title: Highly fluorescent aggregates modulated by surfactant structure and concentration.
abstract: The effects of anionic surfactants on the aggregation-induced emission (AIE) feature of cationic M-silole molecules have been studied. The electrostatic binding of M-silole with the surfactants greatly promotes the aggregation of the mixtures. The M-silole/surfactant aggregates at 1:1 charge ratio exhibit the maximum fluorescence intensity. Excess surfactant molecules will distribute the M-silole molecules into different micelles and weaken the fluorescence. The fluorescence intensity of the mixed M-silole/surfactant aggregates can be effectively modulated by choosing different surfactants. The gemini surfactants display a much stronger ability of enhancing fluorescence intensity than do the single-chain surfactants. Especially, the gemini surfactant with benzene rings shows the best performance in enhancing fluorescence of M-silole due to both the strongest aggregation ability and the pi-pi interaction with M-silole.
authors.affiliation: Key Laboratory of Colloid and Interface Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China.
authors.forename: Defeng
authors.initials: D
authors.lastname: Yu
authors.forename: Qun
authors.initials: Q
authors.lastname: Zhang
authors.forename: Chunxian
authors.initials: C
authors.lastname: Wu
authors.forename: Yingxiong
authors.initials: Y
authors.lastname: Wang
authors.forename: Lihua
authors.initials: L
authors.lastname: Peng
authors.forename: Deqing
authors.initials: D
authors.lastname: Zhang
authors.forename: Zhibo
authors.initials: Z
authors.lastname: Li
authors.forename: Yilin
authors.initials: Y
authors.lastname: Wang