Mechanistic Study of the Synthesis of CdSe Nanocrystals: Release of Selenium

被引：52

作者：

Garcia-Rodriguez, Raul ^{[1
]}

Liu, Haitao ^{[1
]}

机构：

[1] Univ Pittsburgh, Dept Chem, Pittsburgh, PA 15260 USA

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2012年 / 134卷 / 03期

基金：

美国国家科学基金会;

关键词：

LIGHT-EMITTING-DIODES; BASIS-SETS; CARBOXYLIC-ACIDS; GROWTH-KINETICS; REAGENTS; MONODISPERSE; NUCLEATION; THERMOCHEMISTRY; ESTERIFICATION; INSIGHTS;

D O I：

10.1021/ja209246z

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We outline a reaction pathway for the cleavage of the P=Se bond in trialkylphosphine selenide during the synthesis of CdSe nanocrystals. The reaction between cadmium carboxylate and trimethylphosphine selenide in the presence of an alcohol produces alkoxytrimethylphosphonium (2). Control experiments and density functional theory calculations suggested that the cleavage of the P=Se bond is initiated by nucleophilic attack of carboxylate on a Cd2+-activated phosphine selenide to produce an acyloxytrialkylphosphonium intermediate (1), which is converted to 2 in the presence of an alcohol.

引用

页码：1400 / 1403

页数：4

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