An innovative platform for non-thermal, synchronic control of macroscopic phase and molecular properties in micro scale.

• Project/Area Number: 18685006
• Research Category: Grant-in-Aid for Young Scientists (A)
• Allocation Type: Single-year Grants
• Research Field: Inorganic chemistry
• Research Institution: Kyoto University
• Principal Investigator: CHANG Ho-chol Kyoto University, 大学院・工学研究科, 助教 (60335198)
• Project Period (FY): 2006 – 2008
• Project Status: Completed (Fiscal Year 2008)
• Budget Amount: ¥30,290,000 (Direct Cost: ¥23,300,000、Indirect Cost: ¥6,990,000); Fiscal Year 2008: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000); Fiscal Year 2007: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000); Fiscal Year 2006: ¥21,450,000 (Direct Cost: ¥16,500,000、Indirect Cost: ¥4,950,000)
• Keywords: 電子移動 / 同期変換 / レドックス / 光融解 / 原子価互変異性 / 金属錯体 / 非熱的相転移 / デバイス / 双安定性 / 光誘起相転移 / 電気化学 / 酸化還元

Research Abstract

本研究では、熱を利用することなくミクロな分子の状態と分子集団により形成される巨視的な相を同時に変換、制御するための画期的な物理化学的手法を見いだすことを目的に研究を展開した。その結果、電気化学的に液晶状態からイオン性液体へ分子状態と共に双安定化させることに成功すると共に、室温及び融点直下におけるシングルパルス光誘起-光結晶融解挙動の実現に世界で初めて成功した。

Research Products

• [Journal Article] Polymorph-Dependent Molecular Valence Tautomerism Synchronized with Crystal-Melt Phase Transitions (2009)
  • Author(s): Daisuke Kiriya, Ho-Chol Chang, Kohei Nakamura, Daisuke Tanaka, Ko Yoneda, Susumu Kitagawa
  • Journal Title: Chem. Mat. 21 Pages: 1980-1988
  • Peer Reviewed
• [Journal Article] llosteric binding of aminoalcohols and diamines by dimeric zinc biladienone (2009)
  • Author(s): Tomofumi Shimizu, Naomi Asano, Tadashi Mizutani, Ho-Chol Chang, Susumu Kitagawa
  • Journal Title: Tetrahedron Lett. 50 Pages: 536-539
  • Peer Reviewed
• [Journal Article] A Redox-Active Columnar Metallomesogen and Its Cyclic Voltammetric Response (2009)
  • Author(s): Ho-Chol Chang, Tomoki Shiozaki, Akiko Kamata, Keisuke Kishida, Takeshi Ohmori, Daisuke Kiriya, Takae Yamauchi, Hirotaka Furukawa, Susumu Kitagawa
  • Journal Title: J. Mat. Chem.(Front Cover) 17 Pages: 4136-4138
  • Peer Reviewed
• [Journal Article] Polymorph-Dependent Molecular Valence Tautomerism Synchronized with Crystal-Melt Phase Transitions (2009)
  • Author(s): D. Kiriya, H.-C. Chang, K. Nakamura, D. Tanaka, K. Yoneda, S. Kitagawa
  • Journal Title: Chemistry of Materials (印刷中)
  • Peer Reviewed
• [Journal Article] Dynamic Torsional Motion of a Diruthenium Complex with Four Homo-Catecholates and First Synthesis of a Diruthenium Complex with Mixed-Catecholates (2008)
  • Author(s): Ho-Chol Chang, Katsunori Mochizuki, and Susumu Kitagawa
  • Journal Title: J. Mol. Struc.(A Special Issue for A. F. Cotton) 890 Pages: 303-308
  • Peer Reviewed
• [Journal Article] Ambipolar, Single-Component, Metal-Organic Thin-Film Transistors with High and Balanced, Hole and Electron Mobilities (2008)
  • Author(s): Shin-ichiro Noro, Taishi Takenobu, Yoshihiro Iwasa, Ho-Chol Chang, Susumu Kitagawa, Tomoyuki Akutagawa, and Takayoshi Nakamura
  • Journal Title: Adv. Mat. 20 Pages: 3399-3403
  • Peer Reviewed
• [Journal Article] Molecule-based Valence Tautomeric Bistability Synchronized with a Macroscopic Crystal-Melt Phase Transition (2008)
  • Author(s): Daisuke Kiriya, Ho-Chol Chang, and Susumu Kitagawa
  • Journal Title: J. Am. Chem. Soc. 130 Pages: 5515-5522
  • Peer Reviewed
• [Journal Article] Ambipolar, Single-Component, Metal-Organic Thin-Film Transistors with High and Balanced, Hole and Electron Mobilities (2008)
  • Author(s): S.-i. Noro, T. Takenobu, Y. Iwasa, H.-C. Chang, S. Kitagawa, T. Akutagawa, T. Nakamura
  • Journal Title: Advanced Materials 20 Pages: 3399-3403
  • Peer Reviewed
• [Journal Article] Dynamic Torsional Motion of a Diruthenium Complex with Four Homo-Catecholates and First Synthesis of a Diruthenium Complex with Mixed-Catecholates (2008)
  • Author(s): H.-C. Chang, K. Mochizuki, S. Kitagawa
  • Journal Title: Journal of Molecular Structures (Cotton特別号) 890 Pages: 303-308
  • Peer Reviewed
• [Journal Article] Molecule-based Valence Tautomeric Bistability Synchronized with a Macroscopic Crystal-Melt Phase Transition (2008)
  • Author(s): D. Kiriya, H.-C. Chang, S. Kitagawa
  • Journal Title: J. Am. Chem. Soc. 130 Pages: 5515-5522
  • Peer Reviewed
• [Journal Article] A Redox-Active Columnar Metallomesogen and lts Cyclic Voltammetric Response (2007)
  • Author(s): H. -C. Chang, et. al.
  • Journal Title: J. Mat. Chem. 17 Pages: 4136-4138
  • Peer Reviewed
• [Journal Article] Structural and Spectroscopic Characterization of a Diruthenium o-Dioxolene Complex Possessing a SOMO Delocalized over the Entire Molecule, [Ru_2(3,6-DTBDiox)_4] (2006)
  • Author(s): Katsunori Mochizuki, Takashi Kawamura, Ho-Chol Chang, and Susumu Kitagawa
  • Journal Title: Inorg. Chem. 45 Pages: 3990-3997
  • Peer Reviewed
• [Journal Article] Tuning of the Spin States in Trinuclear Cobalt Compounds of Pyridazine by the Second Simple Bridging Ligand (2006)
  • Author(s): Tao Yi, Ho-Chol Chang, Song Gao, and Susumu Kitagawa
  • Journal Title: Eur. J. Inorg. Chem. Pages: 1381-138
  • Peer Reviewed
• [Journal Article] Polytypic Phase Transition in Alkyl Chain-Functionalized Valence Tautomeric Complexes (2006)
  • Author(s): Daisuke Kiriya, Ho-Chol Chang, Akiko Kamata, and Susumu Kitagawa
  • Journal Title: Dalton Trans.(Front Cover) Pages: 1377-1382
  • Peer Reviewed
• [Journal Article] Structural and Spectroscopic Characterization of a Diruthenium o-Dioxolene Complex Possessing a SOMO Delocalized over the Entire Molecule, [Ru2 (3, 6-DTBDiox) 4]- (2006)
  • Author(s): K.Mochizuki, T.Kawamura, H.-C.Chang, S.Kitagawa
  • Journal Title: Inorg.Chem. 45 Pages: 3990-3997
• [Journal Article] Tuning of the Spin States in Trinuclear Cobalt Compounds of Pyridazine by the Second Simple Bridging Ligand (2006)
  • Author(s): Tao Yi, Chang Ho-Chol, Song Gao, Susumu Kitagawa
  • Journal Title: Eur.J.Inorg.Chem. Pages: 1381-1387
• [Journal Article] Polytypic Phase Transition in Alkyl Chain-Functionalized Valence Tautomeric Complexes (2006)
  • Author(s): D.Kiriya, H.-C.Chang, A.Kamata, S.Kitagawa
  • Journal Title: Dalton Trans. Pages: 1377-1382
• [Journal Article] Synthesis, Structures, and Magnetic Properties of the Copper(II), Cobalt(II), and Manganese(II) Complexes with 9-Acridinecarboxylate and 4-Quinolinecarboxylate Ligands (2005)
  • Author(s): Xian-He Bu, Ming-Liang Tong, Ya-Bo Xie, Jian-Rong Li, Ho-Chol Chang, Susumu Kitagawa, Joan Ribas
  • Journal Title: Inorg. Chem. 44 Pages: 9837-9846
  • Peer Reviewed
• [Journal Article] Effect of Countercations on the Structural Isomerization of a Dianionic Diruthenium Complex with a Ligand-Unsupported Ru.Ru Bond (2005)
  • Author(s): Katsunori Mochizuki, Ho-Chol Chang, Takashi Kawamura, and Susumu Kitagawa
  • Journal Title: Chem. Lett. Pages: 1622-1623
  • Peer Reviewed
• [Journal Article] Metal-Organic Thin-Film Transistor Based on Ni^<II>-o-diiminobenzosemiquinonate Complex (2005)
  • Author(s): Shin-ichiro Noro, Ho-Chol Chang, Taishi Takenobu, Tomoyuki Akutagawa, Daisuke Tanaka, Takayoshi Nakamura, Susumu Kitagawa, Yoshihiro Iwasa, Tetsuya Aoyama, Takafumi Sassa, Tatsuo Wada
  • Journal Title: J. Am. Chem. Soc. 127 Pages: 10012-10013
  • Peer Reviewed
• [Journal Article] Formation of 3D networks by H-bonding from novel trinuclear or 1D chain complexes of zinc(II) and cadmium(II) with isonicotinic acid analogues and the effects of π-π stacking (2005)
  • Author(s): Xian-He Bu, Ming-Liang Tong, Jian-Rong Li, Ho-Chol Chang, Li-Jun Li, Susumu Kitagawa
  • Journal Title: Cryst. Eng. Comm. 7 Pages: 411-416
  • Peer Reviewed
• [Journal Article] Porous Lanthanide-organic Framework with Zeolite-like Topology (2005)
  • Author(s): Tapas Kumar Maji, Golam Mostafa, Ho-Chol Chang, Susumu Kitagawa
  • Journal Title: Chem. Commun. Pages: 2436-3438
  • Peer Reviewed
• [Journal Article] Effect of the Metal-Assisted Assembling Mode on the Redox States of Hexaazatriphenylene Hexacarbonitrile (2005)
  • Author(s): Shuhei Furukawa, Takashi Okubo, Shigeyuki Masaoka, Daisuke Tanaka, Ho-Chol Chang, Susumu Kitagawa
  • Journal Title: Angew. Chem. Int. Ed. 44 Pages: 2700-2704
  • Peer Reviewed
• [Journal Article] Effects of Counter Cations on Structures, Redox, and Spectroscopic Properties of Diruthenium Catecholate Complexes with Ligand-unsupported Ru.Ru Bonds (2005)
  • Author(s): Ho-Chol Chang, Katsunori Mochizuki, and Susumu Kitagawa
  • Journal Title: Inorg, Chem. 44 Pages: 3810-3817
  • Peer Reviewed
• [Journal Article] Substituent-directed Structural and Physicochemical Controls of Diruthenium Catecholate Complexes with Ligand-unsupported Ru.Ru Bonds (2005)
  • Author(s): Ho-Chol Chang, Katsunori Mochizuki, and Susumu Kitagawa
  • Journal Title: Inorg, Chem. 44 Pages: 3799-3809
  • Peer Reviewed
• [Journal Article] A facile and versatile preparation of bilindiones and biladienones from tetraarylporphyrins (2005)
  • Author(s): Takae Yamauchi, Tadashi Mizutani, Kenji Wada, Shoji Horii, Hirotaka Furukawa, Shigeyuki Masaoka, Ho-Chol Chang and Susumu Kitagawa
  • Journal Title: Chem. Commun. Pages: 1309-1311
  • Peer Reviewed
• [Journal Article] Formation of a Ligand-based Mixed-valence Cluster Triggered by Dehydration Condensation of Semiquinonates with o-Phenylenediamines (2005)
  • Author(s): Ho-Chol Chang, Nao Nishida, and Susumu Kitagawa
  • Journal Title: Chem. Lett. Pages: 402-403
  • Peer Reviewed
• [Presentation] Macroscopic Phase Transformation Synchronized with Electron Transfer at Molecules (2009)
  • Author(s): Ho-Chol Chang
  • Organizer: Asian International Symposium-Coordination and Organometallic Chemistry
  • Place of Presentation: Tokyo, Japan.
  • Year and Date: 2009-03-28
• [Presentation] Macroscopic Phase Transformation Synchronized with Electron Transfer at Molecules (2009)
  • Author(s): Ho-Chol Chang
  • Organizer: 2nd Japan-Russia Joint Symposium on Chiral porous coordination polymers for separation and catalysis
  • Place of Presentation: Kyoto, Japan.
• [Presentation] 液晶場におけるレドックス化学 (2008)
  • Author(s): 張浩徹
  • Organizer: 第58回錯体化学討論会
  • Place of Presentation: 金沢大学
  • Year and Date: 2008-09-20
• [Presentation] Synchronicity in Macroscopic Transformation and Electron Transfer Processes at Molecular Scale (2008)
  • Author(s): Ho-Chol Chang
  • Organizer: Asian International Symposium-Coordination and Organometallic Chemistry
  • Place of Presentation: Tokyo, Japan.
  • Year and Date: 2008-03-28
• [Presentation] Synchronicity in Macroscopic Transformation and Electron Transfer Processesat Molecular Scale (2008)
  • Author(s): Ho-Chol Chang
  • Organizer: Asian lnternational Symposium-Coordination and Organometallic Chemistry
  • Place of Presentation: 東京
  • Year and Date: 2008-03-28
• [Presentation] 電子で繋ぐ分子とマクロ世界 (2008)
  • Author(s): 張浩徹
  • Organizer: 東北大学G-COE分子系高次構造体化学国際教育研究拠点主催 第2回研究会 金属錯体の固体物性科学最前線.錯体化学と固体物性物理の新奇融合領域創成をめざして
  • Place of Presentation: 東北大学
• [Presentation] Stimuli-sensitive dinuclear complexes with redox-active catecholates (2008)
  • Author(s): Ho-Chol Chang, (代表)
  • Organizer: 7th China-Japan Joint Symposium on Metal Cluster Compounds
  • Place of Presentation: Sapporo.
• [Presentation] 液晶場におけるレドックス化学 (2008)
  • Author(s): 張浩徹
  • Organizer: 第58回錯体化学討論会、シンポジウム : レドックス金属錯体が拓く未来科学
  • Place of Presentation: 金沢大学
• [Presentation] Redox-active Metallomesogens (2007)
  • Author(s): Ho-Chol Chang (代表)
  • Organizer: 10th International Symposium on Metallomesogens
  • Place of Presentation: Cetraro, Italy.
• [Presentation] Redox-active Metallomesogens (2007)
  • Author(s): Ho-Chol Chang (代表)
  • Organizer: 9th European Conference on Liquid Crystals
  • Place of Presentation: Lisbon, Portugal
• [Presentation] Redox-active Molecular Assemblies in Solid, Liquid, and Liquid Crystals (2006)
  • Author(s): Ho-Chol Chang (代表)
  • Organizer: 37th International Conference on Coordination Chemistry
  • Place of Presentation: Capetown, South Africa.
• [Presentation] Redox-active Molecular Assembly within Solid, Liquid, and Liquid Crystal (2005)
  • Author(s): Ho-Chol Chang
  • Organizer: First International Symposium on Chemistry of Coordination Space -ISCCS
  • Place of Presentation: Okazaki, Japan
• [Book] Inorganic Chromotropism-Basic Concepts and Applications of Colored Materials (2007)
  • Author(s): Susumu Kitagawa and Ho-Chol Chang
  • Publisher: Springer-Verlag
• [Remarks]
  • URL: http://barato.sci.hokudai.ac.jp/~cc/