Updated on 2025/10/23

写真a

 
USUBA Junichi
 
Organization
Institutes of Innovation for Future Society Research Center for Net Zero Carbon Society Designated Assistant Professor
Title
Designated Assistant Professor

Degree 1

  1. Ph.D. (Science) ( 2022.3   Nagoya University ) 

Research Areas 3

  1. Nanotechnology/Materials / Synthetic organic chemistry

  2. Nanotechnology/Materials / Structural/physical organic chemistry

  3. Nanotechnology/Materials / Inorganic and coordination chemistry

Research History 5

  1. 名古屋大学 未来社会創造機構 脱炭素社会創造センター 特任助教

    2024.6

  2. Brandeis University 博士研究員

    2022.10 - 2024.5

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    Country:United States

  3. 京都大学高等研究院物質-細胞統合システム拠点(iCeMS)特定研究員

    2021.10 - 2022.9

  4. 株式会社クレハ

    2021.4 - 2021.9

  5. 名古屋大学, 大学院理学研究科, 日本学術振興会 特別研究員(DC2)

    2019.4 - 2021.3

Education 2

  1. Nagoya University   Graduate School of Science

    2018.4 - 2021.3

  2. Nagoya University   Graduate School of Science

    2016.4 - 2018.3

 

Papers 16

  1. Bambusuril Small-Molecule Ionic Isolation Lattices for Exciton Coupled Dimers and Dicationic Fluorophores

    Andrew H. Olsson, Vikrant Tripathy, Nobuyuki Yamamoto, Junichi Usuba, Jeno S. Leavitt, Elizabeth A. Kambas, Katherine L. VanDenburgh, Krishnan Raghavachari, Grace G. D. Han, Bo W. Laursen, Amar H. Flood

    Journal of the American Chemical Society   Vol. 147 ( 41 ) page: 37372 - 37384   2025.10

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1021/jacs.5c11141

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  2. A Durable Metal–Organic Framework with a Hydrophobic sp3-Carbon-Rich Nanospace Constructed from Flexible Medium-Sized Ring Ligands

    Junichi Usuba, Yhu Hijikata, Teppei Takahara, Shinpei Kusaka, Ryotaro Matsuda

        2025.9

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  3. Curved anthracenes for visible-light photon energy storage via Dewar isomerization

    Subhayan Chakraborty, Writam S.R. Choudhuri, Junichi Usuba, Qianfeng Qiu, Cijil Raju, Grace G. D. Han

    Chem     2025.7

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.chempr.2025.102660

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  4. On‐Demand Sintering of Gold Nanoparticles via Controlled Removal of o‐Nitrobenzyl Thiol Ligands Under Record‐Low Power for Conductive Patterns

    Jisun Im, Charles Heaton, Nur R. E. Putri, Changxu Liu, Junichi Usuba, Kevin Butler, Michael Fay, Grace G. D. Han, Helia Hooshmand, Adam Thompson, Ricky Wildman, Richard Hague, Lyudmila Turyanska, Christopher Tuck

    Advanced Science   Vol. 12 ( 12 ) page: e2415496   2025.3

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1002/advs.202415496

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  5. Synthesis of fully fused tetrapyrazinoporphyrazine polymers bearing three-dimensional structures controlled by steric repulsion

    Kosuke Watanabe, Teruki Toya, Yuto Toyota, Yoichi Kobayashi, Junichi Usuba, Yuh Hijikata, Ryotaro Matsuda, Katsuyuki Nishimura, Haruki Sugiyama, Yasutomo Segawa

    Chemical Communications   Vol. 61 ( 13 ) page: 2822 - 2825   2025.2

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    Language:English   Publishing type:Research paper (scientific journal)  

    <jats:p>The synthesis and characterization of fused aromatic networks composed of zinc tetrapyrazinoporphyrazines are reported. The steric repulsion of bulky substituents induced the formation of three-dimensional structures. Thus-obtained insoluble polymers adsorbed...</jats:p>

    DOI: 10.1039/d4cc06293k

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  6. Adsorptive-dissolution of O2 into the potential nanospace of a densely fluorinated metal-organic framework

    Shinpei Kusaka, Yuh Itoh, Akihiro Hori, Junichi Usuba, Jenny Pirillo, Yuh Hijikata, Yunsheng Ma, Ryotaro Matsuda

    Nature Communications   Vol. 15 ( 1 ) page: 10117   2024.11

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1038/s41467-024-54391-y

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  7. Cell-Free Nonequilibrium Assembly for Hierarchical Protein/Peptide Nanopillars

    Jiaqi Guo, Ayisha Zia, Qianfeng Qiu, Michael Norton, Kangqiang Qiu, Junichi Usuba, Zhiyu Liu, Meihui Yi, Shane T. Rich-New, Michael Hagan, Seth Fraden, Grace D. Han, Jiajie Diao, Fengbin Wang, Bing Xu

    Journal of the American Chemical Society     2024.9

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1021/jacs.4c06775

  8. Self-activated energy release cascade from anthracene-based solid-state molecular solar thermal energy storage systems

    Subhayan Chakraborty, Han P.Q. Nguyen, Junichi Usuba, Ji Yong Choi, Zhenhuan Sun, Cijil Raju, Gustavo Sigelmann, Qianfeng Qiu, Sungwon Cho, Stephanie M. Tenney, Katherine E. Shulenberger, Klaus Schmidt-Rohr, Jihye Park, Grace G.D. Han

    Chem     2024.7

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.chempr.2024.06.033

  9. Mechanoactivated amorphization and photopolymerization of styryldipyryliums

    Junichi Usuba, Zhenhuan Sun, Han P. Q. Nguyen, Cijil Raju, Klaus Schmidt-Rohr, Grace G. D. Han

    Communications Materials     2024.6

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    Language:English   Publishing type:Research paper (scientific journal)  

    <jats:title>Abstract</jats:title><jats:p>Conventional topochemical photopolymerization reactions occur exclusively in precisely-engineered photoactive crystalline states, which often produces high-insoluble polymers. To mitigate this, here, we report the mechanoactivation of photostable styryldipyrylium-based monomers, which results in their amorphization-enabled solid-state photopolymerization and produces soluble and processable amorphous polymers. A combination of solid-state nuclear magnetic resonance, X-ray diffraction, and absorption/fluorescence spectroscopy reveals the crucial role of a mechanically-disordered monomer phase in yielding polymers via photo-induced [2 + 2] cycloaddition reaction. Hence, mechanoactivation and amorphization can expand the scope of topochemical polymerization conditions to open up opportunities for generating polymers that are otherwise difficult to synthesize and analyze.</jats:p>

    DOI: 10.1038/s43246-024-00539-8

  10. Photoinduced Solid–Liquid Phase Transition and Energy Storage Enabled by the Design of Linked Double Photoswitches

    Alejandra Gonzalez, Qianfeng Qiu, Junichi Usuba, Joshua Wan, Grace G. D. Han

    ACS Materials Au     2024.1

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1021/acsmaterialsau.3c00069

  11. Solid-state photon energy storage via reversible [2+2] cycloaddition of donor-acceptor styrylpyrylium system

    Sungwon Cho, Junichi Usuba, Subhayan Chakraborty, Xiang Li, Grace G.D. Han

    Chem     2023.7

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Elsevier {BV}  

    DOI: 10.1016/j.chempr.2023.06.007

  12. Photoswitch designs for molecular solar thermal energy storage

    Junichi Usuba, Grace G.D. Han

    Trends in Chemistry     2023.1

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Elsevier {BV}  

    DOI: 10.1016/j.trechm.2022.12.010

  13. Visible light activated energy storage in solid-state Azo-BF<sub>2</sub> switches

    Qianfeng Qiu, Qingkai Qi, Junichi Usuba, Karina Lee, Ivan Aprahamian, Grace G. D. Han

    Chemical Science     2023

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    Language:English   Publishing type:Research paper (scientific journal)  

    <jats:p>Visible-light-absorbing photoswitches based on the Azo-BF<jats:sub>2</jats:sub> scaffold show reversible isomerization in the solid state, storing photon energy and releasing thermal energy on demand.</jats:p>

    DOI: 10.1039/d3sc03465h

  14. Thiophene‐Fused 1,4‐Diazapentalene: A Stable C=N‐Containing π‐Conjugated System with Restored Antiaromaticity

    Junichi Usuba, Aiko Fukazawa

    Chemistry – A European Journal   Vol. 27 ( 65 ) page: 16127 - 16134   2021.11

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1002/chem.202103122

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  15. Dithieno[a,e]pentalenes: Highly Antiaromatic Yet Stable π‐Electron Systems without Bulky Substituents Open Access

    Junichi Usuba

    Chemistry – A European Journal   Vol. 27 ( 5 ) page: 1482   2021.1

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1002/chem.202004897

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  16. Synthesis of seminaphtho-phospha-fluorescein dyes based on the consecutive arylation of aryldichlorophosphines

    Junichi Usuba

      Vol. 53 ( 61 ) page: 8565 - 8568   2017.8

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1039/c7cc04323f

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Presentations 1

  1. 柔軟な中員環配位子を組み込んだMOFの構造と物性

    薄葉純一

    第35回基礎有機化学討論会  2025.9.9  基礎有機化学会

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    Event date: 2025.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:名古屋⼤学 東⼭キャンパス   Country:Japan  

KAKENHI (Grants-in-Aid for Scientific Research) 2

  1. 柔軟性MOFの多様化に向けた中員環配位子の開発

    Grant number:25K18049  2025.4 - 2027.3

    日本学術振興会  科学研究費助成事業  若手研究

    薄葉 純一

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    Authorship:Principal investigator 

    Grant amount:\4810000 ( Direct Cost: \3700000 、 Indirect Cost:\1110000 )

    水素の貯蔵や二酸化炭素の捕集といったガス貯蔵・分離が可能な金属-有機構造体 (MOF) は持続可能な社会を実現するための最重要な材料である。その中でも特に、柔軟性 MOF は特異なガス選択性、狭い圧力範囲での急激な吸着といった魅力的な性質を有している。本研究課題では有機配位子の柔らかさを活かした柔軟性 MOF の開発とその設計指針の確立を目指す。この目的のために、飽和結合によって分子内架橋された中員環配位子、ジベンゾシクロオクタン、およびその類縁体を組み込んだ MOF の創出とその物性解明に取り組む。

  2. 反芳香族化合物の分子間相互作用の解明と機能開拓

    Grant number:19J15561  2019.4 - 2021.3

    日本学術振興会  科学研究費助成事業  特別研究員奨励費

    薄葉 純一

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    Authorship:Principal investigator 

    Grant amount:\2300000 ( Direct Cost: \2300000 )

    本研究課題は反芳香族化合物どうしの強い分子間相互作用の実現を通して,従来のπ 電子系では達成できない優れた機能性材料を創出することを目的に設定している.採用時までに,チオフェン縮環型ペンタレン (DTP) がかさ高い置換基を用いることなく反芳香族性と安定性を両立である骨格であることを見出した.また,令和元年度には,DTPの骨格内のC=C結合の一部をC=N結合に置き換えたチオフェン縮環型ジアザペンタレン (TAP) の合成に成功し,TAPがイミンの導入に伴う特徴的な反応性や物性をもつだけでなく結晶中で密な積層構造を有することを見出した.これらの結果は,反芳香族化合物を光・電子機能性材料へと活用する上でのボトルネックであった「安定性の担保」と「強い分子間相互作用の実現」を乗り越えた重要な成果と位置付けられる.今年度は,過年度までの知見を真に優れた電子機能性材料へ結び付けるための試みとして,TAPへの構造修飾が結晶のパッキング構造に与える影響を検証した.その結果,非対称な π 共役の拡張によって,これまでこの分子系では見られなかった非カラム状のSlipped π stacking型や,分子のオーバーラップの大きいCofacial型といった特徴的な積層構造を形成することを見出し,積層構造の制御に関する貴重な知見を得ることに成功している.期間内では,キャリア移動度の計測や実デバイスでの物性評価を行うまでには至らなかったが,DTPでは困難であった大量合成法の確立や反応性の解明という観点で多くの重要な知見を得ており,反芳香族化合物を基盤とする機能性材料の創製に対して確固たる道筋をつけたと評価できる.