Basic Information

Email Address

• Email Address

  ochi.junki.5ckyoto-u.ac.jp

Academic Degree

• 23 Mar. 2020

  京都大学修士（工学）
• 23 Jan. 2023

  京都大学博士（工学）

Academic Resume (Undergraduate School/Majors)

• 京都大学, 工学部工業化学科, 卒業

ID,URL

• ORCID ID

  0000-0003-4275-3898

• J-Global ID

  202301016384240226

• Researcher ID

  KEH-4262-2024

• Researcher number

  30978789

researchmap URL

• https://researchmap.jp/ochi_junki

Research

Papers

• Chlorine‐Enabled Double Borylation Strategy for π‐Extended MR‐TADF Emitters: From Synthetic Challenge to Benchmark OLEDs

  Kojiro Tanaka; Junki Ochi; Jiping Hao; Yasuhiro Kondo; Masakazu Kondo; Takuji Hatakeyama

  Angewandte Chemie International Edition, 23 Nov. 2025, Peer-reviewed

  
• Late‐Stage C─N Bond Cleavage Enables Diversification of Multiple Resonance Materials

  Masashi Mamada; Masaru Horiuchi; Jiping Hao; Nanami Matsuno; Kojiro Tanaka; Kenkera Rayappa Naveen; Masahiro Hayakawa; Junki Ochi; Susumu Oda; Yasuhiro Kondo; Takuji Hatakeyama

  Angewandte Chemie International Edition, 09 Jun. 2025, Peer-reviewed

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• Recent progresses in the mechanistic studies of aggregation-induced emission-active boron complexes and clusters

  Kazuo Tanaka; Masayuki Gon; Shunichiro Ito; Junki Ochi; Yoshiki Chujo

  Coordination Chemistry Reviews, Dec. 2022, Peer-reviewed

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• Controlling the Dual‐Emission Character of Aryl‐Modified o‐Carboranes by Intramolecular CH⋅⋅⋅O Interaction Sites

  Junki Ochi; Kazuhiro Yuhara; Kazuo Tanaka; Yoshiki Chujo

  Chemistry – A European Journal, 08 Mar. 2022, Peer-reviewed, Lead author

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• Late-stage direct double borylation of B/N-based multi-resonance framework enables high-performance ultra-narrowband deep-blue organic light-emitting diodes

  Jiping Hao; Junki Ochi; Kojiro Tanaka; Masashi Mamada; Kenkera Rayappa Naveen; Yasuhiro Kondo; Masakazu Kondo; Takuji Hatakeyama

  Nature Communications, 06 Oct. 2025, Peer-reviewed

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• Improving the TADF properties of deep-blue multiple-resonance emitters by strategic oxygen–sulfur replacement

  Junki Ochi; Yuki Yamasaki; Susumu Oda; Masakazu Kondo; Yasuhiro Kondo; Masahiro Hayakawa; Takuji Hatakeyama

  Materials Horizons, 2025, Peer-reviewed, Lead author

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• Approaching National Television System Committee Blue Gamut Through Asymmetric Modification of MR‐TADF Material

  Junki Ochi; Yuki Yamasaki; Susumu Oda; Masakazu Kondo; Atsuhiro Ikeno; Yasuhiro Kondo; Takuji Hatakeyama

  Advanced Optical Materials, Aug. 2025, Peer-reviewed, Lead author

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• Design for a Solid‐State Luminescent Sensor Through Photo‐Induced Electron Transfer Based on Pyrene‐Modified o‐Carborane

  Shunsuke Nishiyama; Junki Ochi; Kazuo Tanaka

  Asian Journal of Organic Chemistry, 22 Nov. 2024, Peer-reviewed

  
• Efficient Deep-Blue Multiple-Resonance Emitters Based on Azepine-Decorated ν-DABNA for CIEy below 0.06.

  Masashi Mamada; Akio Aoyama; Ryota Uchida; Junki Ochi; Susumu Oda; Yasuhiro Kondo; Masakazu Kondo; Takuji Hatakeyama

  Advanced materials (Deerfield Beach, Fla.), 02 May 2024, Peer-reviewed

  
• Highly efficient multi-resonance thermally activated delayed fluorescence material toward a BT.2020 deep-blue emitter

  Junki Ochi; Yuki Yamasaki; Kojiro Tanaka; Yasuhiro Kondo; Kohei Isayama; Susumu Oda; Masakazu Kondo; Takuji Hatakeyama

  Nature Communications, 02 Apr. 2024, Peer-reviewed, Lead author

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• Synthesis, cation exchange, and optical properties of pyrene-based chromophores containing [CB9H9]− and [CB11H11]− cluster units

  Junki Ochi; Takumi Yanagihara; Kazuo Tanaka; Yoshiki Chujo

  Bulletin of the Chemical Society of Japan, 11 Jan. 2024, Peer-reviewed, Lead author

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• Organoboron-based multiple-resonance emitters: synthesis, structure–property correlations, and prospects

  Masashi Mamada; Masahiro Hayakawa; Junki Ochi; Takuji Hatakeyama

  Chemical Society Reviews, 2024, Peer-reviewed

  
• Tuning of the height of energy barrier between locally-excited and charge transfer states by altering the fusing position of o-carborane in phenylnaphthalene

  Junki Ochi; Takumi Yanagihara; Kazuo Tanaka; Yoshiki Chujo

  Physical Chemistry Chemical Physics, Apr. 2023, Peer-reviewed, Lead author

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• Investigation of the Substitution Site Effect on o-Carborane-Based Chromophores by Anthracene Introduction at the B(3) Position

  Junki Ochi; Kazuo Tanaka; Yoshiki Chujo

  Bulletin of the Chemical Society of Japan, 15 Feb. 2023, Peer-reviewed, Lead author

  
• Alternately π‐Stacked Systems Assisted by o‐Carborane: Dual Excimer Emission and Color Modulation by B_cage‐Methylation

  Junki Ochi; Kazuo Tanaka; Yoshiki Chujo

  Angewandte Chemie International Edition, 27 Nov. 2022, Peer-reviewed, Lead author

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• Switching between intramolecular charge transfer and excimer emissions in solids based on aryl-modified ethynyl‒o-carboranes

  Hideki Yamamoto; Junki Ochi; Kazuhiro Yuhara; Kazuo Tanaka; Yoshiki Chujo

  Cell Reports Physical Science, Feb. 2022, Peer-reviewed

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• Rational design for thermochromic luminescence in amorphous polystyrene films with bis‐ o ‐carborane‐substituted enhanced conjugated molecule having aggregation‐induced luminochromism

  Keisuke Wada; Kazushi Hashimoto; Junki Ochi; Kazuo Tanaka; Yoshiki Chujo

  Aggregate, Oct. 2021, Peer-reviewed

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• Dimerization-Induced Solid-State Excimer Emission Showing Consecutive Thermochromic Luminescence Based on Acridine-Modified o-Carboranes

  Junki Ochi; Kazuo Tanaka; Yoshiki Chujo

  Inorganic Chemistry, 21 Jun. 2021, Peer-reviewed, Lead author

  
• Experimental proof for emission annihilation through bond elongation at the carbon–carbon bond in o-carborane with fused biphenyl-substituted compounds

  Junki Ochi; Kazuo Tanaka; Yoshiki Chujo

  Dalton Transactions, 2021, Peer-reviewed, Lead author

  
• Recent Progress in the Development of Solid‐State Luminescent o ‐Carboranes with Stimuli Responsivity

  Junki Ochi; Kazuo Tanaka; Yoshiki Chujo

  Angewandte Chemie International Edition, 15 Jun. 2020, Peer-reviewed, Lead author

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• Tuning the NIR Absorption Properties of 1,3,4,6,9b-Pentaazaphenalene Derivatives Through the Spatially Separated Frontier Molecular Orbitals

  Hiroyuki Watanabe; Junki Ochi; Kazuo Tanaka; Yoshiki Chujo

  European Journal of Organic Chemistry, 21 Feb. 2020, Peer-reviewed

  
• Improvement of Solid-State Excimer Emission of the Aryl-Ethynyl-o -Carborane Skeleton by Acridine Introduction

  Junki Ochi; Kazuo Tanaka; Yoshiki Chujo

  European Journal of Organic Chemistry, 26 May 2019, Peer-reviewed, Lead author

  
• Time‐Dependent Emission Enhancement of the Ethynylpyrene‐ o ‐Carborane Dyad and Its Application as a Luminescent Color Sensor for Evaluating Water Contents in Organic Solvents

  Kenta Nishino; Hideki Yamamoto; Junki Ochi; Kazuo Tanaka; Yoshiki Chujo

  Chemistry – An Asian Journal, 02 May 2019, Peer-reviewed

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Awards

• 04 Oct. 2022

  2022年度光化学討論会優秀学生発表賞（ポスター）（光化学協会）
• 11 Oct. 2021

  第70回高分子討論会優秀ポスター賞（公益社団法人高分子学会）
• 08 Jul. 2022

  京都大学工学研究科令和4年度吉田研究奨励賞

External funds: Kakenhi

• Development of highly sensitive sensing materials utilizing sharp emission

  Grant-in-Aid for Research Activity Start-up

  0501:Physical chemistry, functional solid state chemistry, organic chemistry, polymers, organic materials, biomolecular chemistry, and related fields

  Kyoto University

  Junki Ochi

  From 31 Aug. 2023, To 31 Mar. 2025, Project Closed

  発光;センシング;ホウ素;フッ素;多重共鳴効果;長波長シフト;センシング材料

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23K19245/
• アセン等価体の合成を志向した分子内連続的ホウ素化反応の開発

  Grant-in-Aid for Early-Career Scientists

  Basic Section 33010:Structural organic chemistry and physical organic chemistry-related

  Kyoto University

  越智 純毅

  From 01 Apr. 2025, To 31 Mar. 2027, Granted

  π共役系分子;ホウ素;光学特性

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-25K18020/