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Fluorene/Carbazole Alternating Copolymers Tethered with Polyhedral Oligomeric Silsesquioxanes: Synthesis, Characterization, and Electroluminescent Properties
Author(s) -
Xie Nana,
Wang Jinze,
Guo Zhilong,
Chen Guangxin,
Li Qifang
Publication year - 2013
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.201300290
Subject(s) - fluorene , carbazole , electroluminescence , copolymer , thermal stability , materials science , polymer chemistry , photoluminescence , photochemistry , heck reaction , polymerization , polymer , chemistry , alkyl , organic chemistry , nanotechnology , optoelectronics , composite material , layer (electronics) , aryl
A series of novel fluorene/carbazole alternating copolymers tethered with polyhedral oligomeric silsesquioxanes (POSS), which have well‐defined architectures and similar polymerization degrees, are synthesized by the Heck coupling reaction to investigate the effects of the number and the position of POSS on the optoelectronic properties. The introduction of POSS results in blue shifts in the photoluminescence (PL) emission spectra (especially for P2 ) and improved thermal spectral stability. Moreover, an appropriate amount of POSS is beneficial for enhancing the electroluminescent properties, and a better performance is obtained when POSS units are tethered to the 9‐position of the carbazole units, rather than fluorene units. Moreover, POSS facilitates the balance of electron and hole fluxes.