Updated on 2025/10/24

写真a

 
QU Liyuan
 
Organization
Graduate School of Engineering Materials Chemistry 2 Designated Assistant Professor
Title
Designated Assistant Professor

Degree 1

  1. 博士(理学) ( 2019.9   東北大学 ) 

Research Interests 1

  1. porous coordination polymer; metal-organic framework; electrical conductivity

Research Areas 1

  1. Nanotechnology/Materials / Inorganic and coordination chemistry

Current Research Project and SDGs 1

  1. 堅牢な骨格を有する多孔性分子導体の構造及び物性制御法の開発

Awards 2

  1. EurJIC Best Poster Award

    2025.9   EuroMOF2025-Young Scietist Symposium   Modulating Intrinsic Charge Mobility by Tuning π−π Interaction Distances in Three Isostructural Porous Molecular Conductors

    Liyuan QU

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    Award type:Award from international society, conference, symposium, etc.  Country:Greece

  2. IKM Poster Prize

    2019.10   INSTITUT KIMIA MALAYSIA   Electrical Conductivity and Redox Activity in A Hexagonal Porous Molecular Conductor

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    Award type:Award from international society, conference, symposium, etc.  Country:Malaysia

 

Papers 5

  1. Uncommon quadruple stacking topology in a honeycomb-sheet MOF compatible with through-space conduction Open Access

    Tanabe, T; Qu, LY; Ueno, K; Takaishi, S; Yamashita, M; Hijikata, Y; Matsuda, R; Sakamoto, R; Iguchi, H

    CHEMICAL COMMUNICATIONS   Vol. 61 ( 52 ) page: 9500 - 9503   2025.6

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    Language:English   Publisher:Chemical Communications  

    Quadruple stacking topology with an unusual threefold stacking periodicity in four honeycomb sheets was realized in a flexible wavy honeycomb-sheet MOF (PMC-20). The infinite π-stacked arrays, formed exclusively at the π-conjugated core of the linker site, contribute to the highest electrical conductivity among the reported naphthalenediimide (NDI)-based crystals.

    DOI: 10.1039/d5cc00084j

    Open Access

    Web of Science

    Scopus

    PubMed

  2. Diruthenium(II,II) Complex Assemblies Showing Electrical Conduction via π-Stacked 2-Pyrenecarboxylate Moiety

    Takaki, R; Iguchi, H; Qu, LY; Pirillo, J; Kusaka, S; Hijikata, Y; Tanaka, H; Matsuda, W; Seki, S; Matsuda, R

    CHEMISTRY-AN ASIAN JOURNAL   Vol. 20 ( 6 ) page: e202401599   2025.3

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    Language:English   Publisher:Chemistry an Asian Journal  

    Through-space electrical conduction in paddlewheel-type homovalent dinuclear complexes remains poorly understood, despite the numerous reports on these complexes. Herein, the electrical conduction of new Ru<inf>2</inf>(II,II) complexes with 2-pyrenecarboxylate (pyrCOO<sup>−</sup>) ligands, [Ru<inf>2</inf>(pyrCOO)<inf>4</inf>X<inf>2</inf>] ⋅ n(X) (where X=DMF (Ru-DMF), NMP (Ru-NMP), DMA (Ru-DMA)), was investigated. The dimensionality of π-stacking interactions between discrete molecules in Ru-DMA is higher (two-dimensional) than in Ru-DMF and Ru-NMP (stair-like one-dimensional). Nevertheless, Ru-DMF, which contains a slight amount of organic radicals, exhibited the highest electrical conductivity. This suggests that the large overlap and high dimensionality of π-stacking interactions among the complexes, along with a slight organic radical impurity, contribute to the increased electrical conductivity.

    DOI: 10.1002/asia.202401599

    Web of Science

    Scopus

    PubMed

  3. Naphthalene Diimide-Based Hydrogen-Bonded Organic Framework for High Electrical Conductivity and Ammonia Sensor Applications

    Imaoka, K; Kim, HS; Yamamoto, Y; Fukutomi, S; Chamoreau, LM; Qu, LY; Iguchi, H; Tsuchiya, Y; Ono, T; Mathevet, F; Adachi, C

    ADVANCED FUNCTIONAL MATERIALS   Vol. 34 ( 49 )   2024.12

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    Publisher:Advanced Functional Materials  

    While metal-organic frameworks (MOFs) and covalent organic frameworks (COFs) have been widely investigated as porous conductive materials, the research on the electrical properties of HOF materials has been limited. Moreover, the electrical conductivity of HOF materials is typically several orders of magnitude lower than that of MOFs and COFs. In this work, a HOF material based on naphthalene diimide is designed and achieved a remarkable electrical conductivity of 2.9 × 10<sup>−2</sup> S cm<sup>−1</sup> after hydrazine doping, which represents the highest value reported in the HOF system to date. In addition, this material exhibits a reversible change of its electrical conductivity under exposure to ammonia which is promising for gas-sensor applications. The demonstration reveals a new dimension of HOFs as conductive materials and opens up possibilities for new HOF-based devices.

    DOI: 10.1002/adfm.202409299

    Web of Science

    Scopus

  4. Porous Molecular Conductor: Electrochemical Fabrication of Through-Space Conduction Pathways among Linear Coordination Polymers Reviewed

    Liyuan Qu, Hiroaki Iguchi, Shinya Takaishi, Faiza Habib, Chanel F. Leong, Deanna M. D’Alessandro, Takefumi Yoshida, Hitoshi Abe, Eiji Nishibori, and Masahiro Yamashita

    Journal of the American Chemical Society     2019.4

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    Authorship:Lead author   Language:English  

    DOI: doi.org/10.1021/jacs.9b01717

  5. Effect of the structural evolution on the ionic conductivity of Li-N-H system during the dehydrogenation Invited Reviewed

    Biswajit Paik; Motoaki Matsuo; Toyoto Sato; Liyuan Qu; Anna Roza Wolczyk; Shin-ichi Orimo

    Applied Physics Letters     2016.5

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    Language:English  

    DOI: doi.org/10.1063/1.4952601

Presentations 6

  1. Modulating π-Stacking Geometries in Three Isostructural Porous Molecular Conductors International conference

    Liyuan Qu, Ueno Kenta, Chanel F. Leong, Deanna M. D’Alessandro, Wakana Matsuda, Shu Seki, Masahiro Yamashita, Hiroaki Iguchi and Ryotaro Matsuda

    The 16th International Symposium on Crystalline Organic Metals, Superconductors and Magnets  2025.9.29 

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    Event date: 2025.9 - 2025.10

    Language:English   Presentation type:Poster presentation  

    Venue:Toyohashi   Country:Japan  

  2. Modulating Intrinsic Charge Mobility by Tuning π−π Interaction Distances in Three Isostructural Porous Molecular Conductors International conference

    Liyuan Qu, Ueno Kenta, Chanel F. Leong, Deanna M. D’Alessandro, Wakana Matsuda, Shu Seki, Masahiro Yamashita, Hiroaki Iguchi and Ryotaro Matsuda

    EuroMOF2025  2025.9.23 

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    Event date: 2025.9

    Language:English   Presentation type:Poster presentation  

    Venue:Crete   Country:Greece  

  3. Tuning Electrical Conductivity in One-Dimensional Porous Molecular Conductors International conference

    Liyuan QU

    EuroMOF2025 Young Scientist Symposium  2025.9.20 

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    Event date: 2025.9

    Language:English   Presentation type:Poster presentation  

    Venue:Crete   Country:Greece  

  4. Tuning Charge Transport Properties via Structural Modulation in Three Isostructural Porous Coordination Polymers

    Liyuan Qu, Ueno Kenta, Chanel F. Leong, Deanna M. D’Alessandro, Wakana Matsuda, Shu Seki, Masahiro Yamashita, Hiroaki Iguchi and Ryotaro Matsuda

    The 75th Conference of Japan Society of Coordination Chemistry  2025.9.17 

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    Event date: 2025.9

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Nagasaki   Country:Japan  

  5. Charge Order in a Naphthalenediimide-Based Porous Molecular Conductor International conference

    Liyuan QU

    The 9th Asian Conference on Coordination Chemistry  2024.2.19 

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    Event date: 2024.2

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Bangkok   Country:Thailand  

  6. Porous Molecular Conductors Assembled by Electrochemical Reduction of Naphthalenediimide-Based Ligands Invited

    Liyuan Qu

    The 2nd Kyoto Advanced Porous Science Symposium  2023.8.10 

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    Event date: 2023.8

    Language:English   Presentation type:Oral presentation (invited, special)  

    Venue:Kyoto University   Country:Japan  

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

  1. 堅牢な骨格を有する多孔性分子導体の構造及び物性制御法の開発

    Grant number:23K13718  2023.4 - 2026.3

    日本学術振興会  科学研究費助成事業  若手研究

    瞿 李元

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    本研究では、多孔性配位高分子(MOF) と分子性導体の両者の特長を併せ持つ多孔性分子導体(PMC) における構造及び物性制御法の開発を行っている。本年度には、二つ課題において、(①PMCの次元性の制御及び堅牢な骨格を有するPMCの合成;②分子吸脱着によるPMCの電子状態の制御及び機能性の評価)、主に課題①を取り込んできた。
    課題①について、新規PMCの合成を進めるにあたり、酸化還元活性を有するナフタレンジイミド(NDI) 骨格に着目した。NDI配位子及び電解還元手法を用いて、四種類の新規PMCの合成に成功した。その中、比較対象として柱状配位子なしの一次元構造を持つPMC-3が一つ、および目標PMCの柱状配位子硫酸イオンありの二次元及び三次元構造を持つPMC-4が三つある。PMC-3は次元性が低いため、加熱や溶媒交換などの方法で脱溶媒により構造が維持できなく、その一方で、PMC-4は高次元構造を持つため、脱溶媒後に構造は比較的に安定であることが分かった。その三つのPMC-4において、合成条件を微小的に調整することで、次元性及び周期性が変わり、かつ狙った形態の相の単離ができる。また、何れのPMCについても、NDIラジカル及び狙ったπ積層カラムが存在しており、導電率は10^-3 S/cmの高い値に到達した。
    これら高次元PMCの合成の成功することは、柱状配位子硫酸イオンの導入が有効であることを示唆した。また、このような高い導電率並びに安定な構造は、これからの連続的かつ可逆的な電子状態の制御にとても有望である。

  2. セキュアでユビキタスな資源・エネルギー共創拠点

    2022 - 2031

    科学技術振興機構  産学が連携した研究開発成果の展開 研究成果展開事業 共創の場形成支援 共創の場形成支援プログラム(COI-NEXT) 共創分野(本格型) 

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    日本は生活基盤となるエネルギーや資源の大半を国外に依存する不安定な社会構造の上に成り立っています。最近になり、パンデミック、戦争、 自然災害等の脅威が頻発し、資源・エネルギーを国外に依存する日本の問題が、現実の生活を脅かす身近な問題として現れ、この問題を国民全 員で考える機運が高まっているといえます。本拠点では、国民全員が資源・エネルギーの生産に参加し、容易にエネルギーや資源を手に入れられ るシステムを作り上げることで、一人ひとりが安心してくらせる社会の実現を目指します。