Issue 16, 2015

A highly selective fluorescence sensor for Zn2+ and Cu2+ based on diarylethene with a piperazine-linked amidoquinoline unit

Abstract

A novel asymmetrical diarylethene compound with a piperazine-linked amidoquinoline unit was synthesized and its multi-controllable switching behaviors induced by light and chemical stimuli were investigated in detail. The diarylethene compound was highly selective towards Zn2+ and Cu2+ with different fluorescence signals and binding modes. When triggered by Zn2+, its fluorescence intensity was enhanced evidently and its emission peak was red-shifted from 417 nm to 502 nm with a concomitant color change from light blue to bright green. In contrast, its fluorescence intensity notably decreased accompanied with a color change from light blue to dark when stimulated by Cu2+. The binding affinity of the diarylethene compound to Cu2+ (irreversible) was much higher than to Zn2+ (reversible) with a binding stoichiometry of 1 : 1 to both ions. In addition, its light and metal-responsive fluorescence behavior was applied to the construction of a molecular logic circuit with four inputs and one output.

Graphical abstract: A highly selective fluorescence sensor for Zn2+ and Cu2+ based on diarylethene with a piperazine-linked amidoquinoline unit

Supplementary files

Article information

Article type
Paper
Submitted
31 Jan 2015
Accepted
10 Mar 2015
First published
11 Mar 2015

J. Mater. Chem. C, 2015,3, 4023-4029

Author version available

A highly selective fluorescence sensor for Zn2+ and Cu2+ based on diarylethene with a piperazine-linked amidoquinoline unit

S. Xia, G. Liu and S. Pu, J. Mater. Chem. C, 2015, 3, 4023 DOI: 10.1039/C5TC00315F

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