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Please use this identifier to cite or link to this item: http://hdl.handle.net/10119/9527

Title: Photoinduced change of dielectric permittivity in molecular doped polymer layer
Authors: Sakai, Heisuke
Murata, Hideyuki
Murakami, Motonobu
Ohkubo, Kei
Fukuzumi, Shunichi
Keywords: photoinduced change
dielectric constant
Issue Date: 2009-12-21
Publisher: American Institute of Physics
Magazine name: Applied Physics Letters
Volume: 95
Number: 25
Start page: 252901
DOI: 10.1063/1.3275800
Abstract: We demonstrate a large photoinduced change of dielectric permittivity due to the charge separated (CS) state of an electron donor-acceptor linked molecule, 6-[4′-(N,N-diphenylamino)phenyl]-3-ethoxycarbonylcoumarin (DPA–CM), doped in a polymethylmethacryrate (PMMA) matrix. Dielectric permittivity of DPA–CM in PMMA film increases from 4.1 to 7.5 under photoirradiation. Electron spin resonance spectra of the films measured under photoirradiation clearly show the formation of the CS state of DPA–CM in PMMA matrix. The origin of the photoinduced change of the dielectric permittivity is ascribed to the realignment of dipole of the CS state of DPA–CM.
Rights: Copyright 2009 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Heisuke Sakai , Hideyuki Murata, Motonobu Murakami, Kei Ohkubo, Shunichi Fukuzumi, Applied Physics Letters, 95(25), 252901- (2009) and may be found at http://link.aip.org/link/APPLAB/v95/i25/p252901/s1
URI: http://hdl.handle.net/10119/9527
Material Type: publisher
Appears in Collections:c10-1. 雑誌掲載論文 (Journal Articles)

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