Fabrication of amine functionalized CdSe@SiO 2 nanoparticles as fluorescence nanosensor for highly selective and sensitive detection of picric acid
In this work, amino functionalized CdSe-silica core-shell nanoparticles (NH -CdSe@SiO NPs) were constructed as probe to detect picric acid (PA). The CdSe QDs were embedded in SiO nanoparticles and modified with amino groups on the surface. The nitro explosives are electron deficient in nature, which...
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Published in | Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy Vol. 233; p. 118221 |
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Main Authors | , , , , |
Format | Journal Article |
Language | English |
Published |
England
05.06.2020
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Subjects | |
Online Access | Get more information |
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Summary: | In this work, amino functionalized CdSe-silica core-shell nanoparticles (NH
-CdSe@SiO
NPs) were constructed as probe to detect picric acid (PA). The CdSe QDs were embedded in SiO
nanoparticles and modified with amino groups on the surface. The nitro explosives are electron deficient in nature, which will have stronger affinity for amines and resulted in fluorescence quenching of quantum dots. It was proved that this strategy is selective, easy and sensitive enough for sensing PA with a detection limit of 0.5 × 10
M. |
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ISSN: | 1873-3557 |