Detection of high-energy compounds using photoluminescent silicon nanocrystal paper based sensors

被引：77

作者：

Gonzalez, Christina M. ^{[1
]}

Iqbal, Muhammad ^{[1
]}

Dasog, Mita ^{[1
]}

Piercey, Davin G. ^{[3
]}

Lockwood, Ross ^{[4
]}

Klapoetke, Thomas M. ^{[3
]}

Veinot, Jonathan G. C. ^{[1
,2
]}

机构：

[1] Univ Alberta, Dept Chem, Edmonton, AB T6G 2G2, Canada

[2] NRC Natl Inst Nanotechnol, Edmonton, AB T6G 2M9, Canada

[3] Univ Munich, Dept Chem, D-81377 Munich, Germany

[4] Univ Alberta, Dept Phys, Edmonton, AB T6G 2G2, Canada

来源：

NANOSCALE | 2014年 / 6卷 / 05期

基金：

加拿大自然科学与工程研究理事会; 加拿大创新基金会;

关键词：

CDSE QUANTUM DOTS; NITROAROMATIC EXPLOSIVE DETECTION; FLUORESCENT SENSOR; VISUAL DETECTION; TNT; NANOPARTICLES; SPECTROMETRY; DESORPTION; PROBES; QDS;

D O I：

10.1039/c3nr06271f

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Luminescent silicon nanocrystals (Si-NCs) surface functionalized with dodecyl groups were exposed to solutions of nitroaromatic compounds including nitrobenzene, nitrotoluene, and dinitrotoluene. It was found that Si-NC luminescence was quenched upon exposure to nitroaromatics via an electron transfer mechanism as indicated by Stern-Volmer analysis. This quenching was exploited and a straightforward paper-based Si-NC sensor was developed. This paper motif was found to be sensitive to solution, vapor, and solid phase nitroaromatics, as well as solution borne RDX and PETN.

引用

页码：2608 / 2612

页数：5

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