Aggregation-induced emission enhancement in poly(phenylene-ethynylene)s bearing aniline groups

作者：Liu Yang; Feng Xiao; Shi Jian bing^*; Zhi Jun ge; Tong Bin; Dong Yu ping

来源：Chinese Journal of Polymer Science, 2012, 30(3): 443-450.

DOI：10.1007/s10118-012-1135-1

• Conjugated polymer
• Poly(phenylene ethynylene)s
• Aggregation-induced emission enhancement
• Amino group

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, didn't 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.

• 出版日期2012-5
• 单位北京理工大学