Thermo-responsive photoluminescent polymer brushes device as a platform for selective detection of Cr(vi)

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DOIResolve DOI: http://doi.org/10.1039/c3py00669g
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TypeArticle
Journal titlePolymer Chemistry
ISSN1759-9954
Volume4
Issue22
Pages55915596; # of pages: 6
SubjectEnvironmental Monitoring; Fluorescent molecules; Laboratory analysis; Photo-luminescent properties; Photoluminescence intensities; Quaternary ammonium; Selective detection; Thermoresponsive polymer; Chromium compounds; Sensors; Dendrimers
AbstractIn this work, we first report a thermo-responsive photoluminescent polymer brushes device as a platform for the selective and sensitive detection of Cr(vi). Positively charged fluorescent molecules of a quaternary ammonium tetraphenylethylene derivative (d-TPE) are immobilized in the thermo-responsive polymer brushes of p(NIPAM-co-AAc) by Coulombic force, which leads to the observation of an immobilized induced emission (IIE) phenomenon. The emission intensity of the d-TPE labelled film is improved hundreds of times compared with a d-TPE aqueous solution. As a result, we obtain a novel thermo-responsive polymer brushes device with excellent photoluminescent properties. The photoluminescence (PL) intensity of the device exhibits a linear and reversible response from 4 to 60 °C and shows a high PL quenching for the sensitive and selective detection of Cr(vi) rather than Cr(iii). The limit of detection can reach as low as 0.05 ppm, which indicates a promising sensor device for environmental monitoring, laboratory analysis and various other applications. This journal is © The Royal Society of Chemistry.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC); NRC Steacie Institute for Molecular Sciences (SIMS-ISSM)
Peer reviewedYes
NPARC number21269780
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Record identifier1aaacb1b-1fe1-41ac-ba44-dc7dad9f94db
Record created2013-12-13
Record modified2016-05-09
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