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Electronic and optical properties of liquid‐crystalline poly( p ‐phenylene vinylene) derivatives and their functional application
Author(s) -
Onoda Mitsuyoshi,
Tada Kazuya,
Ozaki Masanori,
Yoshino Katsumi
Publication year - 2002
Publication title -
electrical engineering in japan
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.136
H-Index - 28
eISSN - 1520-6416
pISSN - 0424-7760
DOI - 10.1002/eej.1122
Subject(s) - materials science , mesogen , electroluminescence , liquid crystal , phenylene , polymer , phase (matter) , texture (cosmology) , band gap , layer (electronics) , side chain , crystallography , liquid crystalline , polymer chemistry , optoelectronics , composite material , organic chemistry , chemistry , image (mathematics) , artificial intelligence , computer science
Poly(2‐methoxy, 5‐(4‐decyloxy‐biphenyl‐4‐′(1,10‐dioxydecane))‐ p ‐phenylene vinylene), MDBD‐PPV, with a long side chain containing alkoxybiphenyl mesogenic unit has been synthesized and its electrical and optical properties have been investigated. This polymer showed a microscopic texture typical to the liquid‐crystalline phase and a sharp X‐ray diffraction peak due to the smectic layer structure. The band gap of MDBD‐PPV in the liquid‐crystalline phase has been estimated to be about 2.3 eV. An electroluminescent (EL) device has been fabricated using this liquid‐crystalline polymer, MDBD‐PPV, as an emissive layer and the polarity effect has been observed in the emission spectra of this EL device. © 2001 Scripta Technica, Electr Eng Jpn, 138(3): 1–8, 2002