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  • Thermo-responsive photoluminescent polymer brushes device as a platform for selective detection of Cr(VI)
  • 来源:杨旭东讲师个人网站 2016-04-05
  • 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 thermoresponsive
    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.
  • [来源:中国聚合物网]
  • 了解更多请进入: 杨旭东讲师个人网站
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