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Directional Mechanochromic Luminescent Behavior in Liquid Crystalline Composite Polymeric Films
Author(s) -
Kondo Mizuho,
Nakanishi Takao,
Matsushita Takumi,
Kawatsuki Nobuhiro
Publication year - 2017
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.201600321
Subject(s) - composite number , materials science , annealing (glass) , luminescence , composite film , grinding , doping , anisotropy , chemical engineering , liquid crystal , liquid crystalline , optoelectronics , photochemistry , polymer chemistry , composite material , optics , chemistry , physics , engineering
The doping of a liquid crystalline (LC) photoemissive compound into a LC polymethacrylate with photoemissive side groups induces repeatable changes in the photoemission wavelength upon mechanical grinding and thermal annealing. The color changes observed in a handwritten pattern demonstrate the successful induction of anisotropic photoemission behavior in a LC composite polymeric film parallel to the grinding direction. The LC characteristics of the composite films play an important role in the directional selectivity of the polarized mechanoinduced color change.