5 years ago

Self-assembly, AIEE and mechanochromic properties of amphiphilic α-cyanostilbene derivatives

Self-assembly, AIEE and mechanochromic properties of amphiphilic α-cyanostilbene derivatives
A series of amphiphilic α-cyanostilbene derivatives consisting of an α-cyanostilbene rodlike core with lipophilic and flexible alkyl chains at one end and a polar glycerol group at the opposite end have been synthesized and investigated by polarizing microscopy, DSC, X-ray scattering, SEM, UV-vis spectroscopy and photoluminescence measurements. These compounds can self-assemble into liquid crystalline phase sequence of SmA- Colhex/p6mm- CubI/ P m 3 ¯ n in the bulk states and multistimuli responsive organogels in organic solvents. They have reversible photoresponsive properties in solution, liquid crystalline state and gel state. They also show aggregation-induced enhanced emission (AIEE) property, meanwhile, they present excellent mechanochromic behavior and have a good reversibility of fluorescence conversion upon grinding-fuming process.

Publisher URL: www.sciencedirect.com/science

DOI: S0040402017307275

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