Novel dithieno-benzo-imidazole-based Pb2+ sensors: substituent effects on sensitivity and reversibility

Rudrakanta Satapathy; Yen-Hsing Wu; Hong-Cheu Lin

doi:10.1039/C2CC31131C

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Novel dithieno-benzo-imidazole-based Pb²⁺ sensors: substituent effects on sensitivity and reversibility†

Rudrakanta Satapathy,^a Yen-Hsing Wu^a and Hong-Cheu Lin*^a

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* Corresponding authors

^a Department of Materials Science and Engineering, National Chiao Tung University, Hsinchu 30049, Taiwan, ROC
E-mail: linhc@mail.nctu.edu.tw

Abstract

Two novel dithieno-benzo-imidazole-based compounds (M2 and A2) showed remarkable sensitivities towards Pb²⁺ by 12-fold enhancement and 10-fold decay of fluorescence, respectively, in aqueous solutions. Substituent effects of different dithieno-benzo-imidazole-based moieties (M1, M2, A1 and A2) on the quantum yields, fluorescence lifetimes and sensitivities to Pb²⁺ along with the reversibilities by S²⁻ were investigated.

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Article information

DOI: https://doi.org/10.1039/C2CC31131C
Article type: Communication
Submitted: 15 Feb 2012
Accepted: 13 Apr 2012
First published: 16 Apr 2012

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Chem. Commun., 2012,48, 5668-5670

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Novel dithieno-benzo-imidazole-based Pb²⁺ sensors: substituent effects on sensitivity and reversibility

R. Satapathy, Y. Wu and H. Lin, Chem. Commun., 2012, 48, 5668 DOI: 10.1039/C2CC31131C

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Chemical Communications