3 years ago

A Novel Hexanuclear Cd-MOF Exhibiting Dual Mechanisms-triggering Fluorescence Quenching Response toward Fe3+ Ions in DMF

Shi-Xian Xu, Mei-Hui Yu, Yan-Yuan Jia, Long-Sheng Li, Ying-Hui Zhang, Xi Wang
A novel hexanuclear Cd(II) metal-organic framework (1) based on 4-(1H-Pyrazole-4-carboxamido) benzonic acid (H2L) has been synthesized, featuring a three dimensional microporous framework. Notably, 1 shows a unique fluorescence quenching response toward Fe3+ with high selectivity and sensitivity (Stern-Volmer constant KSV = 2.07 × 104 M-1), attributable to the coaction of absorption competition and energy transfer (ET) mechanism. Further spectral analysis indicates that energy transfer mechanism contribute dominantly to the fluorescent quenching of 1.

Publisher URL: http://onlinelibrary.wiley.com/resolve/doi

DOI: 10.1002/ejic.201701290

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