| DOI | Trouver le DOI : https://doi.org/10.1039/c3py00669g |
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| Auteur | Rechercher : Yang, X.; Rechercher : Jiang, Y.; Rechercher : Shen, B.; Rechercher : Chen, Y.; Rechercher : Dong, F.; Rechercher : Yu, K.1; Rechercher : Yang, B.; Rechercher : Lin, Q. |
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| Affiliation | - Conseil national de recherches du Canada. Institut Steacie des sciences moléculaires du CNRC
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| Format | Texte, Article |
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| Sujet | 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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| Résumé | 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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| Date de publication | 2013 |
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| Dans | |
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| Langue | anglais |
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| Publications évaluées par des pairs | Oui |
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| Numéro NPARC | 21269780 |
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| Exporter la notice | Exporter en format RIS |
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| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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| Identificateur de l’enregistrement | 1aaacb1b-1fe1-41ac-ba44-dc7dad9f94db |
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| Enregistrement créé | 2013-12-13 |
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| Enregistrement modifié | 2020-04-22 |
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