Synthesis and Characterizations of Triphenylamine End-Functionalized Polymers via Reversible Addition-FragmentationChain Transfer Polymerization

A novel reversible addition-fragmentation chain transfer (RAFT) reagent bearing triphenylamine (TPA) group, 4-diphenylamino-dithiobenzoic acid benzyl ester (DDABE), was designed and synthesized. It was used in the RAFT polymerizations of styrene (St) and methyl acrylate (MA) to prepare end-functiona...

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Bibliographic Details
Published in:Polymer bulletin (Berlin, Germany) Germany), 2008-09, Vol.61 (3), p.287-297
Main Authors: Fu, Junwei, Zhang, Zhengbiao, Cheng, Zhenping, Zhu, Jian, Zhang, Wei, Zhu, Xiulin
Format: Article
Language:English
Subjects:
Addition polymerization
Chain transfer
Chemical synthesis
Dithiobenzoic acid
Molecular weight distribution
NMR
Nuclear magnetic resonance
Polymers
Reagents
Spectra
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Summary:A novel reversible addition-fragmentation chain transfer (RAFT) reagent bearing triphenylamine (TPA) group, 4-diphenylamino-dithiobenzoic acid benzyl ester (DDABE), was designed and synthesized. It was used in the RAFT polymerizations of styrene (St) and methyl acrylate (MA) to prepare end-functionalized polymers. The results of the polymerization showed that the RAFT polymerizations could be well controlled using DDABE as the RAFT agent. Number-average molecular weight (Mn,GPC) increased linearly with monomer conversion, and molecular weight distributions were relatively narrow (PDI< 1.50). The results of chain-extension reaction, 1H NMR spectra and UV/Vis spectra confirmed that most of the polymers chains were end-capped by the functional triphenylamine (TPA) groups. The effect of feed molar ratios of St/DDABE/AIBN on polymerization was investigated.
ISSN:0170-0839
1436-2449
DOI:10.1007/s00289-008-0953-3