Citation: Yang Liu, Xiao Feng, Jian-bing Shi, Jun-ge Zhi, Bin Tong, Yu-ping Dong. AGGREGATION-INDUCED EMISSION ENHANCEMENT IN POLY(PHENYLENE- ETHYNYLENE)S BEARING ANILINE GROUPS[J]. Chinese Journal of Polymer Science, ;2012, 30(3): 443-450. doi: 10.1007/s10118-012-1135-1 shu

AGGREGATION-INDUCED EMISSION ENHANCEMENT IN POLY(PHENYLENE- ETHYNYLENE)S BEARING ANILINE GROUPS

Received Date: 20 June 2011
Revised Date: 16 August 2011

Fund Project: This work was financially supported by the National Natural Scientific Foundation of China (Nos. 51073026 and 21004004), the Specialized Research Fund for the Doctoral Program of Higher Education of China (Nos. 20091101110031 and 20101101120029) and Excellent Young Scholars Research Fund of Beijing Institute of Technology (No. 2009Y0914).

Poly(phenylene ethynylene)s (P1) with 4-vinylaniline pendant groups were successfully prepared by the Sonogashira coupling polymerization between 1,4-diethynyl-2,5-bis(pentyloxy)benzene and 4-[2-(2,5-dibromophenyl)vinyl]-aniline. In comparison with its analogue P2 without amino group, the emission of P1 is only enhanced by aggregation when adding n-hexane into its THF solution, exhibiting an aggregation-induced emission enhancement (AIEE) effect. When methanol or water instead of hexane was added into THF solution, P1, however, didnt show AIEE. The results indicated that amino groups strengthen the inter-chain and intra-chain interactions in P1 and restrict the non-radiative energy transition. This strategy can provide a platform for developing highly sensitive and efficient bio- and chemosensors.
- Conjugated polymer
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