Alignment of photoconductive self-assembled fibers composed of π-conjugated molecules under electric fields

Yoshiko Shoji; Masafumi Yoshio; Takuma Yasuda; Masahiro Funahashi; Takashi Kato

doi:10.1039/B915822G

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Journal of Materials Chemistry

Issue 1, 2010

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Alignment of photoconductive self-assembled fibers composed of π-conjugated molecules under electric fields

Yoshiko Shoji , Masafumi Yoshio , Takuma Yasuda , Masahiro Funahashi and Takashi Kato

J. Mater. Chem., 2010, 20, 173-179

DOI: 10.1039/B915822G
Received 03 Aug 2009, Accepted 06 Oct 2009
First published on the web 05 Nov 2009
This article is part of the collection: 20th anniversary starts here!

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Abstract
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Aligned self-assembled fibers have been obtained for a phenylbithiophene derivative with a laterally fluorinated phenylene group by the application of electric fields. These fibrous aggregates exhibit photoconductive properties due to the stacking of the π-conjugated moiety. In contrast, a phenylbithiophene derivative without fluoro substituents forms unaligned fibers under electric fields. The dielectric anisotropy of the fluorinated molecule plays a key role in the alignment of photoconductive fibrous aggregates.

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The dipole moment of 1a, gelation properties of 1a and b, self-assembly of 1a and b in dodecylbenzene under electric fields, molecular modelof 1a, X-ray diffraction pattern of the xerogel of 1b at room temperature, FT-IR spectra of the mixture of 1a and dodecylbenzene, UV-vis and fluorescence spectra ofthe mixture of 1a and dodecylbenzene, photocurrent responses of therandomly entangled fibrous aggregates of 1a in dodecylbenzene, transit photocurrent curves of thefibers of 1a in dodecylbenzene
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Yoshiko Shoji
Masafumi Yoshio
Takuma Yasuda
Masahiro Funahashi
Takashi Kato

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Journal of Materials Chemistry

Alignment of photoconductive self-assembled fibers composed of π-conjugated molecules under electric fields

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