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Synthesis and surface modification of biocompatible water soluble core-shell quantum dots


Citation

Abd. Rahman, Samsulida and Ariffin, Nurhayati and Yusof, Nor Azah and Abdullah, Jaafar and Ahmad Zubir, Zuhana and Nik Abdul Aziz, Nik Mohd Azmi and Azmi, Nur Ellina and Sidek, Hamidah and Ramli, Noor Izaanin (2014) Synthesis and surface modification of biocompatible water soluble core-shell quantum dots. Advanced Materials Research, 879. pp. 184-190. ISSN 1022-6680; ESSN: 1662-8985

Abstract

In this study, the applications of CdSe/ZnS quantum dots (QDs) and its role in advanced sensings has been explored. The CdSe/ZnS was synthesized by using hot injection method with the shell ZnS layer was made using successive ionic layer adsorption and reaction (SILAR) method. The morphology of the CdSe/ZnS QDs was studied using Transmission Electron Microscope (TEM) and the average particle size was in 10-12 nm range. The prepared QDs were optically characterized using spectrofluorescence and strong emission was observed at 620 nm. Comparison of the fluorescence emissions of CdSe/ZnS capped with various capping ligands such as L-cysteine, thioglycolic acid (TGA), mercaptopropionic acid (MPA), mercaptosuccinic acid (MSA) and mercaptoundecanoic acid (MUA) were studied. The CdSe/ZnS capped with TGA gave the strongest fluorescence emission compared to others.


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Additional Metadata

Item Type: Article
Divisions: Faculty of Science
Institute of Advanced Technology
DOI Number: https://doi.org/10.4028/www.scientific.net/AMR.879.184
Publisher: Trans Tech Publications
Keywords: Organic ligand; Quantum dot; Semiconducting nanocrystals; Surface modification
Depositing User: Nurul Ainie Mokhtar
Date Deposited: 19 Jan 2018 08:43
Last Modified: 19 Jan 2018 08:43
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.4028/www.scientific.net/AMR.879.184
URI: http://psasir.upm.edu.my/id/eprint/35573
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