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Fluoride-Triggered ESPT in the Binding with Sal(oph)en

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Abstract

In this paper, anion binding and sensing affinity of the simple and easy-to-make salen, a typical class of ligand used comprehensively in metal coordination, was investigated. Results indicated that salophen was both a colorimetric and fluorescent selective chemosensor for fluoride ion, which operated by the anion-induced conformational changes and subsequently excited-state intramolecular proton transfer (ESPT) process. The F--induced quick response, as well as noticeable optical changes, suggested that anion-sensing mechanism maybe help to design and to synthesize the new preferential selective probes for F-.

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Acknowledgement

We are grateful to National Natural Science Foundation of China (No. 21002069) and Doctoral Science Foundation (No. 52LX26).

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Correspondence to Kai Liu.

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Liu, K., Huo, J., Zhu, B. et al. Fluoride-Triggered ESPT in the Binding with Sal(oph)en. J Fluoresc 22, 1231–1236 (2012). https://doi.org/10.1007/s10895-012-1063-z

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