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Updated: Nov 21, 2025

IridiumIII Luminescent Probe for Detection of the Malarial Protein Biomarker Histidine Rich Protein-II
Published on: July 7, 2015
A terbium(III) lanthanide-organic framework as a selective and sensitive iodide/bromide sensor in aqueous medium
Lan-Jun Liu1, Meng-Yao Zhang2, Qing-Zhong Guo2
1School of Materials Science and Engineering, Wuhan Institute of Technology, Wuhan 430205, China. junfangguo@aliyun.com and School of Civil Engineering and Architecture, Wuhan Institute of Technology, Wuhan 430205, China.
Abstract:
A potent luminescent sensor for the detection of iodide ions was developed based on a terbium(iii)-based lanthanide-organic framework [Tb(cpia)(H2O)2]n·nH2O (1), which was prepared under hydrothermal conditions using the 5-(4-carboxyphenoxy)isophthalic acid (H3cpia) bridging ligand. Compound 1 exhibits superior luminescence quenching behavior towards I- with high sensitivity and selectivity among various anions and shows real-time response. Moreover, the mechanism of the selective luminescence quenching response for I- can be mainly explained by the absorption competition between 1 and I-. According to this quenching mechanism, we find that compound 1 can also detect Br- by adjusting the excitation wavelength. Significantly, this work could serve as a general guidance for the design and synthesis of pollutant sensors.
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