Li Zi-Wei, Tan Bin, Wu Zhao-Feng, Huang Xiao-Ying
State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, The Chinese Academy of Sciences, Fuzhou 350002, China.
College of Chemistry and Materials Science, Fujian Normal University, Fuzhou 350007, China.
Materials (Basel). 2023 Jan 6;16(2):577. doi: 10.3390/ma16020577.
Exploration of sensitive and selective fluorescence sensors towards toxic metal species is of great importance to solve metal pollution issues. In this work, a three-dimensional (3D) strontium coordination polymer of Sr(tcbpe) (Htcbpe = 1,1,2,2-tetrakis(4-(4-carboxy-phenyl)phenyl)ethene) has been synthesized and developed as a fluorescent sensor to Fe ions. Sr(tcbpe) shows a mechanochromic fluorescence with emission shifting from blue of the pristine to green after being ground. Notably, based on a fluorescence quenching mechanism, Sr(tcbpe) displays a sensitive and selective fluorescent sensing behavior to Fe ions with a detection limit of 0.14 mM. Moreover, Sr(tcbpe) exhibits high tolerance to water in a wide pH range (pH = 3-13), demonstrating that Sr(tcbpe) is a potential fluorescent sensor of Fe in water.
探索对有毒金属物种具有灵敏性和选择性的荧光传感器对于解决金属污染问题至关重要。在这项工作中，合成了一种三维（3D）锶配位聚合物Sr(tcbpe)（Htcbpe = 1,1,2,2-四（4-（4-羧基苯基）苯基）乙烯），并将其开发为一种用于检测铁离子的荧光传感器。Sr(tcbpe)呈现机械变色荧光，研磨后发射光从原始的蓝色转变为绿色。值得注意的是，基于荧光猝灭机制，Sr(tcbpe)对铁离子表现出灵敏且选择性的荧光传感行为，检测限为0.14 mM。此外，Sr(tcbpe)在较宽的pH范围（pH = 3 - 13）内对水具有高耐受性，表明Sr(tcbpe)是水中铁的潜在荧光传感器。
