DOI | Resolve DOI: https://doi.org/10.1039/c3py00669g |
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Author | Search for: Yang, X.; Search for: Jiang, Y.; Search for: Shen, B.; Search for: Chen, Y.; Search for: Dong, F.; Search for: Yu, K.1; Search for: Yang, B.; Search for: Lin, Q. |
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Affiliation | - National Research Council of Canada. NRC Steacie Institute for Molecular Sciences
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Format | Text, Article |
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Subject | Environmental Monitoring; Fluorescent molecules; Laboratory analysis; Photo-luminescent properties; Photoluminescence intensities; Quaternary ammonium; Selective detection; Thermoresponsive polymer; Chromium compounds; Sensors; Dendrimers |
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Abstract | In 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. |
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Publication date | 2013 |
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In | |
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Language | English |
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Peer reviewed | Yes |
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NPARC number | 21269780 |
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Export citation | Export as RIS |
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Report a correction | Report a correction (opens in a new tab) |
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Record identifier | 1aaacb1b-1fe1-41ac-ba44-dc7dad9f94db |
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Record created | 2013-12-13 |
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Record modified | 2020-04-22 |
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