Tetraphenylethene-Based Luminescent Metal-Organic Framework for Effective Differentiation of cis/trans Isomers

作者：Xu, Yuan; Tao, Chen-Lei; Yu, Maoxing; Xiong, Yi; Ouyang, Ya-Ni; Liu, Xun-Gao^*; Zhao, Zujin^*

来源：ACS applied materials & interfaces, 2020, 12(31): 35266-35272.

DOI：10.1021/acsami.0c10702

• tetraphenylethene
• luminescent metal-organic framework
• cis/trans differentiation
• sensors

Luminescent metal-organic frameworks (LMOFs) that can effectively differentiate cis/trans isomers are rarely reported. Herein, we report a novel non-interpenetrated pillared-layered LMOF [Zn(HIPA)(BPyTPE)] (1) (BPyTPE = (E)-1,2-diphenyl-1,2-bis(4-(pyridin-4-yl)phenyoethene; HIPA = (5-hydroxyisophthalic acid)) with a high fluorescence quantum yield of 90.1%. The activated 1 exhibits high thermal stability and strong fluorescence in a methanol suspension. The fluorescence of activated 1 can be much more efficiently quenched by transdimethyl-2-butenedioate and trans-2-butene-1,4-diol than cisdimethyl-2-butenedioate and cis-2-butene-1,4-diol, which enables it to differentiate these cis/trans isomers. This interesting LMOF could he a new type of fluorescence sensor to effectively detect cis/trans isomers.

• 单位
  杭州师范大学