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Synthesis and properties of novel deep red‐emitting copolymers based on a poly( p ‐phenylenevinylene) derivative
Author(s) -
Li Xianzhen,
Zeng Wenjin,
Xia Yangjun,
Yang Wei,
Cao Yong
Publication year - 2006
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.24919
Subject(s) - copolymer , electroluminescence , materials science , polymer chemistry , stille reaction , polymer , derivative (finance) , band gap , optoelectronics , nanotechnology , composite material , economics , layer (electronics) , financial economics
A series of novel copolymers based on a poly( p ‐phenylenevinylene) (PPV) derivative with different content of narrow band‐gap unit 2,1,3‐benzoselenadiazolevinylene (BSeV) was prepared via Stille coupling reaction. The copolymers emit light from deep red to near‐infrared (NIR) depending on BSeV content in the copolymers. The electroluminescence (EL) emission peaked at 752 nm for the copolymer with the content of 30 mol % BSeV is among the longest reported so far for the PPV polymers. The best device performance is observed for the copolymer with 1 mol % BSeV content with external quantum efficiency (QE ext ) of 0.26% and CIE coordinate 0.65, 0.34 ( x,y ). © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 102: 4321–4327, 2006