Multicolor fluorescent switches in gel systems controlled by alkoxyl chain and solvent.
Two simple molecules, 1 and 2 with D-pi-A structure and alkoxyl groups, respectively, were designed and synthesized. Both compounds can gelatinize THF-water and DMSO. And compound 2 forms gel in acetone by ultrasonic stimulus. Interestingly, these gels exhibit aggregation-induced emission (AIE) during the sol-gel phase transformation. Moreover, the molecular self-assembled and photophysical properties can be controlled by the number of the alkoxyl chains and the type of the solvents. For example, 1 has an identical packing model and fluorescent colour in THF-water and DMSO gels. Contrarily, the self-assembly of molecule 2 strongly depends on the solvent. Furthermore, the gel phases of 2 formed in three solvents possess different fluorescent colours. Such as, THF-water gel emits yellow fluorescence, acetone gel has orange emission and red fluorescence appears in DMSO.
Xu
Yue
Y
Test Science Experiment Center, Jilin University, 2699 Qianjin Street, Changchun, 130012, PR China.
Xue
Pengchong
P
Xu
Defang
D
Zhang
Xiaofei
X
Liu
Xingliang
X
Zhou
Huipeng
H
Jia
Junhui
J
Yang
Xinchun
X
Wang
Fengyong
F
Lu
Ran
R