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A novel fluorescent polymer brushes film as a device for ultrasensitive detection of TNT  
A novel fluorescent polymer brushes film as a device for ultrasensitive detection of TNT
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关键词: Polymer  brushes  Photoluminscence  detection  of  TNT  
资料大小: 544k
所属学科: 功能高分子
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简介:
In this work, we first report the application of fluorescent polymer brushes film as a device for ultrasensitive and selective detection of TNT. As positively charged fluorescent molecules of quaternary ammonium tetraphenylethylene derivatives (d-TPE) were self-assembled on the brushes of poly(acrylic acid) (PAA) by coulomb forces, we obtained a novel fluorescent polymer brushes film with excellent photoluminescent properties, and the emission could be quantitatively and sensitively responsive to 2,4,6-trinitrotoluene (TNT) due to the electron transfer between d-TPE and TNT. The limit of detection of TNT was established to be 0.1 ppb in water. The fluorescent device could also be used repeatedly for TNT detection, which indicated a promising application in trace explosive detection.
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