p-Aminobenzoic acid (pABA) sensitization of LaF3:Tb3+ nanoparticles and its applications in the detection of explosive materials

被引：28

作者：

Ghosh, Debasish ^{[1
]}

Luwang, Meitram Niraj ^{[1
]}

机构：

[1] Natl Chem Lab, Chem Engn & Proc Dev Div, Pune 411008, Maharashtra, India

来源：

RSC ADVANCES | 2015年 / 5卷 / 14期

关键词：

METAL-ORGANIC FRAMEWORK; NITROAROMATIC EXPLOSIVES; ENERGY-TRANSFER; BENZOIC-ACID; LANTHANIDE COMPLEXES; ENHANCED EMISSION; LUMINESCENCE; IONS; CHEMOSENSORS; SPECTROSCOPY;

D O I：

10.1039/c4ra15304a

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

This work reports the utilization of water dispersible terbium (Tb3+) doped spherical LaF3 nanoparticles (similar to 5 nm) surface functionalised with p-aminobenzoic acid (pABA) for the detection of aromatic nitro explosives. The functionalised nanoparticles show remarkable sensitivity to a number of highly electron deficient aromatic nitro compounds like picric acid (PA), 2,4,6-trinitrotoluene (TNT), 2,4-dinitrotoluene (2,4-DNT), 2,4-dinitrophenol (2,4-DNP) etc. All of these nitro compounds can be detected easily at ppm level using this luminescence quenching technique whereas in the case of TNT it can detect concentrations as low as 50 ppb. This novel approach of utilising the Tb3+ doped NPs sensitised by pABA has potential application in the detection of explosive materials.

引用

页码：10468 / 10478

页数：11

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