76
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Kobatake S, Yamashita I. Photoinduced phase transition between polymorphic crystals of a photochromic diarylethene. Acta Crystallogr A 2008. [DOI: 10.1107/s0108767308081208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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77
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Nishi H, Kobatake S. Reactivity and optical property of diarylethene–gold nanoparticle complex in the film. Acta Crystallogr A 2008. [DOI: 10.1107/s0108767308082044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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78
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Nishizawa N, Furukawa D, Kobatake S, Matsumoto A. Change in the molecular structure of muconic esters during photoisomerization in the solid state. Acta Crystallogr A 2008. [DOI: 10.1107/s0108767308085851] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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79
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Fujiwara H, Kobatake S. X-ray crystallographic analysis of by-products produced in photochromism of dithienylcyclopentenes. Acta Crystallogr A 2008. [DOI: 10.1107/s0108767308082536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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80
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Nishi H, Kobatake S. Reduction Reaction to Thiol Group of Dithiobenzoate End Group in Polystyrene Polymerized by Reversible Addition–Fragmentation Chain Transfer. CHEM LETT 2008. [DOI: 10.1246/cl.2008.630] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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81
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Nishi H, Kobatake S. Photochromism and Optical Property of Gold Nanoparticles Covered with Low-Polydispersity Diarylethene Polymers. Macromolecules 2008. [DOI: 10.1021/ma702882t] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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82
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Saita K, Kobatake S, Fukaminato T, Nanbu S, Irie M, Sekiya H. Raman spectroscopic study on isomers of photochromic 1,2-bis(2,5-dimethyl-3-thienyl)perfluorocyclopentene in crystal and stability of the closed-ring forms in the open-ring forms. Chem Phys Lett 2008. [DOI: 10.1016/j.cplett.2008.01.056] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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83
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Furukawa D, Kobatake S, Matsumoto A. Direct observation of change in the molecular structure of benzyl (Z,Z)-muconate during photoisomerization in the solid state. Chem Commun (Camb) 2008:55-7. [DOI: 10.1039/b714792a] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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84
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Morimoto M, Kobatake S, Irie M. Absolute asymmetric photocyclization in chiral diarylethene co-crystals with octafluoronaphthalene. Chem Commun (Camb) 2008:335-7. [DOI: 10.1039/b713694c] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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85
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Ryo S, Ishibashi Y, Murakami M, Miyasaka H, Kobatake S, Irie M. Multiphoton-gated photochromic reaction of diarylethene derivatives in PMMA solid film. J PHYS ORG CHEM 2007. [DOI: 10.1002/poc.1190] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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86
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Ishibashi Y, Tani K, Miyasaka H, Kobatake S, Irie M. Picosecond laser photolysis study of cycloreversion reaction of a diarylethene derivative in polycrystals: Multiphoton-gated reaction. Chem Phys Lett 2007. [DOI: 10.1016/j.cplett.2007.02.032] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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87
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Kobatake S, Takami S, Muto H, Ishikawa T, Irie M. Rapid and reversible shape changes of molecular crystals on photoirradiation. Nature 2007; 446:778-81. [PMID: 17429396 DOI: 10.1038/nature05669] [Citation(s) in RCA: 773] [Impact Index Per Article: 45.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2006] [Accepted: 02/10/2007] [Indexed: 11/08/2022]
Abstract
The development of actuators based on materials that reversibly change shape and/or size in response to external stimuli has attracted interest for some time. A particularly intriguing possibility is offered by light-responsive materials, which allow remote operation without the need for direct contact to the actuator. The photo-response of these materials is based on the photoisomerization of constituent molecules (typically trans-cis isomerization of azobenzene chromophores), which gives rise to molecular motions and thereby deforms the bulk material. This effect has been used to create light-deformable polymer films and gels, but the response of these systems is relatively slow. Here we report that molecular crystals based on diarylethene chromophores and with sizes ranging from 10 to 100 micrometres exhibit rapid and reversible macroscopic changes in shape and size induced by ultraviolet and visible light. We find that on exposure to ultraviolet light, a single crystal of 1,2-bis(2-ethyl-5-phenyl-3-thienyl)perfluorocyclopentene changes from a square shape to a lozenge shape, whereas a rectangular single crystal of 1,2-bis(5-methyl-2-phenyl-4-thiazolyl)perfluorocyclopentene contracts by about 5-7 per cent. The deformed crystals are thermally stable, and switch back to their original state on irradiation with visible light. We find that our crystals respond in about 25 microseconds (that is, about five orders of magnitude faster than the response time of the azobenzene-based polymer systems) and that they can move microscopic objects, making them promising materials for possible light-driven actuator applications.
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88
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Kobatake S, Terakawa Y. Acid-induced photochromic system switching of diarylethene derivatives between P- and T-types. Chem Commun (Camb) 2007:1698-700. [PMID: 17457412 DOI: 10.1039/b700177k] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
P-type photochromic diarylethenes having a diethylamino group can switch to T-type photochromic system by the addition of trifluoromethanesulfonic acid as external stimuli.
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89
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Hamazaki T, Matsuda K, Kobatake S, Irie M. Photostimulated Crystal Lattice Change Induced by the Photochemical Ring-Opening Reaction of Diarylethene Molecules. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2007. [DOI: 10.1246/bcsj.80.365] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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90
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Kobatake S, Kuma S, Irie M. Single-crystalline photochromism of diarylethene dimers bridged by a spiro structure. J PHYS ORG CHEM 2007. [DOI: 10.1002/poc.1196] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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91
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Nakamura S, Kobayashi T, Takata A, Uchida K, Asano Y, Murakami A, Goldberg A, Guillaumont D, Yokojima S, Kobatake S, Irie M. Quantum yields and potential energy surfaces: a theoretical study. J PHYS ORG CHEM 2007. [DOI: 10.1002/poc.1245] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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92
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Matsuda H, Ito S, Nagasawa Y, Asahi T, Masuhara H, Kobatake S, Irie M, Miyasaka H. Higher-order multiphoton imaging by femtosecond near-infrared laser microscope system. J Photochem Photobiol A Chem 2006. [DOI: 10.1016/j.jphotochem.2006.04.014] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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93
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Uchida K, Tsuchida E, Nakamura S, Kobatake S, Irie M. Photochromic Reactions of Diarylethenes with Isopropyl Groups. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/10587250008023887] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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94
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Kobatake S, Kuratani H. Photochromism of Diarylethene-functionalized Polystyrene with High Conversion in a Solid-state Polymer Film. CHEM LETT 2006. [DOI: 10.1246/cl.2006.628] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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95
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Uchida K, Walko M, de Jong JJD, Sukata SI, Kobatake S, Meetsma A, van Esch J, Feringa BL. Diastereoselective cyclization of a dithienylethene switch through single crystal confinement. Org Biomol Chem 2006; 4:1002-6. [PMID: 16525543 DOI: 10.1039/b517370a] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Upon UV irradiation of the hydrogen-bond confined crystal state of a dithienylhexafluorocyclopentene with (R)-N-phenylethylamide substituents, the photochemical cyclization reaction proceeds diastereoselectively to form the coloured, closed-ring isomer with 97% de.
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96
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Morimoto M, Kobatake S, Irie M. Photochromism of a diarylethene charge-transfer complex: photochemical control of intermolecular charge-transfer interaction. Chem Commun (Camb) 2006:2656-8. [PMID: 16786077 DOI: 10.1039/b604388g] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A diarylethene derivative bearing a phenylenediamine group formed radical ions with an electron acceptor molecule in solution, and the concentration of the radical ions was modulated by the photochromic reaction of the diarylethene, reflecting the difference in the electron-donating character between the open- and closed-ring isomers.
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97
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Kobatake S, Muto H, Irie M. Excited State Energy Migration and Photochromic Reaction in 1,2-Bis(2,4-dimethyl-3-thienyl)perfluorocyclopentene Single Crystal. CHEM LETT 2006. [DOI: 10.1246/cl.2006.102] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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98
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Kobatake S, Matsumoto Y, Irie M. Conformational Control of Photochromic Reactivity in a Diarylethene Single Crystal. Angew Chem Int Ed Engl 2005. [DOI: 10.1002/ange.200462426] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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99
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Kobatake S, Matsumoto Y, Irie M. Conformational Control of Photochromic Reactivity in a Diarylethene Single Crystal. Angew Chem Int Ed Engl 2005; 44:2148-51. [PMID: 15726556 DOI: 10.1002/anie.200462426] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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100
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Murakami M, Miyasaka H, Okada T, Kobatake S, Irie M. Dynamics and Mechanisms of the Multiphoton Gated Photochromic Reaction of Diarylethene Derivatives. J Am Chem Soc 2004; 126:14764-72. [PMID: 15535701 DOI: 10.1021/ja049177+] [Citation(s) in RCA: 95] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The cycloreversion (ring-opening) process of one of the photochromic diarylethene derivatives, bis(2-methyl-5-phenylthiophen-3-yl)perfluorocyclopentene, was investigated by means of picosecond and femtosecond laser photolysis methods. The drastic enhancement of the reaction yield was observed only by the picosecond laser exposure. The excitation intensity effect of the reaction profiles revealed that the successive multiphoton absorption process leading to higher excited states opened the efficient cycloreversion process with a reaction yield of (50 +/- 10)%, while the one-photon absorption directly pumped to a higher excited state did not lead to the efficient cycloreversion reaction. These results indicate that not the energy of the excitation but the character of the electronic state takes an important role in the enhancement of the cycloreversion reaction.
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