Issue 19, 2010

Multicolor fluorescent switches in gel systems controlled by alkoxyl chain and solvent

Abstract

Two simple molecules, 1 and 2 with D-π-A structure and alkoxyl groups, respectively, were designed and synthesized. Both compounds can gelatinize THFwater 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 THFwater 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, THFwater gel emits yellow fluorescence, acetone gel has orange emission and red fluorescence appears in DMSO.

Graphical abstract: Multicolor fluorescent switches in gel systems controlled by alkoxyl chain and solvent

Supplementary files

Article information

Article type
Paper
Submitted
07 May 2010
Accepted
06 Jul 2010
First published
11 Aug 2010

Org. Biomol. Chem., 2010,8, 4289-4296

Multicolor fluorescent switches in gel systems controlled by alkoxyl chain and solvent

Y. Xu, P. Xue, D. Xu, X. Zhang, X. Liu, H. Zhou, J. Jia, X. Yang, F. Wang and R. Lu, Org. Biomol. Chem., 2010, 8, 4289 DOI: 10.1039/C0OB00091D

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