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New Silicon‐Containing Polyquinolines: Synthesis, Characterization, and Electroluminescence
Author(s) -
Tonzola Christopher J.,
Alam Maksudul M.,
Jenekhe Samson A.
Publication year - 2005
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.200500001
Subject(s) - electroluminescence , quinoline , polymer , thermal stability , materials science , silicon , polymer chemistry , organic electronics , cyclic voltammetry , alkyl , oled , band gap , side chain , chemistry , organic chemistry , nanotechnology , electrochemistry , optoelectronics , electrode , physics , layer (electronics) , transistor , voltage , quantum mechanics , composite material
Summary: This study reports the synthesis, characterization, and electroluminescent device application of three new silicon‐containing polyquinolines: poly(2,2′‐(bis( p ‐phenyl)diphenylsilane)‐6,6′‐bis(4‐phenyl quinoline)), poly(2,2′‐(bis( p ‐phenyl)octylmethylsilane)‐6,6′‐bis(4‐phenyl quinoline)), and poly(2,2′‐(bis( p ‐phenyl)diphenylsilane)‐6,6′‐bis(4‐hexylquinoline)). The polymers with alkyl side chains were soluble in organic solvents. The new polymers showed robust thermal properties with glass transitions of 161–339 °C. Cyclic voltammetry of the polymers revealed quasi‐reversible reductions with onsets of −1.55 to −1.71 V (vs SCE) and corresponding electron affinities of 2.69–2.85 eV. Organic light‐emitting devices using new polyquinolines as emissive materials showed blue (CIE coordinates = 0.21, 0.20) or blue‐green (0.23, 0.36) electroluminescence with a moderate brightness (≈140 cd · m −2 ) and efficiency (0.04%). The results demonstrate that silicon‐containing polyquinolines are promising n‐type wide band‐gap semiconductors for organic electronics.Structures of new Si‐containing polyquinolines.