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Issue 40, 2020
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Two-stage metal ion sensing by through-space and through-bond charge transfer

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Abstract

A highly selective colorimetric and ratiometric “two-stage”/“off–on” type fluorescent probe with an ability to exclude other heavy and transition metal ions has been designed and synthesized. Low concentrations of Fe3+ cause through-space charge transfer which leads to fluorescence quenching exceeds 96%, and a further increase of Fe3+ concentration results in the formation of a complex with the maximum emission peak of 1,3-bis((E)-2-(pyridin-4-yl)vinyl)-2-methoxy benzene (BPVMB) being shifted largely by 100 nm (from 416 to 516 nm), which was examined by fluorescence, absorption detection and femtosecond transient absorption measurements on the basis of intramolecular charge transfer (ICT).

Graphical abstract: Two-stage metal ion sensing by through-space and through-bond charge transfer

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Supplementary files

Article information


Submitted
03 Mar 2020
Accepted
30 Jun 2020
First published
16 Jul 2020

J. Mater. Chem. C, 2020,8, 14028-14036
Article type
Paper

Two-stage metal ion sensing by through-space and through-bond charge transfer

G. Yin, Y. Wang, Y. Yuan, R. Li, R. Chen and H. Wang, J. Mater. Chem. C, 2020, 8, 14028
DOI: 10.1039/D0TC01082K

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