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Synthesis, characterization, and optoelectronic properties of two new polyfluorenes/poly( p ‐phenylenevinylene)s copolymers
Author(s) -
Yu Zongqiang,
Tan Songting,
Zou Yingping,
Fan Benhu,
Yuan Zhuliang,
Li Yongfang
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.24264
Subject(s) - copolymer , materials science , fluorene , pedot:pss , condensation polymer , electroluminescence , thermal stability , polymer chemistry , polymer , oled , glass transition , polyfluorene , chemical engineering , nanotechnology , composite material , layer (electronics) , engineering
Abstract Two novel copolymers of polyfluorenes/poly( p ‐phenylenevinylene)s copolymers with p ‐ tert ‐butyl‐phenylenemethylene groups in the C‐9 position of alternating fluorene unit, poly[1,4‐(2,5‐dibutyloxyl)‐phenyleneviny lene‐ alt ‐9‐( p ‐ tert ‐butyl‐phenylenemethylene)fluorene] and poly[1,4‐(2,5‐dioctyloxyl)‐phenylenevinylene‐ alt ‐9‐( p ‐ tert ‐butyl‐phenylenemethylene)fluorine], have been synthesized via the Heck polycondensation reaction. The synthesized polymers were characterized by FTIR, NMR, DSC, TGA, UV–vis, and PL spectra. The polymers showed high glass transition temperatures and good thermal stability. A polymer light‐emitting diode with the configuration ITO/PEDOT:PSS/P2/Ca/Al has been fabricated. The device emitted a yellow light with a peak wavelength of 578 nm similar to the PL spectra of the copolymer film. A maximal luminance of 534 cd/m 2 was obtained at a driving voltage of 24.5 V. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 102: 3955–3962, 2006