A Robust Strontium Coordination Polymer with Selective and Sensitive Fluorescence Sensing Ability for Fe Ions

Overview

Journal Materials (Basel)

Publisher MDPI

Date 2023 Jan 21

PMID 36676316

Authors

Zi-Wei Li

Bin Tan

Zhao-Feng Wu

Xiao-Ying Huang

Affiliations

Soon will be listed here.

Abstract

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.

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