alexa Synthesis Of Glutathione-L-cysteine Co-capped CdTe Core Shell System And Its Antioxidants Properties
ISSN: 2169-0022

Journal of Material Sciences & Engineering
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3rd International Conference on Smart Materials & Structures
March 20-22, 2017 Orlando, USA

Daramola Abiodun Olamide
Walter Sisulu University, South Africa
Posters & Accepted Abstracts: J Material Sci Eng
DOI: 10.4172/2169-0022.C1.062
This paper explains a one-pot green synthesis of type II water soluble glutathione-L-cystein co-capped CdTe core and CdTe/ CdSe core shell QDs using cadmium acetate, potassium tellurite (K2TeO3), sodium borohydride (NaBH4), glutathione and L-cystein as the starting material. The reaction was carried out in a single three-necked flask open to the atmosphere under reflux at 100oC. Their optical properties were characterized by UV-vis absorption spectroscopy and florescence spectroscopy, while their structure and morphology were characterized by transmission electron microscope (TEM), Fourier Transform Infra-Red Spectra (FT-IR) and X-Ray Powder Diffraction (XRD). The effects of different reaction times, pH and mole ratios were varied to determine optimum conditions for synthesis. Compared to CdTe core (564 nm), the core shell (600 nm) demonstrated a drastic shift in wavelength to the red region proving that as extra material had been deposited unto the surface of the core. The 20, 40 and 60 days stability tests conducted proved that core-shell nanoparticles were quite stable compared to the core material. Investigation was also conducted on the total anti-oxidant capacity (TAC) of the material and the results demonstrated some level of significance at 24 and 72 hours of termination as against the control. The statistical analysis showed that little damage was done to the antioxidant defenses in some certain organs of the mice and this shows that the synthesized material has some degree of low cytotoxicity. Since this reaction did not involve the use of a nitrogen atmosphere nor special ligand or buffer solutions; it suggests that the process could be easily operated on an industrial scale and 1 hour is almost the same showing that the QDs are well formed.


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