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Triphenylamine-Based N,O-Bidentate BF2 -Enolimine Initiator for Three-Arm Star Polymethacrylates with Dual-State
Dong Yang1, Guangming Tian1, Jianhua Ma1
1Xi'an Key laboratory of Textile Composites, School of Materials Science and Engineering, Xi'an Polytechnic University, Xi'an, 710048, China.
Abstract:
Three-arm star polymethacrylates with dual-phase (solution and solid-state) fluorescent emission have been synthesized via atom transfer radical polymerization (ATRP) using a triphenylamine-derived organboron complex (TAPA-BKI-3Br) as initiator. The as-synthesized three-arm star polymethacrylates exhibited bright emission in both solution and the solid states due to the highly twisted structure and intramolecular charge transfer (ICT) effect of TAPA-BKI core, as well as the steric effect and restriction of intramolecular motions from the polymer arms. And the polymer chains have an important influence on the photophysical behavior of the as-synthesized three-arm star polymethacrylates in the aggregated state.
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