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Issue 6, 2016
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Conjugated polymer-enhanced enantioselectivity in fluorescent sensing

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Abstract

A new strategy to use conjugated polymers to conduct fluorescent enhancement sensing has been developed. Chiral 1,1′-bi-2-naphthol-based binding sites are linked by p-phenylene units to construct a conjugated polymer whose fluorescence is quenched by the aldehyde groups introduced at each binding site. Interaction of this polymer with chiral amino alcohols in the presence of Zn(II) leads to highly enantioselective fluorescent enhancement. It is found that the chiral conjugated polymer shows greatly enhanced enantioselectivity over the corresponding small molecular sensor under the same conditions. This work provides the first example that a conjugated polymer is used to greatly increase the enantioselectivity of a small molecular sensor in chiral recognition. Simultaneous determination of the concentration and enantiomeric composition of chiral substrates by a fluorescent measurement has been achieved by combining the polymer with salicylaldehyde in the assay.

Graphical abstract: Conjugated polymer-enhanced enantioselectivity in fluorescent sensing

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Supplementary files

Article information


Submitted
19 Jan 2016
Accepted
12 Feb 2016
First published
16 Feb 2016

This article is Open Access
All publication charges for this article have been paid for by the Royal Society of Chemistry

Chem. Sci., 2016,7, 3614-3620
Article type
Edge Article

Conjugated polymer-enhanced enantioselectivity in fluorescent sensing

X. Zhang, C. Wang, P. Wang, J. Du, G. Zhang and L. Pu, Chem. Sci., 2016, 7, 3614
DOI: 10.1039/C6SC00266H

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