A facile low temperature growth of CdTe nanocrystals using novel dithiocarbamate ligands in aqueous solution

Proline dithiocarbamic acid disodium salt (ProDTC) was first explored as a novel ligand, instead of the usual used thiols, for the synthesis of CdTe nanocrystals (NCs). Due to the weak bonding between Cd ions and ProDTC, CdTe NCs show rapid nucleation and growth at much lower temperature (30–50 ᵒC)...

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Main Authors: Chen, Liqin, Yuwen, Lihui, Lu, Haoting, He, Yao, Hu, Mei, Bao, Biqing, Boey, Freddy Yin Chiang, Zhang, Hua, Wang, Lianhui
Format: Article
Language:English
Published: 2012
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Online Access:https://hdl.handle.net/10356/94376
http://hdl.handle.net/10220/8385
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-943762023-07-14T15:53:51Z A facile low temperature growth of CdTe nanocrystals using novel dithiocarbamate ligands in aqueous solution Chen, Liqin Yuwen, Lihui Lu, Haoting He, Yao Hu, Mei Bao, Biqing Boey, Freddy Yin Chiang Zhang, Hua Wang, Lianhui DRNTU::Engineering::Materials Proline dithiocarbamic acid disodium salt (ProDTC) was first explored as a novel ligand, instead of the usual used thiols, for the synthesis of CdTe nanocrystals (NCs). Due to the weak bonding between Cd ions and ProDTC, CdTe NCs show rapid nucleation and growth at much lower temperature (30–50 ᵒC) compared to the traditional synthesis in an aqueous solution. Moreover, faster growth of ProDTC-CdTe NCs under lower pH value was observed, while the thiol-CdTe system has an opposite tendency. The distinct growth kinetics is ascribed to the different complex constants between ProDTC-Cd and thiol-Cd, which has significant influence on the monomer activity. Although the photoluminescence quantum yield (PLQY) of as-prepared NCs was relatively low, it can be easily increased up to about 50% after further treatment of ligand exchange by replacing the surface-binding ProDTC molecules with the mercaptopropionic acid. Accepted version 2012-08-14T04:24:36Z 2019-12-06T18:55:09Z 2012-08-14T04:24:36Z 2019-12-06T18:55:09Z 2010 2010 Journal Article Yuwen, L., Lu, H., He, Y., Chen, L., Hu, M., Bao, B., et al. (2010). A facile low temperature growth of CdTe nanocrystals using novel dithiocarbamate ligands in aqueous solution. J. Mater. Chem., 20, 2788-2793. https://hdl.handle.net/10356/94376 http://hdl.handle.net/10220/8385 10.1039/b924579k en Journal of materials chemistry © 2010 The Royal Society of Chemistry. This is the author created version of a work that has been peer reviewed and accepted for publication by Journal of Materials Chemistry, The Royal Society of Chemistry. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: http://dx.doi.org/10.1039/b924579k. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic DRNTU::Engineering::Materials
spellingShingle DRNTU::Engineering::Materials
Chen, Liqin
Yuwen, Lihui
Lu, Haoting
He, Yao
Hu, Mei
Bao, Biqing
Boey, Freddy Yin Chiang
Zhang, Hua
Wang, Lianhui
A facile low temperature growth of CdTe nanocrystals using novel dithiocarbamate ligands in aqueous solution
description Proline dithiocarbamic acid disodium salt (ProDTC) was first explored as a novel ligand, instead of the usual used thiols, for the synthesis of CdTe nanocrystals (NCs). Due to the weak bonding between Cd ions and ProDTC, CdTe NCs show rapid nucleation and growth at much lower temperature (30–50 ᵒC) compared to the traditional synthesis in an aqueous solution. Moreover, faster growth of ProDTC-CdTe NCs under lower pH value was observed, while the thiol-CdTe system has an opposite tendency. The distinct growth kinetics is ascribed to the different complex constants between ProDTC-Cd and thiol-Cd, which has significant influence on the monomer activity. Although the photoluminescence quantum yield (PLQY) of as-prepared NCs was relatively low, it can be easily increased up to about 50% after further treatment of ligand exchange by replacing the surface-binding ProDTC molecules with the mercaptopropionic acid.
format Article
author Chen, Liqin
Yuwen, Lihui
Lu, Haoting
He, Yao
Hu, Mei
Bao, Biqing
Boey, Freddy Yin Chiang
Zhang, Hua
Wang, Lianhui
author_facet Chen, Liqin
Yuwen, Lihui
Lu, Haoting
He, Yao
Hu, Mei
Bao, Biqing
Boey, Freddy Yin Chiang
Zhang, Hua
Wang, Lianhui
author_sort Chen, Liqin
title A facile low temperature growth of CdTe nanocrystals using novel dithiocarbamate ligands in aqueous solution
title_short A facile low temperature growth of CdTe nanocrystals using novel dithiocarbamate ligands in aqueous solution
title_full A facile low temperature growth of CdTe nanocrystals using novel dithiocarbamate ligands in aqueous solution
title_fullStr A facile low temperature growth of CdTe nanocrystals using novel dithiocarbamate ligands in aqueous solution
title_full_unstemmed A facile low temperature growth of CdTe nanocrystals using novel dithiocarbamate ligands in aqueous solution
title_sort facile low temperature growth of cdte nanocrystals using novel dithiocarbamate ligands in aqueous solution
publishDate 2012
url https://hdl.handle.net/10356/94376
http://hdl.handle.net/10220/8385
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