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Anomalous Optical Anisotropy Induced by Liquid Crystallinity of Poly(2,5‐dialkoxy‐ p ‐phenylenebutadiynylene) Using a Conventional Rubbing Process
Author(s) -
Ozaki M.,
Fujisawa T.,
Fujii A.,
Tong L.,
Yoshino K.,
Kijima M.,
Kinoshita I.,
Shirakawa H.
Publication year - 2000
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/(sici)1521-4095(200004)12:8<587::aid-adma587>3.0.co;2-k
Subject(s) - rubbing , materials science , raman spectroscopy , mesogen , liquid crystal , photoluminescence , crystallinity , polymer , molecule , anisotropy , alkoxy group , crystallography , optics , optoelectronics , composite material , liquid crystalline , organic chemistry , alkyl , physics , chemistry
Uniform molecular alignment of the conducting liquid‐crystal polymer shown has been achieved by means of a simple rubbing technique. Surprisingly, the molecules were found to align themselves so that the alkoxy side chains—not the mesogenic main chain—lie parallel to the rubbing direction. This anomalous alignment was confirmed using Raman, absorption, and photoluminescence spectroscopy.