Thermal Decomposition Mechanism of Single-Molecule Precursors Forming Metal Sulfide Nanoparticles

被引：94

作者：

Jung, Yun Ku ^{[1
]}

Kim, Jae Il ^{[1
]}

Lee, Jin-Kyu ^{[1
]}

机构：

[1] Seoul Natl Univ, Dept Chem, Seoul 151747, South Korea

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2010年 / 132卷 / 01期

关键词：

CRYSTAL-STRUCTURE; SECONDARY CARBOXAMIDES; INORGANIC NANOCRYSTALS; CDSE NANOCRYSTALLITES; ZINC-SULFIDE; THIN-FILMS; TRANSAMIDATION; AMINES; GROWTH; CHALCOGENIDES;

D O I：

10.1021/ja905353a

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Several zinc alkyldithiocarbamates [Zn(S2CNR2)(2)] were synthesized, and their thermal decomposition in the presence of alkylamines was studied in order to understand the formation of metal sulfide nanoparticles. The major intermediates and side products were isolated under various conditions and characterized by NMR spectroscopy and LC-MS. The analysis results showed that nucleophilic attack of the metal-coordinated amine on the most electron-deficient thiocarbonyl carbon of the alkyldithiocarbamate ligands at high temperature initiated the decomposition to generate thiourea, hydrogen sulfide, and solid metal sulfide nanoparticles. From the proposed decomposition mechanism, the role of amines in thermolysis was studied, and methods for synthesizing various metal sulfide nanoparticles were generalized. Formation of the desired products was confirmed by carrying out model experiments.

引用

页码：178 / 184

页数：7

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