Effect of Cu doping on the optical property of green synthesised l-cystein-capped CdSe quantum dots

In the present study, the synthesis of water-soluble copper-doped CdSe nanoparticles (NPs) via a low cost, facile, and environmentally benign method is reported. Simple reagents such as selenium powder, cadmium chloride, and copper sulphate were used as selenium, cadmium, and copper precursor, respe...

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Autores principales:	Oluwafemi Oluwatobi Samuel, Parani Sundararajan, Lebepe Thabang Calvin, Maluleke Rodney
Formato:	article
Lenguaje:	EN
Publicado:	De Gruyter 2021
Materias:	green synthesis quantum dots copper doping photoluminescence Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/bd713707643e42759f6a668653a5bcc0
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spelling	oai:doaj.org-article:bd713707643e42759f6a668653a5bcc02021-12-05T14:10:50ZEffect of Cu doping on the optical property of green synthesised l-cystein-capped CdSe quantum dots2191-955010.1515/gps-2021-0075https://doaj.org/article/bd713707643e42759f6a668653a5bcc02021-11-01T00:00:00Zhttps://doi.org/10.1515/gps-2021-0075https://doaj.org/toc/2191-9550In the present study, the synthesis of water-soluble copper-doped CdSe nanoparticles (NPs) via a low cost, facile, and environmentally benign method is reported. Simple reagents such as selenium powder, cadmium chloride, and copper sulphate were used as selenium, cadmium, and copper precursor, respectively, while l-cysteine was used as a capping ligand without the use of an additional stabiliser. The as-synthesised copper-doped CdSe NPs were characterised using ultraviolet (UV-Vis) absorption and photoluminescence (PL) spectroscopy, Fourier-transform infrared spectroscopy, and transmission electron microscopy. By varying the dopant concentration, the temporal evolution of the optical properties and the shape of the nanocrystals were investigated. The observation and the results showed that the colour of the solution changed rapidly from orange to black, and the PL shifted to a longer wavelength at the high dopant concentration. The micrographic images revealed that the as-synthesised materials are small and could be used for bio labelling.Oluwafemi Oluwatobi SamuelParani SundararajanLebepe Thabang CalvinMaluleke RodneyDe Gruyterarticlegreen synthesisquantum dotscopperdopingphotoluminescenceChemistryQD1-999ENGreen Processing and Synthesis, Vol 10, Iss 1, Pp 805-810 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	green synthesis quantum dots copper doping photoluminescence Chemistry QD1-999
spellingShingle	green synthesis quantum dots copper doping photoluminescence Chemistry QD1-999 Oluwafemi Oluwatobi Samuel Parani Sundararajan Lebepe Thabang Calvin Maluleke Rodney Effect of Cu doping on the optical property of green synthesised l-cystein-capped CdSe quantum dots
description	In the present study, the synthesis of water-soluble copper-doped CdSe nanoparticles (NPs) via a low cost, facile, and environmentally benign method is reported. Simple reagents such as selenium powder, cadmium chloride, and copper sulphate were used as selenium, cadmium, and copper precursor, respectively, while l-cysteine was used as a capping ligand without the use of an additional stabiliser. The as-synthesised copper-doped CdSe NPs were characterised using ultraviolet (UV-Vis) absorption and photoluminescence (PL) spectroscopy, Fourier-transform infrared spectroscopy, and transmission electron microscopy. By varying the dopant concentration, the temporal evolution of the optical properties and the shape of the nanocrystals were investigated. The observation and the results showed that the colour of the solution changed rapidly from orange to black, and the PL shifted to a longer wavelength at the high dopant concentration. The micrographic images revealed that the as-synthesised materials are small and could be used for bio labelling.
format	article
author	Oluwafemi Oluwatobi Samuel Parani Sundararajan Lebepe Thabang Calvin Maluleke Rodney
author_facet	Oluwafemi Oluwatobi Samuel Parani Sundararajan Lebepe Thabang Calvin Maluleke Rodney
author_sort	Oluwafemi Oluwatobi Samuel
title	Effect of Cu doping on the optical property of green synthesised l-cystein-capped CdSe quantum dots
title_short	Effect of Cu doping on the optical property of green synthesised l-cystein-capped CdSe quantum dots
title_full	Effect of Cu doping on the optical property of green synthesised l-cystein-capped CdSe quantum dots
title_fullStr	Effect of Cu doping on the optical property of green synthesised l-cystein-capped CdSe quantum dots
title_full_unstemmed	Effect of Cu doping on the optical property of green synthesised l-cystein-capped CdSe quantum dots
title_sort	effect of cu doping on the optical property of green synthesised l-cystein-capped cdse quantum dots
publisher	De Gruyter
publishDate	2021
url	https://doaj.org/article/bd713707643e42759f6a668653a5bcc0
work_keys_str_mv	AT oluwafemioluwatobisamuel effectofcudopingontheopticalpropertyofgreensynthesisedlcysteincappedcdsequantumdots AT paranisundararajan effectofcudopingontheopticalpropertyofgreensynthesisedlcysteincappedcdsequantumdots AT lebepethabangcalvin effectofcudopingontheopticalpropertyofgreensynthesisedlcysteincappedcdsequantumdots AT malulekerodney effectofcudopingontheopticalpropertyofgreensynthesisedlcysteincappedcdsequantumdots
_version_	1718371687126269952

Effect of Cu doping on the optical property of green synthesised l-cystein-capped CdSe quantum dots

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