ONE-POT SYNTHESIS OF HIGHLY LUMINESCENT CdTe QUANTUM DOTS USING SODIUM TELLURITE AS TELLURIUM SOURCE IN AQUEOUS SOLUTION

A novel technology has been developed for the synthesis of thioglycolic acid (TGA)-capped CdTe quantum dots (QDs) in aqueous medium. The reaction was carried out in air atmosphere with one-pot by using Na2TeO3 to replace Te or Al2Te3. The mechanism for the formation of CdTe QDs is elucidated. The in...

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Auteurs principaux:	WANG,YILIN, LIU,SHENGYAN
Langue:	English
Publié:	Sociedad Chilena de Química 2012
Sujets:	cadmium tellurium quantum dots sodium tellurite photoluminescence
Accès en ligne:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072012000200011
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spelling	oai:scielo:S0717-970720120002000112014-03-10ONE-POT SYNTHESIS OF HIGHLY LUMINESCENT CdTe QUANTUM DOTS USING SODIUM TELLURITE AS TELLURIUM SOURCE IN AQUEOUS SOLUTIONWANG,YILINLIU,SHENGYAN cadmium tellurium quantum dots sodium tellurite photoluminescence A novel technology has been developed for the synthesis of thioglycolic acid (TGA)-capped CdTe quantum dots (QDs) in aqueous medium. The reaction was carried out in air atmosphere with one-pot by using Na2TeO3 to replace Te or Al2Te3. The mechanism for the formation of CdTe QDs is elucidated. The influences of various experimental variables, including refluxing time, pH value, Cd/Te and Cd/TGA molar ratios, on the luminescent properties of the obtained CdTe QDs have been systematically investigated. Furthermore, the obtained QDs were characterized by fourier transform infrared spectra (FTIR), X-ray powder diffraction (XRD) and transmission electron microscopy (TEM), respectively. The results demonstrate that, under the optimized experimental conditions, the obtained CdTe QDs exhibited a narrow photoluminescence band (fwhm33-45 nm) with reproducible room-temperature quantum yields as high as 28 %, the emission color is tunable from green to orange with increasing diameter of QDs.info:eu-repo/semantics/openAccessSociedad Chilena de QuímicaJournal of the Chilean Chemical Society v.57 n.2 20122012-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072012000200011en10.4067/S0717-97072012000200011
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	cadmium tellurium quantum dots sodium tellurite photoluminescence
spellingShingle	cadmium tellurium quantum dots sodium tellurite photoluminescence WANG,YILIN LIU,SHENGYAN ONE-POT SYNTHESIS OF HIGHLY LUMINESCENT CdTe QUANTUM DOTS USING SODIUM TELLURITE AS TELLURIUM SOURCE IN AQUEOUS SOLUTION
description	A novel technology has been developed for the synthesis of thioglycolic acid (TGA)-capped CdTe quantum dots (QDs) in aqueous medium. The reaction was carried out in air atmosphere with one-pot by using Na2TeO3 to replace Te or Al2Te3. The mechanism for the formation of CdTe QDs is elucidated. The influences of various experimental variables, including refluxing time, pH value, Cd/Te and Cd/TGA molar ratios, on the luminescent properties of the obtained CdTe QDs have been systematically investigated. Furthermore, the obtained QDs were characterized by fourier transform infrared spectra (FTIR), X-ray powder diffraction (XRD) and transmission electron microscopy (TEM), respectively. The results demonstrate that, under the optimized experimental conditions, the obtained CdTe QDs exhibited a narrow photoluminescence band (fwhm33-45 nm) with reproducible room-temperature quantum yields as high as 28 %, the emission color is tunable from green to orange with increasing diameter of QDs.
author	WANG,YILIN LIU,SHENGYAN
author_facet	WANG,YILIN LIU,SHENGYAN
author_sort	WANG,YILIN
title	ONE-POT SYNTHESIS OF HIGHLY LUMINESCENT CdTe QUANTUM DOTS USING SODIUM TELLURITE AS TELLURIUM SOURCE IN AQUEOUS SOLUTION
title_short	ONE-POT SYNTHESIS OF HIGHLY LUMINESCENT CdTe QUANTUM DOTS USING SODIUM TELLURITE AS TELLURIUM SOURCE IN AQUEOUS SOLUTION
title_full	ONE-POT SYNTHESIS OF HIGHLY LUMINESCENT CdTe QUANTUM DOTS USING SODIUM TELLURITE AS TELLURIUM SOURCE IN AQUEOUS SOLUTION
title_fullStr	ONE-POT SYNTHESIS OF HIGHLY LUMINESCENT CdTe QUANTUM DOTS USING SODIUM TELLURITE AS TELLURIUM SOURCE IN AQUEOUS SOLUTION
title_full_unstemmed	ONE-POT SYNTHESIS OF HIGHLY LUMINESCENT CdTe QUANTUM DOTS USING SODIUM TELLURITE AS TELLURIUM SOURCE IN AQUEOUS SOLUTION
title_sort	one-pot synthesis of highly luminescent cdte quantum dots using sodium tellurite as tellurium source in aqueous solution
publisher	Sociedad Chilena de Química
publishDate	2012
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072012000200011
work_keys_str_mv	AT wangyilin onepotsynthesisofhighlyluminescentcdtequantumdotsusingsodiumtelluriteastelluriumsourceinaqueoussolution AT liushengyan onepotsynthesisofhighlyluminescentcdtequantumdotsusingsodiumtelluriteastelluriumsourceinaqueoussolution
_version_	1718445464411439104

ONE-POT SYNTHESIS OF HIGHLY LUMINESCENT CdTe QUANTUM DOTS USING SODIUM TELLURITE AS TELLURIUM SOURCE IN AQUEOUS SOLUTION

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