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Original paper (2026)
  1. Topological Isomerism between 2D and 3D Hydrogen-bonded Networks Using Conformationally Flexible Tetracarboxylic Acids
    Haruka Tsuji,* Ryusei Oketani, Ichiro Hisaki*
    (Cryst. Growth Des. 2026, accepted)
    2026CGD-1.jpg
  2. Can Entropically Unfavorable Topological Hydrogen-Bonded Networks Form from Tetrakis- or Pentakis(4-carboxyphenyl)benzene Derivative?
    Rento Maeda, Ryusei Oketani, Kazuki Shiga, Norimitsu Tohnai, Ichiro Hisaki*
    (Small 2026 published on web) DOI: 10.1002/smll.73250
    2026Small-1.png
  3. Chirality Amplification Step of Temperature Cycle-Induced Deracemization
    Ryusei Oketani,* Riku Naito, Ichiro Hisaki*
    (Chem. Commun. 2026, 62, 1268-1271.) DOI: 10.1039/D5CC04955E
    2026CC-1.png
  4. Pressure-Triggered Simultaneous Amplification of Aggregation and Fluorescence in a Chromophoric Soft Tripod
    Tomoyuki, Hamachi, Iori Okamura, Yuto Ohmura, Ichiro Hisaki,* Gaku Fukuhara*
    (Chem. Commun. 2026, 62, 1149-1152.) DOI: 10.1039/D5CC05838D
  5. A Hydrogen-Bonded Organic Framework Possessing One-Dimensional Wide Channels Surrounded by Naphthalenediimide Plane
    Yuzuki Murata, Taito Hashimoto, Ryusei Oketani, Miki Naruoka, Rajendra Prasad Paitandi,
    Norimitsu Tohnai, Shu Seki, Ichiro Hisaki*
    (Chem. Sci. 2026, 17, 2811-2817.) DOI: 10.1039/D5SC07488F
    2026CS.png
Original paper (2025)
  1. Hexaphenyl-1,4,5,6,7,10,11,12,13,16,17,18-dodecaazatrinaphthylene
    Kaito Nakamura†, Kodai Shimizu†, Ryusei Oketani, Haruka Tokuyama, Takashi Harimoto, Rajendra Prasad Paitandi, Yusuke Ishigaki, Akihito Konishi, Shu Seki, Makoto Yasuda, Ichiro Hisaki*
    (Mater. Chem. Front. 2025, 9, 3589-3599.) DOI: 10.1039/D5QM00649J
    2025MCF.png
  2. [3]CycloBODIPY: A Highly Strained Cyclic BODIPY Trimer with Effective Macrocyclic Conjugation
    Masaki Sugino, Yoshitaka Tsuchido, Rento Maeda, Ichiro Hisaki, Hideaki Takano, Hiroshi Shinokubo
    (Angew. Chem. Int. Ed. 2025, 64, e202519612.) DOI: 10.1002/anie.202519612
  3. Composition Dependent Dynamic Behaviors of Non-Stoichiometric Cocrystalline Hydrogen-Bonded Organic Frameworks
    Taito Hashimoto, Ryusei Oketani, Ichiro Hisaki*
    (Small 2025, e08763) DOI: 10.1002/smll.202508763
    2025Small.png
  4. Hydrogen Bond Reformation in Tetracarboxylic Acid-Based Organic Frameworks with Square Lattice Topology
    Haruka Tsuji (Kubo), Ichiro Hisaki*
    (Chem. Eur. J. 2025, 31, e02303) DOI: 10.1002/chem.202502303
    Concept article
    2025CEJ-3.png
  5. Spontaneous Chiral Symmetry Breaking in a Single Crystal
    Ryusei Oketani,* Musashi Okada, Kentaro Takaji, Hajime Shigemitsu, Toshiyuki Kida, Takuya Nakashima, Ichiro Hisaki*
    (Chem. Sci. 2025, 16, 17621-17629) DOI: 10.1039/D5SC02623G
    Press Release
    Inside front cover picture
    2025CS.png
  6. Taming m-Quionodimethanes by Dispersion Force: Cyclodimerization of (Trialkylsilyl)ethynyl-substituted Indeno[2.1-b]fluorenes and Fluoereno[2.3-b]fluorenes
    Ching-En Hung, Hsin-Chung Lin, Rumi Ozawa, Yoagajivan Rout, Hirokazu Miyoshi, Ichiro Hisaki, Yutaka Ie, Yen-Ju Cheng,* Yoshito Tobe*
    (Chem. Eur. J. 2025, 31, e02053) DOI:10.1002/chem.202502053
  7. Ring-Size Effect on Molecular Assembly Structures and Optical Properties of C3-Symmetrical Dehydrobenzoannulene Derivatives
    Yotaro Kasahara, Takashi Takeda,* Shun Dekura, Hayato Anetai, Atsuro Takai, Ichiro Hisaki, Masayuki Takeuchi, Tomoyuki Akutagawa*
    (J. Phys. Chem. B 2025, 129, 8603−8614) DOI: 10.1021/acs.jpcb.5c04027
  8. Layer Sliding-Induced Fluorescence Changes in a Flexible Hydrogen-Bonded Organic Framework
    Taito Hashimoto, Mario de la Hoz Tomás, Ryusei Oketani, Boiko Cohen, Abderrazzak Douhal,* Ichiro Hisaki*
    (Chem. Eur. J. 2025, 31, e202502078) DOI: 10.1002/chem.202502078
    2025CEJ-2.png
  9. Desolvation-Induced Network Reformation and Cracking in the Single Crystals of Hydrogen-Bonded Frameworks Composed of Tetraazaanthraquinone and Anthraquinone Derivatives
    Haruka Kubo, Ryusei Oketani, Ichiro Hisaki*
    (Angew. Chem. Int. Ed. 2025, 64, e202510977) DOI: 10.1002/anie.202510977
    2025ACIE2.png
  10. Formation of a hydrogen-bonded 63-network composed of 1,2,3-tris(4-carboxyphenyl)benzene
    Takuto Fujii, Kentaro Takaji, Kazuki Shiga, Ryusei Oketani, Hajime Shigemitsu, Toshiyuki Kida, Norimitsu Tohnai, Ichiro Hisaki*
    (Chem. Lett. 2025, 54, upaf111) DOI:10.1093/chemle/upaf1112025CL-1.png
  11. Supramolecular Polymorphism of Hydrogen-Bonded C3-Symmetrical Hexadehydrotribenzo[12]annulene Derivative
    Yotaro Kasahara, Takashi Takeda, Shun Dekura, Yoshiki Ishii, Hayato Anetai, Atsuro Takai, Ichiro Hisaki, Masayuki Takeuchi, Tomoyuki Akutagawa*
    (J. Am. Chem. Soc. 2025, 147, 18783-18795.) DOI: 10.1021/jacs.5c02529
  12. Hydrogen-Bonded Framework with Low-Density Hexagonal Network Structure Formed by Diethynylterphenyl-Bridged Macrocyclic Hexacarboxylic Acid
    Yuzuru Kanetada, Ryusei Oketani, Toshiyuki Sasaki, Kouhei Ichiyanagi, Ichiro Hisaki*
    (Asian J. Org. Chem. 2025, 14, e202500288) DOI: 10.1002/ajoc.202500288
    Dedicated to the memory of Prof. Dr. Masahiko Iyoda
    2025AJOC.png
  13. Hydrogen-bonded Ladder Frameworks Composed of Low Symmetric Tricarboxylic Acids
    Namiki Tanaka, Taito Hashimoto, Yuto Suzuki, Ryusei Oketani, Ichiro Hisaki*
    (Cryst. Growth Des. 2025, 25, 1851-1859.) DOI: 10.1021/acs.cgd.4c01697
    2025CGD.png
  14. A Robust Layer-Motif Composed of Binaphthyl Dibenzoic Acid Derivatives in Inclusion Crystals
    Ayano Fujiwara, Ryusei Oketani, Ichiro Hisaki*
    (Bull. Chem. Soc. Jpn. 2025, 98, uoaf013) DOI: 10.1093/bulcsj/uoaf013
    Featured as Selected Paper
    Inside Cover Picture
    2025BCSJ.png
  15. Conversion of Isolated Voids into Channel Spaces by Modulating The Stacking Manner of Hydrogen-Bonded Ladders
    Naoto Murakami, Ryusei Oketani, Ichiro Hisaki*
    (Chem. Asian J. 2025, 20, e202401317) DOI: 10.1002/asia.202401317
    2025CEJ.png
  16. Single crystalline, Non-stoichiometric Hydrogen-bonded Organic Frameworks Showing Versatile Fluorescence Depending on Composition Ratios and Distributions
    Taito Hashimoto, Mario de la Hoz Tomás, Ryusei Oketani, Boiko Cohen, Miki Naruoka, Norimitsu Tohnai, Abderrazzak Douhal,* Ichiro Hisaki*
    (Angew. Chem. Int. Ed. 2025, 64, e202419992) DOI: 10.1002/anie.202419992
    Selected for VIP (Very Important Paper)
    Back Side Cover Picture

    2025ACIE.png

Review and account (2024)
  1. Supramolecular synthons, tectons, and crystal structures of noncovalent organic frameworks
    Ichiro Hisaki,* Takuto Fujii, Ryusei Oketani
    (Chem. Phys. Rev. 2024, 5, 041304.) DOI: 10.1063/5.0238032 Open Access!
  2. Structural Details of Carboxylic Acid-based Hydrogen-bonded Organic Frameworks (HOFs)
    Yuto Suzuki, Ichiro Hisaki*
    Polym. J. 2024, 56, 1-16. DOI:    10.1038/s41428-023-00840-2 Open Access!
    Selected for Cover Picture
Original paper (2024)
  1. Synthesis, Solid State Structures, and Properties of Linear and Tripodal Flexible Molecules with Pyrazinopyrazine Moieties
    Yuto Ohmura, Ryusei Oketani, Akihito Konishi, Makoto Yasuda, Ichiro Hisaki*
    (Chem. Lett. 2024, 53, upae140) DOI: 10.1093/chemle/upae140
    2024CL.jpg
  2. Crystallization-Induced Diastereomeric Transformation of Chiral Ozanimod Key Intermediate Using Homogeneous
    Ryusei Oketani,* Koki Shiohara, Ichiro Hisaki*
    (Cryst. Growth Des. 2024, 24, 5397-5401.) DOI: 10.1021/acs.cgd.4c00604
    2024CGD-1.jpg
  3. Transition Behaviors of Isostructural Hydrogen-Bonded Frameworks Composed of Naphthalene, Quinoxaline, and Pyrazinopyrazine Derivatives
    Haruka Kubo, Shunsuke Konishi, Ryusei Oketani, Takashi Hayashi, Ichiro Hisaki*
    (Chem. Eur. J. 2024, 30, e202401645.) DOI: 10.1002/chem.202401645 Open Access!
    Selected for Hot paper
    Selected for Inside Cover Picture
    2024CEJ.jpg
  4. Unravelling the Photobehavior of 2,1,3-Benzothiadiazole-based HOF and its Molecular Units: Experimental and Theoretical Insights into their Spectroscopic Properties in Solutions and Solid State
    Mario de la Hoz Tomás, Juan Ángel Organero, Maria Rosaria di Nunzio, Taito Hashimoto, Ichiro Hisaki, Abderrazzak Douhal*
    (J. Mater. Chem. C 2024, 12, 9112-9129.) DOI: 10.1039/D4TC01368A
    Selected for Front Cover Picture
  5. Semicontinuous Temperature Cycle-Induced Deracemization Using an Axially Chiral Naphthamide
    Ryusei Oketani,* Riku Naito, Ichiro Hisaki*
    (Org. Process Res. Dev. 2024, 28, 3570-3577.) DOI: 10.1021/acs.oprd.4c00091
    Selected for Front Cover Picture
    2024OPRD.jpg
  6. Photo-responsive Hydrogen-Bonded Molecular Networks Capable of Retaining Crystalline Periodicity after Isomerization
    Koki Kasuya, Ryusei Oketani, Souta Matsuda, Hiroyasu Sato, Fumitaka Ishiwari, Akinori Saeki, Ichiro Hisaki*
    (Angew. Chem. Int. Ed. 2024, e202404700) DOI: 10.1002/anie.202404700 Open Access !
    2024ACIE.jpg
  7. A Hydrogen-Bonded, Hexagonally-Networked, Layered Framework with Large Aperture Designed by Structural Synchronization of a Macrocycle and Supramolecular Synthon
    Hiroki Yoshimura, Ryusei Oketani, Miki Naruoka, Norimitsu Tohnai, Ichiro Hisaki*
    (Precis. Chem. 2024, 2, 221-228.) DOI: 10.1021/prechem.4c00019 Open Access !
    Selected for Front Cover Picture
    2024PC.jpg
  8. Thermal fluctuation-induced selective CO2 uptake of seemingly nonporous N,C-protected dipeptide crystals as elucidated by in situ X-ray crystallographic analysis
    Kazuaki Yamanaka, Ryusei Oketani, Yuya Mori, Takashi Sato, Seiji Tsuzuki, Hiroki Takahashi, Hirohito Tsue*
    (CrystEngComm 2024, 26, 2314-2321.) DOI: 10.1039/D3CE01018J
  9. An Expanded Hydrogen-bonded Organic Framework Formed by A Tetrakis(terphenyl)ethene Derivative
    Mao Yamaguchi, Mario de la Hoz Tomás, Ayano Fujiwara, Ryusei Oketani, Kohei Okubo, Kouki Oka, Norimitsu Tohnai, Abderrazzak Douhal,* Ichiro Hisaki*
    (Bull. Chem. Soc. J. 2024, 97, uoae004) DOI: 10.1093/bulcsj/uoae004
    Selected Paper
    Selected for Inside Cover Picture
    2024BCSJ.jpg
Review and account (2021)

  1. HOFs Under Light: Relevance to Photon-Based Science and Applications
    Maria Rosariadi Nunzio, Ichiro Hisaki, Abderrazzak Douhal
    J. Photochem. Photobio. C: Photochem. Rev. 2021, 47, 100418.
    DOI: 10.1016/j.jphotochemrev.2021.100418
Review and account (2020)
  1. Hydrogen-bonded porous frameworks constructed by rigid π-conjugated molecules with carboxy groups
    Ichiro Hisaki
    J. Incl. Phenom. Macro. Chem. 2020, 96, 215-231. (Open Access!)
    DOI: 10.1007/s10847-019-00972-0
Book (2020)
  1. Layered Hydrogen-bonded Organic Frameworks as Highly Crystalline Porous Materials
    Ichiro Hisaki, Qin Ji, Kiyonori Takahashi, Takayoshi Nakamura
    In Advances in Organic Crystal Chemistry -Comprehensive Reviews 2020,     Eds. M. Sakamoto and H. Uekusa, Springer, 2020, chapter 11, 199-220.
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