Experimental determination of molecular polarizability anisotropy of nematogens by depolarized Rayleigh light scattering

KAZUHIRO YOKOTA Department of Organic and Polymeric Materials, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, 152-8552, Japan

TATSUTOSHI SHIODA Department of Organic and Polymeric Materials, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, 152-8552, Japan

MICHI NAKATA Department of Organic and Polymeric Materials, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, 152-8552, Japan

YOICHI TAKANISHI Department of Organic and Polymeric Materials, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, 152-8552, Japan

KEN ISHIKAWA Department of Organic and Polymeric Materials, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, 152-8552, Japan

HIDEO TAKEZOE Department of Organic and Polymeric Materials, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, 152-8552, Japan

MASAMITSU ISHITOBI Sumitomo Chemical Co., Ltd., 6 Kitahara, Tsukuba, 300-3294, Japan

CHIZU SEKINE Sumitomo Chemical Co., Ltd., 6 Kitahara, Tsukuba, 300-3294, Japan

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Abstract

The anisotropy of molecular polarizability Δα of several nematogens has been determined by depolarized Rayleigh light scattering. The experimentally determined values were found to be noticeably smaller than those obtained by MOPAC calculation. Δα values determined from order parameter S and refractive indices show reasonably good agreement with those determined in the present experiment. This result warns us that Δα calculated by MOPAC, particularly at a finite wavelength, may be larger than the true value.

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Experimental determination of molecular polarizability anisotropy of nematogens by depolarized Rayleigh light scattering

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Experimental determination of molecular polarizability anisotropy of nematogens by depolarized Rayleigh light scattering

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