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A novel fluorescent polymer brushes film as a device for ultrasensitive detection of TNT
來源:楊旭東講師個人網(wǎng)站 發(fā)布日期:2016-04-05
作者:Xudong Yang ,Bowen Shen,Yingnan Jiang,Zixi Zhao,Chuanxi Wang, Cheng Ma,Bai Yang,Quan Lin
關(guān)鍵字:Polymer brushes, Photoluminscence, detection of TNT
論文來源:期刊
發(fā)表時間:2012年
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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