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Luminescent supramolecular polymers: Cd 2+ ‐directed polymerization and properties
Author(s) -
Chen Xuegang,
Ma Liang,
Cheng Yanxiang,
Xie Zhiyuan,
Wang Lixiang
Publication year - 2007
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/pi.2183
Subject(s) - triphenylamine , polymerization , materials science , polymer , thermogravimetric analysis , electroluminescence , terpyridine , monomer , luminescence , photoluminescence , photochemistry , supramolecular polymers , polymer chemistry , supramolecular chemistry , chemistry , nanotechnology , organic chemistry , optoelectronics , layer (electronics) , molecule , metal , metallurgy , composite material
A family of supramolecular polymers was prepared via Cd 2+ ‐directed self‐assembly polymerization of bis(2,2′:6′,2″‐terpyridine)‐based ligand monomers, using oligofluorenes and triphenylamine as bridges under mild conditions. The polymers were fully characterized using thermogravimetric analysis, inherent viscosity, electrochemical measurements, UV‐visible spectroscopy, photoluminescence (PL) and electroluminescence (EL). Polymers with oligofluorenes as spacers exhibited blue emission (434–442 nm) in dimethyl acetamide (DMAc) solution, while polymers with triphenylamine as spacer presented an emission peak at 494 nm in DMAc solution. Complexation polymerization of bis(2,2′:6′,2″‐terpyridine)‐based ligand monomers with cadmium(II) improved fluorescence quantum yields dramatically, and the film PL quantum yields of these polymers were about 0.38–0.54. Single‐layer light‐emitting diodes were fabricated with the configuration indium tin oxide (ITO)/polymer/Ca/Al; the EL showed green emission and the onset voltages of the devices were 8–11 V. Copyright © 2006 Society of Chemical Industry