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Polymers 2017, 9(4), 118; doi:10.3390/polym9040118

Pentiptycene-Derived Fluorescence Turn-Off Polymer Chemosensor for Copper(II) Cation with High Selectivity and Sensitivity

1
Department of Chemistry, Binghamton University, State University of New York, Binghamton, NY 13902, USA
2
Department of Chemistry, Augustana University, Sioux Falls, SD 57197, USA
*
Author to whom correspondence should be addressed.
Academic Editor: Po-Chih Yang
Received: 2 March 2017 / Revised: 20 March 2017 / Accepted: 21 March 2017 / Published: 24 March 2017
(This article belongs to the Special Issue Polymers for Chemosensing)
View Full-Text   |   Download PDF [2887 KB, uploaded 24 March 2017]   |  

Abstract

Fluorescent conjugated polymers (FCPs) have been explored for selective detection of metal cations with ultra-sensitivity in environmental and biological systems. Herein, a new FCP sensor, tmeda-PPpETE (poly[(pentiptycene ethynylene)-alt-(thienylene ethynylene)] with a N,N,N′-trimethylethylenediamino receptor), has been designed and synthesized via Sonogashira cross-coupling reaction with the goal of improving solid state polymer sensor development. The polymer was found to be emissive at λmax ~ 459 nm under UV radiation with a quantum yield of 0.119 at room temperature in THF solution. By incorporating diamino receptors and pentiptycene groups into the poly[(phenylene ethynylene)-(thiophene ethynylene)] (PPETE) backbone, the polymer showed an improved turn-off response towards copper(II) cation, with more than 99% quenching in fluorescence emission. It is capable of discriminating copper(II) cation from sixteen common cations, with a detection limit of 16.5 nM (1.04 ppb). View Full-Text
Keywords: fluorescence; conjugated polymers; pentiptycene; chemical sensor; copper sensor fluorescence; conjugated polymers; pentiptycene; chemical sensor; copper sensor
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MDPI and ACS Style

Chen, A.; Wu, W.; Fegley, M.E.A.; Pinnock, S.S.; Duffy-Matzner, J.L.; Bernier, W.E.; Jones, W.E. Pentiptycene-Derived Fluorescence Turn-Off Polymer Chemosensor for Copper(II) Cation with High Selectivity and Sensitivity. Polymers 2017, 9, 118.

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