title: Synthesis of highly luminescent mercaptosuccinic acid-coated CdSe nanocrystals under atmospheric conditions.
abstract: 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 H2 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 Na2 SeO3 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.
authors.affiliation: College of Chemistry and Life Science, Zhejiang Normal University, Jinhua, 321004, Zhejiang, People's Republic of China.
authors.forename: Meiting
authors.initials: M
authors.lastname: Dong
authors.forename: Jingyi
authors.initials: J
authors.lastname: Xu
authors.forename: Shuxian
authors.initials: S
authors.lastname: Liu
authors.forename: Ying
authors.initials: Y
authors.lastname: Zhou
authors.forename: Chaobiao
authors.initials: C
authors.lastname: Huang
mesh_terms: D000388:Air; D001272:Atmosphere / Q000737:chemistry*; D019187:Cadmium Compounds / Q000737:chemistry*; D049449:Luminescence; D008163:Luminescent Measurements; D053758:Nanoparticles / Q000737:chemistry*; D018036:Selenium Compounds / Q000737:chemistry*; D012996:Solutions; D013056:Spectrophotometry, Ultraviolet; D013870:Thiomalates / Q000737:chemistry*; D014867:Water / Q000737:chemistry
chemical_list: D019187:Cadmium Compounds; D018036:Selenium Compounds; D012996:Solutions; D013870:Thiomalates; D014867:Water; C046062:2-thiomalic acid; C058667:cadmium selenide
keywords: cadmium selenide; mercaptosuccinic acid (MSA); nanocrystals (NCs)