Issue 38, 2013

A polymeric film probe with a turn-on fluorescence response to hydrogen sulfate ions in aqueous media

Abstract

A new kind of hydrophilic copolymer poly(HEMA-co-VNP) was designed and synthesized by the radical copolymerization of 2-hydroxyethylmethacrylate (HEMA) and 2-{[2-(4-vinylbenzyloxy)naphthalen-1-yl]methyleneamino}-(S)-2-phenylethanol (VNP). The desired copolymer showed a highly selective red-shifted emission and a unique chiroptical response upon HSO4 binding in organic solution. UV-vis and 1H NMR spectroscopic studies revealed that the hydrogen bonding between the imine moiety in the VNP repeating units and HSO4 is crucial for the high selectivity of the receptor to this anion. As expected, the incorporation of HEMA into the polymer matrix endowed the copolymer excellent hydrophilicity, flexibility and good film-forming properties. Thus, high-quality film sensors could be easily fabricated on quartz plates through spin-casting techniques. The resultant polymeric films can recognize HSO4 ions among a series of common anions in aqueous solution with high selectivity and sensitivity. The promising new film probe for HSO4 has distinct characteristics such as a rapid response, enough stability in an aqueous media and practicality.

Graphical abstract: A polymeric film probe with a turn-on fluorescence response to hydrogen sulfate ions in aqueous media

Supplementary files

Article information

Article type
Paper
Submitted
23 May 2013
Accepted
19 Jul 2013
First published
22 Jul 2013

J. Mater. Chem. B, 2013,1, 5014-5020

A polymeric film probe with a turn-on fluorescence response to hydrogen sulfate ions in aqueous media

W. Lu, J. Zhou, K. Liu, D. Chen, L. Jiang and Z. Shen, J. Mater. Chem. B, 2013, 1, 5014 DOI: 10.1039/C3TB20731E

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