Synthesis of Core–Shell Quantum Dots and Their Potential Application View Full Text


Ontology type: schema:Chapter     


Chapter Info

DATE

2013

AUTHORS

Udit Soni , Vikas Arora , Gurpal Singh , Manzoor Hussain , Sameer Sapra

ABSTRACT

We report the synthesis of core–shell CdSe/ZnS, CdSe/CdS, CdSe/CdS/ZnS nanoparticles. Fluorescent properties of these core/shell nanoparticles depends on the type of ions present on the surface of nanoparticles; a cation-rich surface enhances the emission intensity, while an anion-rich surface leads to deterioration of the fluorescence signal. We used this phenomenon for the synthesis of fluorescent and non-fluorescent quantum dots. We synthesized CdSe/S in which the fluorescence emission is completely quenched, and CdSe/S/Cd and CdSe/S/Zn type of core–shell nanoparticles, which exhibit high fluorescence emission. Although various fluorescence sensors for metal cations based on nanoparticles were previously developed, to the best of our knowledge we first explored the potential application of non-fluorescent quantum dots for the detection of cadmium and zinc in organic medium. More... »

PAGES

85-93

Book

TITLE

Advanced Nanomaterials and Nanotechnology

ISBN

978-3-642-34215-8
978-3-642-34216-5

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/978-3-642-34216-5_8

DOI

http://dx.doi.org/10.1007/978-3-642-34216-5_8

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1052205609


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