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Synthesis, characterization and photoreaction of photoreactive side‐chain liquid‐crystalline copolymers comprising 2‐benzoylethoxybiphenyl and 3‐methyl‐2‐butenyloxybiphenyl side groups
Author(s) -
Takatani Ken,
Kawatsuki Nobuhiro,
Yamamoto Tohei
Publication year - 1998
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/(sici)1521-3935(19980801)199:8<1759::aid-macp1759>3.0.co;2-p
Subject(s) - copolymer , differential scanning calorimetry , side chain , polymer chemistry , materials science , liquid crystalline , liquid crystal , optical microscope , polymer , scanning electron microscope , composite material , physics , optoelectronics , thermodynamics
Photo‐crosslinkable side‐chain liquid‐crystalline copolymers comprising 2‐benzoylethoxybiphenyl and 3‐methyl‐2‐butenyloxybiphenyl groups were synthesized and characterized. Thermal behavior of the copolymers was determined by differential scanning calorimetry and polarized optical microscopy. All synthesized copolymers were liquid‐crystalline having nematic and/or smectic phases, and their mesomorphic transition temperatures hardly varied with composition of the copolymers. Photochemically crosslinked copolymer films obtained by UV‐irradiation were insoluble in ordinary organic solvents.