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Proceedings Paper

Characterization of distyrylbenzene derivative thin films vapor-deposited on highly oriented poly(p-phenylenevinylene) friction-transfered layers
Author(s): Jing Ping Ni; Yasukiyo Ueda; Yuji Yoshida; Nobutaka Tanigaki; Kiyoshi Yase; DaiKe Wang
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Paper Abstract

Three kinds of distyrylbenzene derivatives (DSB-1 -3 and -5) which are trimers of p-phenylenevinylene unit were vapor- deposited on a highly oriented PPV friction-transferred layer. Their structural and optical properties in thin film were investigated by transmission electron microscopy (TEM), atomic force microscopy (AFM) and ultraviolet-visible (UV- VIS) spectroscopy. DSB derivatives grew pseudo- homoepitaxially on a PPV friction-transferred layer. The molecular axes of DSB-1 and -3 were oriented parallel to the sliding direction of PPV. On the other hand, DSB-5 molecules adsorbed obliquely to the substrate surface. The polarized absorption spectra of DSB-1 and -3 films indicated remarkable anisotropic features. The dichroic ratios of absorption intensity (I(parallel)I(perpendicular)) were estimated to be 10 and 12 for DSB-1 and -3 films, respectively. The enhanced anisotropic properties were discussed based on the molecular orientation in the film.

Paper Details

Date Published: 2 February 2001
PDF: 10 pages
Proc. SPIE 4105, Organic Light-Emitting Materials and Devices IV, (2 February 2001); doi: 10.1117/12.416905
Show Author Affiliations
Jing Ping Ni, Kobe Univ. and National Institute of Materials and Chemical Research (Japan)
Yasukiyo Ueda, Kobe Univ. (Japan)
Yuji Yoshida, National Institute of Materials and Chemical Research (Japan)
Nobutaka Tanigaki, National Institute of Materials and Chemical Research (Japan)
Kiyoshi Yase, National Institute of Materials and Chemical Research (Japan)
DaiKe Wang, The Ohio State Univ. (United States)

Published in SPIE Proceedings Vol. 4105:
Organic Light-Emitting Materials and Devices IV
Zakya H. Kafafi, Editor(s)

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