige;Yuichi Negishi

2015
日本化学会, 日本化学会第 95 春季年会(2015)優秀講演賞（学術）
高分解能高速液体クロマトグラフィーを駆使したチオ ラート保護金属クラスターにおける配位子交換反応のメカニ ズムの解明, Japan, Japan society
新堀佳紀;松崎未来;菊地祥弘;根岸雄一

2014
American Chemical Society, Journal of Physical Chemistry Letters (2014), Selected as "Outside Front Cover"
Recent Progress in the Functionalization Method of Thiolate-Protected Gold Clusters
Wataru Kurashige, Yoshiki Niihori, Sachil Sharma, Yuichi Negishi

2014
ナノ学会, ナノ学会第12回大会若手優秀ポスター発表賞
二成分チオラート保護金属クラスターの精密分離 ー高分解能化へのキーファクターの解明ー, Japan, Japan society
新堀佳紀;松崎未来;内田千紘;根岸雄一

2014
Royal Society of Chemistry, Nanoscale (2014), Selected as "Outside Back Cover"
Advanced Use of High-Performance Liquid Chromatography for Synthesis of Controlled Metal Clusters, United Kingdom, Official journal
Yoshiki Niihori;Miku Matsuzaki;Chihiro Uchida;Yuichi Negishi

2014
日本化学会, 日本化学会第 94 春季年会(2014)学生講演賞
高速液体クロマトグラフィーを駆使した二成分チオラ ート保護金属クラスターの精密合成, Japan, Japan society
新堀佳紀、松崎未来、内田千紘、根岸雄一

2014
学校法人東京理科大学, 1） 平成25年度東京理科大学学生表彰（TUS AWARD）
新堀佳紀

2013
Royal Society of Chemistry, Physical Chemistry Chemical Physics (2013), Selected as "Outside Front Cover"
Toward the Creation of Stable, Functionalized Metal Clusters
Yuichi Negishi, Wataru Kurashige, Yoshiki Niihori, Katsuyuki Nobusada

2013
分子科学会, 第７回分子科学討論会(京都)2013 分子科学会優秀ポスター賞
配位子交換と逆相カラムの駆使による二種類のチオラートにより保護された金属クラスターの精密かつ系統的な合成法の確立, Japan, Japan society
新堀佳紀、松崎未来、根岸雄一

2012
Royal Society of Chemistry, Nanoscale (2013), Selected as "Outside Back Cover"
Remarkable Enhancement in Ligand-Exchange Reactivity of Thiolate-Protected Au25 Nanocluster by Single Pd Atom Doping, United Kingdom, Official journal
Yoshiki Niihori;Wataru Kurashige;Miku Matsuzaki;Yuichi Negishi

2011
Royal Society of Chemistry, Chemical Communication (2011), Selected as "Outside Back Cover"
Isolation and Structural Characterization of Magic Silver Clusters Protected by 4-(tert-butyl)benzyl Mercaptan
Yuichi Negishi, Wataru Kurashige, Yoshiki Niihori, Takeshi Iwasa, Katsuyuki Nobusada

2009
（財）科学技術振興会, 小玉記念科学賞
新堀佳紀

Triggering Photoluminescence in High-Nuclear Silver Nanoclusters via Extra Silver Atom Incorporation
Aoi Akiyama; Sakiat Hossain; Sourav Biswas; Takafumi Shiraogawa; Pei Zhao; Mana Nakamoto; Daiji Ogata; Tokuhisa Kawawaki; Yoshiki Niihori; Junpei Yuasa; Masahiro Ehara; Yuichi Negishi
Journal of the American Chemical Society, 147(41), 37231-37241, Sep. 2025, Refereed
Lead

Harnessing metal cluster sensitizers for triplet–triplet annihilation photon upconversion: Strategies for performance enhancement
Yoshiki Niihori; Masaaki Mitsui
Chemical Physics Reviews, 6(3), 031301, Jun. 2025, Refereed, Invited
Lead

Enhancement of Photoluminescence Quantum Yield of Silver Clusters by Heavy Atom Effect
Aoi Akiyama; Sakiat Hossain; Yoshiki Niihori; Kazutaka Oiwa; Jayoti Roy; Tokuhisa Kawawaki; Thalappil Pradeep; Yuichi Negishi
Small, 2500700, May 2025, Refereed, Not invited
Corresponding

Synthesis of Au13-based building block clusters for programmed dimer formation and Au13 cluster dimer photoexcitation properties
Taiga Kosaka; Yoshiki Niihori; Tokuhisa Kawawaki; Yuichi Negishi
Nanoscale, 7(20), 12695-12703, Apr. 2025, Refereed, Not invited
Corresponding

Highly Selective Methanol Synthesis Using Electrochemical CO₂ Reduction with Defect‐Engineered Cu₅₈ Nanoclusters
Sourav Biswas; Tomoya Tanaka; Haohong Song; Masaki Ogami; Yamato Shingyouchi; Sakiat Hossian; Maho Kamiyama; Taiga Kosaka; Riki Nakatani; Yoshiki Niihori; Saikat Das; Tokuhisa Kawawaki; De‐en Jiang; Yuichi Negishi
Small Science, 5(2), 2400465, Nov. 2024, Refereed, Not invited

Atomically Precise Au24Pt(thiolate)12(dithiolate)3 Nanoclusters with Excellent Electrocatalytic Hydrogen Evolution Reactivity
Miyu Sera; Sakiat Hossain; Sara Yoshikawa; Kana Takemae; Ayaka Ikeda; Tomoya Tanaka; Taiga Kosaka; Yoshiki Niihori; Tokuhisa Kawawaki; Yuichi Negishi
Journal of the American Chemical Society, 146(43), 29684-29693, Oct. 2024, Refereed, Not invited

Controlled aggregation of Pt/PtH/Rh/RhH doped silver superatomic nanoclusters into 16-electron supermolecules
Tzu-Hao Chiu; Michael N. Pillay; Ying-Yann Wu; Yoshiki Niihori; Yuichi Negishi; Jie-Ying Chen; Yuan Jang Chen; Samia Kahlal; Jean-Yves Saillard; C. W. Liu
Chemical Science, 15(36), 14660-14667, Aug. 2024, Refereed, Not invited

Triplet-Mediator Ligand-Protected Metal Nanocluster Sensitizers for Photon Upconversion
Daichi Arima; Shion Hidaka; So Yokomori; Yoshiki Niihori; Yuichi Negishi; Ryuichi Oyaizu; Takumi Yoshinami; Kenji Kobayashi; Masaaki Mitsui
Journal of the American Chemical Society, 16(24), 16630-16638, May 2024, Refereed, Not invited

Tiara-like Hexanuclear Nickel–Platinum Alloy Nanocluster
Tomoshige Okada; Tokuhisa Kawawaki; Kana Takemae; Shiho Tomihari; Taiga Kosaka; Yoshiki Niihori; Yuichi Negishi
The Journal of Physical Chemistry Letters, Feb. 2024, Refereed, Not invited

Triplet–triplet annihilation-based photon upconversion using nanoparticles and nanoclusters
Yoshiki Niihori; Taiga Kosaka; Yuichi Negishi
Materials Horizons, 11(10), 2304-2322, 2024, Refereed
Lead, Corresponding

Unlocking the Potential of an Atom-Precise Ag₁₂ Cluster Assembled Material as a Highly Efficient SERS Sensor for the Detection of Hg²⁺ Ions
Riki Nakatani; Sourav Biswas; Tsukasa Irie; Yoshiki Niihori; Saikat Das; Yuichi Negishi
ACS Materials Letters, 6(2), 438-445, Dec. 2023, Refereed

Clarifying the Electronic Structure of Anion-Templated Silver Nanoclusters by Optical Absorption Spectroscopy and Theoretical Calculation
Yusuke Horita; Sakiat Hossain; Mai Ishimi; Pei Zhao; Miyu Sera; Tokuhisa Kawawaki; Shinjiro Takano; Yoshiki Niihori; Toshikazu Nakamura; Tatsuya Tsukuda; Masahiro Ehara; Yuichi Negishi
Journal of the American Chemical Society, Oct. 2023

Vertex‐Shared Linear Superatomic Molecules: Stepping Stones to Novel Materials Composed of Noble Metal Clusters
Yoshiki Niihori; Sayuri Miyajima; Ayaka Ikeda; Taiga Kosaka; Yuichi Negishi
Small Science, 3(5), Apr. 2023, Refereed, Invited
Lead

Key factors for connecting silver-based icosahedral superatoms by vertex sharing
Sayuri Miyajima; Sakiat Hossain; Ayaka Ikeda; Taiga Kosaka; Tokuhisa Kawawaki; Yoshiki Niihori; Takeshi Iwasa; Tetsuya Taketsugu; Yuichi Negishi
Communications Chemistry, 6(1), Mar. 2023, Refereed, Invited

Pt₁₇ nanocluster electrocatalysts: preparation and origin of high oxygen reduction reaction activity
Tokuhisa Kawawaki; Yusuke Mitomi; Naoki Nishi; Ryuki Kurosaki; Kazutaka Oiwa; Tomoya Tanaka; Hinoki Hirase; Sayuri Miyajima; Yoshiki Niihori; D. J. Osborn; Takanori Koitaya; Gregory Metha; Toshihiko Yokoyama; Kenji Iida; Yuichi Negishi
Nanoscale, 15, 7272-7279, Mar. 2023, Refereed

A new two-dimensional luminescent Ag12 cluster-assembled material and its catalytic activity for reduction of hexacyanoferrate(iii)
Riki Nakatani; Sourav Biswas; Tsukasa Irie; Jin Sakai; Daisuke Hirayama; Tokuhisa Kawawaki; Yoshiki Niihori; Saikat Das; Yuichi Negishi
Nanoscale, 2023

Nested Keplerian architecture of [Cu₅₈H₂₀(SPr)₃₆(PPh₃)₈]²⁺ nanoclusters
Sourav Biswas; Sakiat Hossian; Taiga Kosaka; Jin Sakai; Daichi Arima; Yoshiki Niihori; Masaaki Mitsui; De-en Jiang; Saikat Das; Song Wang; Yuichi Negishi
Chemical Communications, 59(61), 9336-9339, 2023, Refereed, Not invited

Synthesis and luminescence properties of two silver cluster-assembled materials for selective Fe³⁺ sensing
Jin Sakai; Sourav Biswas; Tsukasa Irie; Haruna Mabuchi; Taishu Sekine; Yoshiki Niihori; Saikat Das; Yuichi Negishi
Nanoscale, 15(29), 12227-12234, 2023, Refereed, Not invited

Improved activity for the oxygen evolution reaction using a tiara-like thiolate-protected nickel nanocluster
Sota Funaki; Tokuhisa Kawawaki; Tomoshige Okada; Kana Takemae; Sakiat Hossain; Yoshiki Niihori; Takumi Naito; Makito Takagi; Tomomi Shimazaki; Soichi Kikkawa; Seiji Yamazoe; Masanori Tachikawa; Yuichi Negishi
Nanoscale, 15(11), 5201-5208, 2023, Refereed

Charge-Transfer-Mediated Mechanism Dominates Oxygen Quenching of Ligand-Protected Noble-Metal Cluster Photoluminescence
Masaaki Mitsui; Daichi Arima; Atsuki Uchida; Kouta Yoshida; Yamato Arai; Kakeru Kawasaki; Yoshiki Niihori
The Journal of Physical Chemistry Letters, 13, 9272-9278, Oct. 2022, Refereed
Last

On the Origin of Photoluminescence Enhancement in Biicosahedral AgxAu25-x Nanoclusters (x=0-13) and Their Application to Triplet-Triplet Annihilation Photon Upconversion
Masaaki Mitsui; Daichi Arima; Yuki Kobayashi; Eunji Lee; Yoshiki Niihori
Advanced Optical Materials, 10, 2200864, Jul. 2022, Refereed, Not invited
Last

Evidence for triplet-state-dominated luminescence in biicosahedral superatomic molecular Au-25 clusters
Masaaki Mitsui; Yuki Wada; Ryoto Kishii; Daichi Arima; Yoshiki Niihori
Nanoscale, 14(22), Jun. 2022, Refereed, Not invited
Last

Unravelling the origin of dual photoluminescence in Au₂Cu₆ clusters by triplet sensitization and photon upconversion
Daichi Arima; Yoshiki Niihori; Masaaki Mitsui
Journal of Materials Chemistry C, 10(12), 4597-4606, 2022, Refereed

Excited-State Symmetry Breaking in a Multiple Multipolar Chromophore Probed by Single-Molecule Fluorescence Imaging and Spectroscopy
Masaaki Mitsui; Yasushi Takakura; Kazuya Hirata; Yoshiki Niihori; Yutaka Fujiwara; Kenji Kobayashi
The Journal of Physical Chemistry B, 125(35), 9950-9959, Aug. 2021

Starburst-Shaped D−π–A Chromophores Possessing a Hexaethynylbenzene Core for Dye-Sensitized Solar Cells
Masaaki Mitsui; Yushiro Nakagome; Yoshiki Niihori; Shota Inoue; Yutaka Fujiwara; Kenji Kobayashi
ACS Applied Materials & Interfaces, 13(30), 35739-35749, Aug. 2021, Refereed

Single Platinum Atom Doping to Silver Clusters Enables Near‐Infrared‐to‐Blue Photon Upconversion
Yoshiki Niihori; Yuki Wada; Masaaki Mitsui
Angewandte Chemie International Edition, 60(6), 2822-2827, Feb. 2021
Lead

Synthesis and Properties of a Cyclohexa‐2,7‐anthrylene Ethynylene Derivative
Hironori Matsuki; Keisuke Okubo; Yuta Takaki; Yoshiki Niihori; Masaaki Mitsui; Eiichi Kayahara; Shigeru Yamago; Kenji Kobayashi
Angewandte Chemie International Edition, 60(2), 998-1003, Jan. 2021

Photophysical and Thermodynamic Properties of Ag29(BDT)12(TPP)x (x = 0−4) Clusters in Secondary Ligand Binding-Dissociation Equilibria Unraveled by Photoluminescence Analysis
Yoshiki Niihori; Naoya Takahashi; Masaaki Mitsui
Journal of Physical Chemistry C, 124(10), 5880-5886, Feb. 2020, Refereed, Not invited
Lead

Dynamic Behavior of Thiolate-Protected Gold–Silver 38-Atom Alloy Clusters in Solution
Yoshiki Niihori
The Journal of Physical Chemistry C, 123(21), 13324-13329, May 2019, Refereed, Not invited

Excited-State Symmetry Breaking of a Symmetrical Donor−π–Donor Quadrupolar Molecule at a Polymer/Glass Interface
Masaaki Mitsui; Yasushi Takakura; Yoshiki Niihori; Masashi Nakamoto; Yutaka Fujiwara; Kenji Kobayashi
Journal of Physical Chemistry C, 123(21), 14564-14572, May 2019, Refereed, Not invited

Deepening the Understanding of Thiolate-Protected Metal Clusters Using High-Performance Liquid Chromatography
Yoshiki Niihori
Bulletin of the Chemical Society of Japan, 92(3), 664-695, Mar. 2019, Refereed, Not invited

Alloy Clusters: Precise Synthesis and Mixing Effects
Sakiat Hossain; Yoshiki Niihori; Lakshmi V. Nair; Bharat Kumar; Wataru Kurashige; Yuichi Negishi
Accounts of Chemical Research, 51(21), 3114-3124, Nov. 2018, Refereed, Invited

Impacts of Environmental Rigidity on Photophysical Characteristics and Behaviors of a Quadrupolar Chromophore Revealed by Single-Molecule Fluorescence Spectroscopic Study
Toshinari Mizukami; Shota Inoue; Hirokazu Ohsawa; Yoshiki Niihori; Kenji Kobayashi; Masaaki Mitsui
Journal of Physical Chemistry C, 122(37), 21295-21307, Sep. 2018, Refereed, Not invited

Atomic and Isomeric Separation of Thiolate-Protected Alloy Clusters
Yoshiki Niihori; Yuki Koyama; Seiichiro Watanabe; Sayaka Hashimoto; Sakiat Hossain; Lakshmi V. Nair; Bharat Kumar; Wataru Kurashige; Yuichi Negishi
The Journal of Physical Chemistry Letters, 9(17), 4930-4934, Aug. 2018, Refereed, Not invited

Au25-Loaded BaLa4Ti4O15 Water-Splitting Photocatalyst with Enhanced Activity and Durability Produced Using New Chromium Oxide Shell Formation Method
Wataru Kurashige; Rina Kumazawa; Daiki Ishii; Rui Hayashi; Yoshiki Niihori; Sakiat Hossain; Lakshmi V. Nair; Tomoaki Takayama; Akihide Iwase; Seiji Yamazoe; Tatsuya Tsukuda; Akihiko Kudo; Yuichi Negishi
The Journal of Physical Chemistry C, 122(25), 13669-13681, Jun. 2018, Refereed, Not invited

Thiolate-Protected Trimetallic Au∼20Ag∼4Pd and Au∼20Ag∼4Pt Alloy Clusters with Controlled Chemical Composition and Metal Positions
Sakiat Hossain; Tasuku Ono; Mahiro Yoshioka; Guoxiang Hu; Mai Hosoi; Zhaoheng Chen; Lakshmi V. Nair; Yoshiki Niihori; Wataru Kurashige; De-En Jiang; Yuichi Negishi
Journal of Physical Chemistry Letters, 9(10), 2590-2594, May 2018, Refereed, Not invited

High-performance liquid chromatography mass spectrometry of gold and alloy clusters protected by hydrophilic thiolates
Yoshiki Niihori; Daisuke Shima; Kana Yoshida; Kota Hamada; Lakshmi V. Nair; Sakiat Hossain; Wataru Kurashige; Yuichi Negishi
Nanoscale, 10(4), 1641-1649, Jan. 2018, Refereed, Not invited

Cover Picture: Understanding and Practical Use of Ligand and Metal Exchange Reactions in Thiolate-Protected Metal Clusters to Synthesize Controlled Metal Clusters (The Chemical Record 5/2017)
Yoshiki Niihori; Sakiat Hossain; Sachil Sharma; Bharat Kumar; Wataru Kurashige; Yuichi Negishi
The Chemical Record, 17(5), 472-472, May 2017

[Pt-17(CO)(12)(PPh3)(8)](n+) (n=1, 2): Synthesis and Geometric and Electronic Structures
Lakshmi V. Nair; Sakiat Hossain; Shota Wakayama; Shunjiro Takagi; Mahiro Yoshioka; Jun Maekawa; Atsuya Harasawa; Bharat Kumar; Yoshiki Niihori; Wataru Kurashige; Yuichi Negishi
Journal of Physical Chemistry C, 121(20), 11002-11009, May 2017, Refereed, Not invited

Perspective: Exchange reactions in thiolate-protected metal clusters
Yoshiki Niihori; Sakiat Hossain; Bharat Kumar; Lakshmi V. Nair; Wataru Kurashige; Yuichi Negishi
APL Materials, 5(5), 053201, May 2017, Refereed, Invited
Lead

Understanding and Practical Use of Ligand and Metal Exchange Reactions in Thiolate-Protected Metal Clusters to Synthesize Controlled Metal Clusters
Yoshiki Niihori; Sakiat Hossain; Sachil Sharma; Bharat Kumar; Wataru Kurashige; Yuichi Negishi
Chemical Record, 17(5), 473-484, May 2017, Refereed, Invited
Lead

Separation of Glutathionate-Protected Gold Clusters by Reversed-Phase Ion-Pair High-Performance Liquid Chromatography
Yoshiki Niihori; Yoshihiro Kikuchi; Daisuke Shima; Chihiro Uchida; Sachil Sharma; Sakiat Hossain; Wataru Kurashige; Yuichi Negishi
Industrial & Engineering Chemistry Research, 56(4), 1029-1035, Feb. 2017, Refereed, Invited
Lead

Ligand Exchange Reactions in Thiolate-Protected Au-25 Nanoclusters with Selenolates or Tellurolates: Preferential Exchange Sites and Effects on Electronic Structure
Sakiat Hossain; Wataru Kurashige; Shota Wakayama; Bharat Kumar; Lakshmi V. Nair; Yoshiki Niihori; Yuichi Negishi
Journal of Physical Chemistry C, 120(45), 25861-25869, Nov. 2016, Refereed, Not invited

Precise synthesis, functionalization and application of thiolate-protected gold clusters
Wataru Kurashige; Yoshiki Niihori; Sachil Sharma; Yuichi Negishi
Coordination Chemistry Reviews, 320, 238-250, Aug. 2016, Refereed, Invited

Improvements in the Ligand-Exchange Reactivity of Phenylethanethiolate-Protected Au-25 Nanocluster by Ag or Cu Incorporation
Yoshiki Niihori; Makoto Eguro; Ayano Kato; Sachil Sharma; Bharat Kumar; Wataru Kurashige; Katsuyuki Nobusada; Yuichi Negishi
Journal of Physical Chemistry C, 120(26), 14301-14309, Jul. 2016, Refereed, Not invited
Lead

High-resolution separation of thiolate-protected gold clusters by reversed-phase high-performance liquid chromatography
Yoshiki Niihori; Chihiro Uchida; Wataru Kurashige; Yuichi Negishi
Physical Chemistry Chemical Physics, 18(6), 4251-4265, Feb. 2016, Refereed, Invited
Lead

Tuning the electronic structure of thiolate-protected 25-atom clusters by co-substitution with metals having different preferential sites
Sachil Sharma; Seiji Yamazoe; Tasuku Ono; Wataru Kurashige; Yoshiki Niihori; Katsuyuki Nobusada; Tatsuya Tsukuda; Yuichi Negishi
Dalton Transactions, 45(45), 18064-18068, 2016, Refereed, Not invited

Understanding Ligand-Exchange Reactions on Thiolate-Protected Gold Clusters by Probing Isomer Distributions Using Reversed-Phase High-Performance Liquid Chromatography
Yoshiki Niihori; Yoshihiro Kikuchi; Ayano Kato; Miku Matsuzaki; Yuichi Negishi
ACS Nano, 9(9), 9347-9356, Sep. 2015, Refereed, Not invited
Lead

Controlled Loading of Small Au-n Clusters (n=10-39) onto BaLa4Ti4O15 Photocatalysts: Toward an Understanding of Size Effect of Cocatalyst on Water-Splitting Photocatalytic Activity
Yuichi Negishi; Yoshiki Matsuura; Ryota Tomizawa; Wataru Kurashige; Yoshiki Niihori; Tomoaki Takayama; Akihide Iwase; Akihiko Kudo
The Journal of Physical Chemistry C, 119(20), 11224-11232, May 2015, Refereed, Not invited

ChemInform Abstract: Recent Progress in the Functionalization Methods of Thiolate-Protected Gold Clusters
Wataru Kurashige; Yoshiki Niihori; Sachil Sharma; Yuichi Negishi
ChemInform, 46(7), no-no, Jan. 2015

A Critical Size for Emergence of Nonbulk Electronic and Geometric Structures in Dodecanethiolate-Protected Au Clusters
Yuichi Negishi; Tafu Nakazaki; Sami Maloa; Shinjiro Takano; Yoshiki Niihori; Wataru Kurashige; Seiji Yamazoe; Tatsuya Tsukuda; Hannu Hakkinen
Journal of the American Chemical Society, 137(3), 1206-1212, Jan. 2015, Refereed, Not invited

Recent Progress in the Functionalization Methods of Thiolate-Protected Gold Clusters
Wataru Kurashige; Yoshiki Niihori; Sachil Sharma; Yuichi Negishi
Journal of Physical Chemistry Letters, 5(23), 4134-4142, Dec. 2014, Refereed, Invited

金属クラスターに対する高次の精密合成技術の確立
新堀佳紀
Mar. 2014, Not invited
Lead

Advanced use of high-performance liquid chromatography for synthesis of controlled metal clusters
Yoshiki Niihori; Miku Matsuzaki; Chihiro Uchidaa; Yuichi Negishi
Nanoscale, 6(14), 7889-7896, 2014, Not invited
Lead

Toward the creation of stable, functionalized metal clusters
Yuichi Negishi; Wataru Kurashige; Yoshiki Niihori; Katsuyuki Nobusada
Physical Chemistry Chemical Physics, 15(43), 18736-18751, Nov. 2013, Refereed, Invited

Separation of Precise Compositions of Noble Metal Clusters Protected with Mixed Ligands
Yoshiki Niihori; Miku Matsuzaki; Thalappil Pradeep; Yuichi Negishi
Journal of the American Chemical Society, 135(13), 4946-4949, Apr. 2013, Refereed, Not invited
Lead

Remarkable enhancement in ligand-exchange reactivity of thiolate-protected Au-25 nanoclusters by single Pd atom doping
Yoshiki Niihori; Wataru Kurashige; Miku Matsuzaki; Yuichi Negishi
Nanoscale, 5(2), 508-512, 2013, Refereed, Not invited
Lead

Isolation and structural characterization of magic silver clusters protected by 4-(tert-butyl)benzyl mercaptan
Yuichi Negishi; Rio Arai; Yoshiki Niihori; Tatsuya Tsukuda
Chemical Communications, 47(20), 5693-5695, 2011, Refereed, Not invited

Isolation, structure, and stability of a dodecanethiolate-protected Pd1Au24 cluster
Yuichi Negishi; Wataru Kurashige; Yoshiki Niihori; Takeshi Iwasa; Katsuyuki Nobusada
Physical Chemistry Chemical Physics, 12(23), 6219-6225, 2010, Refereed, Not invited

錯形成を駆動力とする金属クラスターの連結
新堀佳紀; 幸坂大河; 根岸雄一
第18回分子科学討論会要旨集, Sep. 2024, Not invited
Lead

銀-硫黄クラスターの精密合成と物性評価
新堀佳紀; 秋山葵; 根岸雄一
界面科学研究部門夏季シンポジウム要旨集, Aug. 2024, Invited
Lead

配位子交換反応に基づいた金属クラスター連結体の創製
新堀佳紀; 幸坂大河; 根岸雄一
第17回分子科学討論会要旨集, Sep. 2023, Not invited
Lead

配位子保護金属クラスターの高分解能単離法の確立と反応性及び光機能の解明
新堀佳紀
日本化学会103回春季年会要旨集, Mar. 2023, Invited
Lead, Corresponding

高速液体クロマトグラフィーによる配位子保護金属クラスターの高分解能分離
新堀佳紀; 根岸雄一
分離技術, 55, 56 - 62, 2023, Refereed, Invited
Lead

進歩賞受賞解説記事：配位子保護金属クラスターの高分解能単離法の確立と反応性及び光機能の解明
新堀佳紀
化学と工業2023年3月号, 157 - 157, 2023, Refereed, Invited
Lead, Corresponding

スルフォネート保護銀ナノクラスターの合成と発光特性評価
秋山葵; Sakiat Hossain; 新堀佳紀; 川脇徳久; 緒方大二; Pei Zhao; 湯浅順平; 江原正博; 根岸雄一
ナノ学会会報, 22, 11 - 15, 2023, Refereed, Invited

Inclusion of C₆₀@[10]CPP in a Cyclohexa-2,7-(4,5-diaryl)anthrylene Ethynylene Derivative
米谷樹; 新堀佳紀; 三井正明; 茅原栄一; 山子茂; 小林健二
基礎有機化学討論会要旨集, 32nd (CD-ROM), 2022

Elucidation of Excited States of Ligand-Protected Metal Clusters and Application of Triplet Sensitization
新堀佳紀; 内田惇木; 三井正明
ナノ学会大会講演予稿集, 20th, 2022

Elucidation of the excited state relaxation processes of ligand-protected Au-Cu alloy clusters-Photon upconversion analysis approach-
有馬大地; 新堀佳紀; 三井正明
ナノ学会大会講演予稿集, 20th, 2022

Photophysics of Thiolate-Protected Noble Metal Clusters: Current Understanding and Applications
新堀佳紀; 三井正明
光化学, 52(2), 67 - 74, Aug. 2021, Invited
Lead

配位子保護金属クラスターを用いた近赤外－可視光変換
新堀佳紀
Chem-Station, スポットライトリサーチ, Jun. 2021
Lead

Near-infrared-to-blue photon upconversion using thiolate-protected silver clusters as triplet sensitizers
新堀佳紀; 和田悠幹; 三井正明
ナノ学会大会講演予稿集, 19th, 2021

Excited triplet state formation in ligand-protected Au₂Cu₆ clusters
有馬大地; 新堀佳紀; 三井正明
ナノ学会大会講演予稿集, 19th, 2021

Impact of phosphine ligands on the excited-state relaxation processes of Au₂Cu₆ clusters
有馬大地; 新堀佳紀; 三井正明
分子科学討論会講演プログラム&要旨(Web), 15th, 2021

Photon upconversion using ligand-protected gold clusters as triplet sensitizers
和田悠幹; 新堀佳紀; 吉波拓巳; 小林健二; 三井正明
分子科学討論会講演プログラム&要旨(Web), 15th, 2021

Contribution of triplet nature to the emission process of highly luminescent Ag₁₃Au₁₂ clusters
三井正明; 小林有希; 有馬大地; 新堀佳紀
分子科学討論会講演プログラム&要旨(Web), 15th, 2021

Effect of ligand type on photon upconversion properties of platinum-doped silver clusters
新堀佳紀; 内田惇木; 三井正明
分子科学討論会講演プログラム&要旨(Web), 15th, 2021

Synthesis of fluorescent organic ligand protected Au₂Cu₆ clusters for photon upconversion
高山竜一; 有馬大地; 新堀佳紀; 吉波拓巳; 小林健二; 三井正明
分子科学討論会講演プログラム&要旨(Web), 15th, 2021

The effects of counter ions on the optical properties of Ag₂₅ clusters
高橋直也; 新堀佳紀; 三井正明
ナノ学会大会講演予稿集, 18th, 2020

Effects of phosphine secondary ligands on photoluminescence and equilibrium properties of Ag₂₉ clusters
高山竜一; 新堀佳紀; 三井正明
ナノ学会大会講演予稿集, 18th, 2020

注目の論文「意外と柔らかい？ナノの世界の小さな金属」
新堀佳紀
月刊化学2020年1月号, 75(1), 65 - 66, 2020, Refereed, Invited
Lead, Corresponding

発光解析に基づく配位子保護金属クラスターの平衡状態評価法の確立
新堀佳紀; 高橋直也; 三井正明
第13回分子科学討論会要旨集, Sep. 2019, Not invited
Lead

逆相高速液体クロマトグラフィーによるフェニルエタンチオラート保護金銀38原子合金クラスターの原子精度での精密分離
橋本彩加; 新堀佳紀; 根岸雄一
分析化学, 68(10), 769 - 776, Jul. 2019, Invited

HPLCによるチオラート保護金属クラスターの基本的性質の解明
根岸雄一; 橋本彩加; 海老名彩乃; 浜田幸太; 若松光祐; 新堀佳紀
分析化学, 68(11), 825 - 838, 2019, Refereed, Invited
Last

ペリレンジイミド配位子で修飾した金属クラスターの精密合成と光物性評価
小林有希; 吉波拓巳; 新堀佳紀; 小林健二; 三井正明
光化学討論会要旨集(CD-ROM), 2019, 2019

発光解析を用いた金属クラスターの平衡状態の評価
新堀佳紀; 高橋直也; 三井正明
光化学討論会要旨集(CD-ROM), 2019, 2019

発光解析に基づくAg₂₉クラスターの配位子結合-解離反応における平衡定数の決定
高橋直也; 新堀佳紀; 三井正明
ナノ学会大会講演予稿集, 17th, 2019

Ag29クラスターの光励起状態に配位子の結合-解離の動的平衡が及ぼす影響
新堀佳紀; 高橋直也; 陶山めぐみ; 三井正明
2018年光化学討論会要旨集, Sep. 2018, Not invited
Lead

Ag29クラスター配位子の結合-解離の動的平衡に基づく光励起状態挙動
新堀佳紀; 高橋直也; 陶山めぐみ; 三井正明
第12回分子科学討論会要旨集, Sep. 2018, Not invited
Lead

超高分解能分離に基づいた金属クラスターの精密合成とその評価
新堀佳紀
第2回電子スピンサイエンス若手研究会要旨集, Jul. 2018, Not invited
Lead, Corresponding

Ag29クラスターの光誘起電荷移動の速度論的解析
新堀佳紀; 陶山めぐみ; 三井正明
ナノ学会第16回大会要旨集, May 2018, Not invited
Lead

Atomically Precise Synthesis of Thiolate-Protected Metal Clusters Based on High-Resolution Separation
新堀佳紀; 根岸雄一
日本化学会第97回春季年会要旨集, Mar. 2017
Lead

Ligand-Exchange Reactions in Thiolate-Protected Gold Nanocluster
若山彰太; Hossain Sakiat; 藏重亘; 新堀佳紀; 根岸雄一
ナノ学会会報, 15(1), 7 - 13, Nov. 2016, Refereed, Invited

高分解能分離技術に基づいたチオラート保護金属クラスターの超精密合成
新堀佳紀; 根岸雄一
第10回分子科学討論会要旨集, Sep. 2016, Not invited
Lead

高速液体クロマトグラフィーを活用したチオラート保護金属クラスターの精密分離
新堀佳紀; 根岸雄一
ナノ学会第14回大会要旨集, Jun. 2016, Not invited
Lead

High-Resolution Separation of Thiolate-Protected Metal Clusters by Reversed-Phase High-Performance Liquid Chromatography
新堀佳紀; 内田千紘; 藏重亘; 根岸 雄一
ナノ学会会報, 14(2), 57 - 64, Mar. 2016, Refereed, Invited

Precise Synthesis of Metal Clusters and Their Application as Active Sites of Water-Splitting Semiconductor Photocatalyst
新堀佳紀; 藏重亘; 根岸雄一
セラミック, 51(11), 781 - 784, 2016, Invited
Lead

配位子交換されたクラスターの位置異性体の高分解能分離と配位子交換反応メカニズムの解明
新堀佳紀; 菊地祥弘; 加藤彩乃; 根岸雄一
第25回日本MRS年次大会要旨集, Dec. 2015, Not invited
Lead

高速液体クロマトグラフィーを用いたチオラート保護金属クラスターにおける配位子交換反応のメカニズムの解明
新堀佳紀; 菊地祥弘; 加藤彩乃; 根岸雄一
第9回分子科学討論会要旨集, Sep. 2015, Not invited
Lead

High-Resolution Separation of Thiolate-Protected Metal Nanoclusters by Reverse-Phase High-Performance Liquid Chromatography
新堀佳紀; 根岸雄一
ナノ学会会報, 13(1), 29 - 35, Oct. 2014, Invited
http://id.ndl.go.jp/bib/025903673
Lead

金属クラスターの精密組成制御に基づく高機能ナノ物質の創製
新堀佳紀
第11回東京理科大学特定研究助成金成果報告会要旨集, Jun. 2014, Not invited
Lead

二成分チオラート保護金属クラスターの精密分離 －高分解能化のキーファクターの解明－」
新堀佳紀; 松崎未来; 内田千紘; 根岸雄一
ナノ学会第12回大会要旨集, May 2014, Not invited
Lead

高速液体クロマトグラフィーを駆使した二成分チオラート保護金属クラスターの精密合成
新堀佳紀; 松崎未来; 内田千紘; 根岸雄一
日本化学会第94春季年会要旨集, Mar. 2014, Not invited
Lead

配位子交換と逆相カラムの駆使による二種類のチオラートにより保護された金属クラスターの精密かつ系統的な合成法の確立
新堀佳紀; 松崎未来; 根岸雄一
第7回分子科学討論会要旨集, Sep. 2013, Not invited
Lead

高速液体クロマトグラフィーによる二成分チオラート保護金属クラスターの高分解能分離
新堀佳紀; 根岸雄一
東京理科大学総合科学研究機構界面科学部門スタートアップ会議要旨集, Jul. 2013, Not invited
Lead

チオラート保護金クラスターの配位子交換反応におけるPdドープの効果
新堀佳紀; 藏重亘; 松﨑未来; 根岸雄一
第93回日本化学会春期年会要旨集, Mar. 2013, Not invited
Lead

高速液体クロマトグラフィーを駆使した二成分チオラート保護金属クラスターの精密分離
新堀佳紀; 松崎未来; 内田千紘; 根岸雄一
CSJ化学フェスタ第3回大会要旨集, Mar. 2013, Not invited
Lead

PVP保護金属二成分クラスターにおける安定組成
新堀佳紀; 根岸雄一
第92回日本化学会春期年会要旨集, Mar. 2012, Not invited
Lead

アルキル基に保護されたシリコンナノクラスターの質量分析
新堀佳紀; 根岸雄一
ナノ学会第8回大会要旨集, May 2010, Not invited
Lead

1.5nmの粒径をもつアルキル基保護シリコンクラスターのサイズ選択的合成と化学組成評価
新堀佳紀; 根岸雄一
第19回日本MRS学術シンポジウム要旨集, Dec. 2009, Not invited
Lead

Descriptive Inorganic Chemistry Researches of Metal Compounds; Chapter 3. Controlled Thiolate-Protected Gold and Alloy Clusters
Takashiro Akitsu Eds; Bharat Kumar; Yoshiki Niihori; Wataru Kurashige; Yuichi Negishi, Joint work
InTech's publishing, Aug. 2017
ISBN:9789535133988

Stimuli-Responsive Interface: Fabrication and Application; Chapter 7. Photoresponsive Gold Clusters
Sachil Sharma; Yoshiki Niihori; Wataru Kurashige; Yuichi Negishi; Takeshi Kawai; Mineo Hashizume, Joint work
Springer, Nov. 2016
ISBN:9789811024634

Supra-Materials Nanoarchitectonics; Chapter 1 Nanocluster Science
Sachil Sharma; Wataru Kurashige; Yoshiki Niihori; Yuichi Negishi; Katsuhiko Ariga; Masakazu Aono, Joint work
Elsevier, Oct. 2016
ISBN:9780323378291

Element-Block Materials: New Concept of Organic-Inorganic Hybrid Materials
Yoshiki Niihori; Wataru Kurashige; Yuichi Negishi; Yoshiki Chujo, Joint work
シーエムシー出版, Dec. 2015
ISBN:9784781311364

Protected Metal Clusters: From Fundamental to Applicatiopns; Chapter 3. Controlled Synthesis: Composition and Interface control
Yuichi Negishi; Yoshiki Niihori; Wataru Kurashige; Tatsuya Tsukuda; Hannu; Häkkinen, Joint work
Springer, Sep. 2015
ISBN:9780444635020

3DCGで魅せる研究成果 ― プレゼンに差をつける技法
新堀佳紀
第3回 第2代信州多聞塾, Sep. 2025, Invited

錯形成を駆動力とする金属クラスターの連結
新堀佳紀; 幸坂大河; 根岸雄一
第18回分子科学討論会, Sep. 2024, Not invited

銀-硫黄クラスターの精密合成と物性評価
新堀佳紀; 秋山葵; 根岸雄一
界面科学研究部門夏季シンポジウム, Aug. 2024, Invited

Atomically precise separation of ligand-protected metal clusters
Yoshiki Niihori
An Invited Lecture in VIT-AP University, Oct. 2023, Invited

配位子交換反応に基づいた金属クラスター連結体の創製
新堀佳紀; 幸坂大河; 根岸雄一
第17回分子科学討論会, Sep. 2023, Not invited

Establishment of Precise Separation Methods and Elucidation of Reactivity and Optical Properties for Ligand-Protected Metal Clusters
Yoshiki Niihori
An Invited Lecture in The American College Madurai, Aug. 2023, Invited

（進歩賞受賞講演）配位子保護金属クラスターの高分解能単離法の確立と反応性及び光機能の解明
新堀佳紀
日本化学会103回春季年会, Mar. 2023, Invited

Triplet Sensitizability of Ligand-Protected Metal Clusters
Yoshiki Niihori, Masaaki Mitsui
95th JSCM Anniversary Conference, Oct. 2022, Invited

配位子保護金属クラスターの励起状態の解明と三重項増感剤としての利用
新堀佳紀; 内田惇木; 三井正明
ナノ学会第20回大会, May 2022, Not invited

白金ドープ銀クラスターの光アップコンバージョン特性に対する配位子の影響
新堀佳紀; 内田惇木; 三井正明
第15回分子科学討論会, Sep. 2021, Not invited

チオラート保護銀クラスターを三重項増感剤に用いた近赤外-青色光アップコンバージョン
新堀佳紀; 和田悠幹; 三井正明
ナノ学会第19回大会, May 2021, Not invited

発光解析に基づく配位子保護金属クラスターの平衡状態評価法の確立
新堀佳紀; 高橋直也; 三井正明
第13回分子科学討論会, Sep. 2019, Not invited

発光解析を用いた金属クラスターの平衡状態の評価
新堀佳紀; 高橋直也; 三井正明
2019年光化学討論会, Sep. 2019, Not invited

Determination of Equilibrium Constants in Ligand Binding-Dissociation Reactions of Ag29 Clusters Based on Photoluminescence Analysis
Yoshiki Niihori; Masaaki Mitsui
ICPAC Yangon 2019, Aug. 2019, Invited

Effect of Dynamic Equilibrium of Binding-Dissociation of Ligands on Photoexcited State of Ligand-Protected Ag29 Cluster
Yoshiki Niihori; Masaaki Mitsui
ICPAC Langkawi 2018, Oct. 2018, Invited

Ag29クラスター配位子の結合-解離の動的平衡に基づく光励起状態挙動
新堀佳紀; 高橋直也; 陶山めぐみ; 三井正明
第12回分子科学討論会, Sep. 2018, Not invited

Ag29クラスターの光励起状態に配位子の結合-解離の動的平衡が及ぼす影響
新堀佳紀; 高橋直也; 陶山めぐみ; 三井正明
2018年光化学討論会, Sep. 2018, Not invited

超高分解能分離に基づいた金属クラスターの精密合成とその評価
新堀佳紀
第2回電子スピンサイエンス若手研究会, Jul. 2018, Invited

Ag29クラスターの光誘起電荷移動の速度論的解析
新堀佳紀; 陶山めぐみ; 三井正明
ナノ学会第16回大会, May 2018, Not invited

Precise Separation of Functionalized Thiolate-Protected Metal Clusters
Yoshiki Niihori
International Symposium on Smart Molecules and Materials, Oct. 2017, Not invited

Atomically Precise Synthesis of Thiolate-Protected Metal Clusters Based on High-Resolution Separation
新堀佳紀; 根岸雄一
日本化学会第97回春季年会, Mar. 2017, Not invited

高分解能分離技術に基づいたチオラート保護金属クラスターの超精密合成
新堀佳紀; 根岸雄一
第10回分子科学討論会, Sep. 2016, Not invited

Precise Separation of Thiolate-Protected Alloy Clusters Based on High Resolution Separation with Chromatography
Yoshiki Niihori; Yuichi Negishi
ISSPIC XVIII, Aug. 2016

高速液体クロマトグラフィーを活用したチオラート保護金属クラスターの精密分離
新堀佳紀; 根岸雄一
ナノ学会第14回大会, Jun. 2016, Not invited

配位子交換されたクラスターの位置異性体の高分解能分離と配位子交換反応メカニズムの解明
新堀佳紀; 菊地祥弘; 加藤彩乃; 根岸雄一
第25回日本MRS年次大会, Dec. 2015, Not invited

The Understanding of Ligand Exchange Reaction Mechanism of Thiolate-Protected Metal Clusters by Usage of High-Resolution High-Performance Liquid Chromatography
Yoshiki Niihori; Yuichi Negishi
Pacifichem 2015, Dec. 2015

高速液体クロマトグラフィーを用いたチオラート保護金属クラスターにおける配位子交換反応のメカニズムの解明
新堀佳紀; 菊地祥弘; 加藤彩乃; 根岸雄一
第9回分子科学討論会, Sep. 2015, Not invited

Mechanistic Insights of Ligand Exchange Reaction on Au24Pd(SR)18 by High-Performance Liquid Chromatography
Yoshiki Niihori; Yoshihiro Kikuchi; Ayano Kato; Yuici Negishi
ISMPC15, Jul. 2015, Not invited

高分解能高速液体クロマトグラフィーを駆使したチオラート保護金属クラスターにおける配位子交換反応のメカニズムの解明
新堀佳紀; 松崎未来; 菊地祥弘; 根岸雄一
日本化学会第95春季年会, Mar. 2015

二成分チオラート保護金属クラスターにおける表面組成の精密制御
新堀佳紀; 松崎未来; 内田千紘; 根岸雄一
第24回日本MRS年次大会, Dec. 2014, Not invited

Precise Separation of Metal Clusters Protected by Two-Types of Thiolate Ligands
Yoshiki Niihori; Miku Matsuzaki; Chihiro Uchida; Yuichi Negishi
ISSPIC XVII, Sep. 2014, Not invited

金属クラスターの精密組成制御に基づく高機能ナノ物質の創製
新堀佳紀
第11回東京理科大学特定研究助成金成果報告会, Jun. 2014, Not invited

二成分チオラート保護金属クラスターの精密分離 －高分解能化のキーファクターの解明－
新堀佳紀; 松崎未来; 内田千紘; 根岸雄一
ナノ学会第12回大会, May 2014, Not invited

高速液体クロマトグラフィーを駆使した二成分チオラート保護金属クラスターの精密合成
新堀佳紀; 松崎未来; 内田千紘; 根岸雄一
日本化学会第94春季年会, Mar. 2014, Not invited

高速液体クロマトグラフィーを駆使した二成分チオラート保護金属クラスターの精密分離
新堀佳紀; 松崎未来; 内田千紘; 根岸雄一
CSJ化学フェスタ第3回大会, Oct. 2013, Not invited

配位子交換と逆相カラムの駆使による二種類のチオラートにより保護された金属クラスターの精密かつ系統的な合成法の確立
新堀佳紀; 松崎未来; 根岸雄一
第7回分子科学討論会, Sep. 2013, Not invited

高速液体クロマトグラフィーによる二成分チオラート保護金属クラスターの高分解能分離
新堀佳紀; 根岸雄一
東京理科大学総合科学研究機構界面科学部門スタートアップ会議, Jul. 2013, Not invited

高速液体クロマトグラフィーによる二成分チオラート保護金属クラスターの高分解能分離
新堀佳紀; 松崎未来; 根岸雄一
ナノ学会第11回大会, Jun. 2013, Not invited

チオラート保護金クラスターの配位子交換反応におけるPdドープの効果
新堀佳紀; 藏重亘; 松﨑未来; 根岸雄一
第93回日本化学会春期年会, Mar. 2013, Not invited

Effect of Pd Doping on the Reactivity of Gold 25 Atom Cluster
Yoshiki Niihori; Wataru Kurashige; Yuichi Negishi
Gold 2012, Sep. 2012, Not invited

PVP保護金属二成分クラスターにおける安定組成
新堀佳紀; 根岸雄一
第92回日本化学会春期年会, Mar. 2012, Not invited

アルキル基に保護されたシリコンナノクラスターの質量分析
新堀佳紀; 根岸雄一
ナノ学会第8回大会, May 2010, Not invited

1.5nmの粒径をもつアルキル基保護シリコンクラスターのサイズ選択的合成と化学組成評価
新堀佳紀; 根岸雄一
第19回日本MRS学術シンポジウム, Dec. 2009, Not invited

光物理化学
立教大学理学部

物理化学演習
立教大学理学部

化学ゼミナール
立教大学理学部

化学実験C
立教大学理学部

化学実験B
立教大学理学部

化学実験A
立教大学理学部

基礎化学実験
立教大学理学部

Apr. 2018 - Present
光化学協会

Sep. 2013 - Present
分子科学会

Jun. 2009 - Present
日本化学会

May 2009 - Present
ナノ学会

Dec. 2009 - Oct. 2018
日本MRS

金属ナノクラスターの精密集積による物質創製
2024年度 基盤共同研究, 物質・デバイス領域共同研究拠点, 基盤共同研究
東京理科大学
Apr. 2024 - Mar. 2025

Elucidation of electrocatalytic activity of atomically precise metal clusters for the creation of highly active energy and environmental catalysts
Grants-in-Aid for Scientific Research, Japan Society for the Promotion of Science, Fund for the Promotion of Joint International Research (International Collaborative Research)
Tokyo University of Science
Sep. 2023 - Mar. 2027

Construction of Functional Chemistry SystemUsing Precision Metal Nanoclusters as a Compositional Unit
Grants-in-Aid for Scientific Research, Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (A)
Tokyo University of Science
Apr. 2023 - Mar. 2027

金属クラスターをビルディングブロックとした高次構造体の創製と構造物性の相関解明
科学研究費助成事業, 日本学術振興会, 基盤研究(C)
東京理科大学
Apr. 2022 - Mar. 2025

平衡を考慮した配位子保護金属クラスターの発光特性の解明
科学研究費助成事業, 若手研究
Apr. 2020 - Mar. 2022

金属クラスターを母体とした単一光アップコンバーター分子の創生とその評価
立教大学学術推進特別重点資金, 立教大学
立教大学
Jun. 2019 - Mar. 2020

Construction of Near-Infrared Photon-Upconversion Material by Metal Cluster-Dye Interlinked System
基礎科学研究助成, The Sumitomo Foundation
Rikkyo University
Nov. 2017 - Nov. 2018

High-resolution separation of thiolate-protected gold clusters by reversed-phase high-performance liquid chromatography
Grants-in-Aid for Scientific Research, Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (B)
Tokyo University of Science
Apr. 2016 - Mar. 2019

合金クラスターの超高分解能分離の実現と精密評価
科学研究費助成事業, 日本学術振興会, 若手研究(B)
Apr. 2016 - Mar. 2018

原子精度精密合成技術を駆使した高活性白金触媒ナノクラスターの創製
東京工業大学基金, 東京工業大学
東京理科大学
Apr. 2015 - Mar. 2016

チオラート保護合金クラスターにおける高分解能分離技術の開発
笹川科学研究助成, 日本科学協会
東京理科大学
Apr. 2015 - Feb. 2016

出張科学実験ショー Part 2
新堀佳紀, 13 Oct. 2023 - 13 Oct. 2023

出張科学実験ショー Part 1
新堀佳紀, 23 Apr. 2023 - 23 Apr. 2023

JSTさくらサイエンスプログラム
organizing_member
立教大学, 10 May 2018 - 10 May 2018

2024年度ナノ物理化学セミナー開催
Planning etc
田中秀樹, 28 Jun. 2024 - 28 Jun. 2024

ACS on Campus
Planning etc
Yuichi Negishi, 09 May 2023 - 09 May 2023

Multidisciplinary Digital Publishing Institute 学術論文査読業務
Review
Multidisciplinary Digital Publishing Institute, Apr. 2020 - Present

American Chemical Society 学術論文査読業務
Peer review
American Chemical Society, Apr. 2020 - Present

Royal Society of Chemistry 学術論文査読業務
Peer review
Royal Society of Chemistry, Apr. 2020 - Present

International Symposium on Monolayer Protected Clusters 2015
Planning etc
Tatsuya Tsukuda, Yuichi Negishi, 13 Jul. 2015 - 16 Jul. 2015