Absorption and Fluorescence Spectra of Polydiacetylenes (4BCMU and 3BCMU) in Solution
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概要
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Absorption and fluorescence spectra have been measured on soluble poly-diacetylenes (4BCMU, 3BCMU), having the side group R=n-BCMU (n-butoxycarbonyl methyl urethane, n=4, 3), in chloroform/n-hexane mixture solvents forvarious solvent compositions and temperatures. The observed features of theabsorption spectra are interpreted by assuming that two types of the coil-to-rodconformational transition take place in the two distinct isomeric bond-structures,which presumably correspond to the acetylenic and butatrienic types, respectively.Experimental phase-diagrams are presented as functions of solvent compositionand temperature. Fluorescence bands were observed in rod-like polymer solutionsat low temperatures. It is suggested that these largely Stokes-shifted omission bandsare due to the self-trapped x-x" excitons on the one-dimensional polymer chains.
- 社団法人日本物理学会の論文
- 1985-10-15
著者
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TOKURA Yoshinori
Department of Applied Physics, University of Tokyo
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KODA Takao
Department of Mathematics and Physics, Faculty of Science, Japan Women's University
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Tokura Yoshinori
Department Of Applied Physics Faculty Of Engineering The University Of Tokyo
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Koda Takao
Department Of Applied Physics Faculty Of Engineering The University Of Tokyo
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OHNUMA HIROSHI
Department of Neurology, Hematology, Metabolism, Endocrinology and Diabetology (DNHMED), Yamagata Un
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KOTAKA Tadao
Department of Industrial Chemistry, Kyoto University
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Tokura Yoshinori
Department Of Physics University Of Tokyo
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KANETAKE Tatsuo
Department of Applied Physics, University of Tokyo
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Kotaka Tadao
Department Of Industrial Chemistry Kyoto University
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Ohnuma H
Department Of Macromolecular Science Faculty Of Science Osaka University
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Ohnuma Hiroshi
Department Of Macromolecular Science Faculty Of Science Osaka University
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Tokura Yoshinori
Department Of Applied Physics And Quantum Phase Electronics Center University Of Tokyo
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