Characterization of distyrylbenzene derivative thin films vapor-deposited on highly oriented poly(p-phenylenevinylene) friction-transfered layers

Jing Ping Ni; Yasukiyo Ueda; Yuji Yoshida; Nobutaka Tanigaki; Kiyoshi Yase; DaiKe Wang

doi:10.1117/12.416905

2 February 2001 Characterization of distyrylbenzene derivative thin films vapor-deposited on highly oriented poly(p-phenylenevinylene) friction-transfered layers

Jing Ping Ni, Yasukiyo Ueda, Yuji Yoshida, Nobutaka Tanigaki, Kiyoshi Yase, DaiKe Wang

Author Affiliations +

Proceedings Volume 4105, Organic Light-Emitting Materials and Devices IV; (2001) https://doi.org/10.1117/12.416905
Event: International Symposium on Optical Science and Technology, 2000, San Diego, CA, United States

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.

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Jing Ping Ni, Yasukiyo Ueda, Yuji Yoshida, Nobutaka Tanigaki, Kiyoshi Yase, and DaiKe Wang "Characterization of distyrylbenzene derivative thin films vapor-deposited on highly oriented poly(p-phenylenevinylene) friction-transfered layers", Proc. SPIE 4105, Organic Light-Emitting Materials and Devices IV, (2 February 2001); https://doi.org/10.1117/12.416905

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