Conjugated polymer-grafted silica nanoparticles for the sensitive detection of TNT

被引：50

作者：

Feng, Jichang ^{[1
]}

Li, Yang ^{[1
]}

Yang, Mujie ^{[1
]}

机构：

[1] Zhejiang Univ, Dept Polymer Sci & Engn, Minist Educ, Key Lab Macromol Synth & Functionalizat, Hangzhou 310027, Peoples R China

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2010年 / 145卷 / 01期

关键词：

Conjugated polymer; Silica nanoparticle; TNT; Fluorescent chemosensor; CHEMICAL SENSORS; FLUORESCENT; POLYELECTROLYTE; MICROSPHERES; COMPOSITE; SPHERES;

D O I：

10.1016/j.snb.2009.12.056

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Conjugated polymer-grafted silica nanoparticles were prepared by Sonogashira coupling reaction involving a two-step procedure. The resulting conjugated polymer-grafted silica nanoparticles were characterized by infrared spectroscopy, thermogravimetric analysis, transmission electron microscopy, and absorption and fluorescence spectroscopy. The conjugated polymer-grafted silica nanoparticles are highly fluorescent, and the fluorescent response of the nanoparticles of different size towards electron-deficient trinitrotoluene (TNT) was studied by examining how the steady state fluorescence intensity changes with the concentration of TNT. The conjugated polymer-grafted silica nanoparticles show high sensitivity toward TNT, with a detection limit down to 1 mu M. 2009 Elsevier B.V. All rights reserved.

引用

页码：438 / 443

页数：6

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