Authors
Jun-Feng Wang, Shen-Shen Wang, Qi-Meng Liu, Xiao-Yan Tang, Dong Liu
Published in
Inorganic chemistry. May 30, 2025. Epub May 30, 2025.
Abstract
The structural transformations of coordination polymers not only contribute to structural diversity but also provide design strategies at the molecular level for developing a new generation of smart materials. In this work, a photoinert olefin-containing coordination chain {[Zn(H2O)(5-NO2-1,3-BDC)(3,3'-dpe)]2·H2O}n (1) was prepared by the hydrothermal reaction between Zn(NO3)2·6H2O, 1,2-di(pyridin-3-yl)ethene (3,3'-dpe), and 5-nitro-1,3-benzenedicarboxylic acid (5-NO2-1,3-H2BDC). After replacing the 5-NO2-1,3-H2BDC ligand in the solution of 1 with 5-methyl-1,3-benzenedicarboxylic acid (5-Me-1,3-H2BDC), a unique two-dimensional photoreactive coordination network [Zn(5-Me-1,3-BDC)(3,3'-dpe)]n (2) was formed. When exposed to UV light, 2 can undergo a [2 + 2] photocycloaddition reaction to produce [Zn(5-Me-1,3-BDC)(rctt-3,3'-tpcb)0.5]n (3, 3,3'-tpcb = 1,2,3,4-tetra(pyridin-3-yl)cyclobutane) via single-crystal-to-single-crystal (SCSC) transformation. By replacing the 5-Me-1,3-BDC ligand in the solution of 3 with 5-NO2-1,3-H2BDC, a three-dimensional framework of {[Zn2(5-NO2-1,3-BDC)2(rtct-3,3'-tpcb)]·2H2O}n (4) can be obtained. Accompanied by the in situ solid-state photoreaction, 2 exhibits intriguing photocontrolled fluorescence behavior, making it a promising smart material for applications in fluorescence sensors, super-resolution imaging, and optical anticounterfeiting.
PMID:
40446147
Bibliographic data and abstract were imported from PubMed on 31 May 2025.
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