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Synthesis of highly luminescent mercaptosuccinic acid‐coated CdSe nanocrystals under atmospheric conditions
Author(s) -
Dong Meiting,
Xu Jingyi,
Liu Shuxian,
Zhou Ying,
Huang Chaobiao
Publication year - 2014
Publication title -
luminescence
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.428
H-Index - 45
eISSN - 1522-7243
pISSN - 1522-7235
DOI - 10.1002/bio.2626
Subject(s) - nanocrystal , luminescence , aqueous solution , molar ratio , selenium , photoluminescence , boron , quantum yield , materials science , quantum dot , inorganic chemistry , chemical engineering , nanotechnology , chemistry , nuclear chemistry , organic chemistry , fluorescence , metallurgy , optoelectronics , catalysis , physics , quantum mechanics , engineering
Here we report a facile one‐pot method for the preparation of high‐quality CdSe nanocrystals (NCs) in aqueous solution under an air atmosphere. Compared with the traditional use of NaHSe or H 2 Se, the more stable sodium selenite is utilized as the Se source for preparing highly luminescent CdSe nanocrystals. By using mercaptosuccinic acid (MSA) as the capping agent and borate–citrate acid as the buffering solution, CdSe nanocrystals with high quantum yield (up to 70%) have been synthesized conveniently. The influence of different experimental parameters, such as the pH of the precursor solution, the molar ratio of Cd 2+ to Na 2 SeO 3 and Cd 2+ to MSA on the CdSe nanocrystals, has been systematically investigated. The prepared CdSe NCs were spherical with a size of ~ 5 nm. Copyright © 2014 John Wiley & Sons, Ltd.