Thermal Decomposition Mechanism of Single-Molecule Precursors Forming Metal Sulfide Nanoparticles
作者:Yun Ku Jung、Jae Il Kim、Jin-Kyu Lee
DOI:10.1021/ja905353a
日期:2010.1.13
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
合成了几种烷基二硫代氨基甲酸锌 [Zn(S(2)CNR(2))(2)],并研究了它们在烷基胺存在下的热分解,以了解金属硫化物纳米颗粒的形成。主要中间体和副产物在各种条件下分离,并通过 NMR 光谱和 LC-MS 表征。分析结果表明,金属配位胺在高温下对烷基二硫代氨基甲酸酯配体中最缺电子的硫代羰基碳的亲核攻击引发了分解,生成硫脲、硫化氢和固体金属硫化物纳米粒子。从所提出的分解机理出发,研究了胺类在热分解中的作用,并概括了各种金属硫化物纳米粒子的合成方法。