One-step synthesis of size tuned zinc selenide quantum dots via a temperature controlled molecular precursor approach
作者:Young-wook Jun、Ja-Eung Koo、Jinwoo Cheon
DOI:10.1039/b002983l
日期:——
One-step size-controlled synthesis of ZnSe quantumdots is studied and the obtained QDs are luminescent with the emission wavelength varying over a wide range (up to 100 nm) depending on the particle size; the single-molecular precursor is an air-stable bis(phenylselenolato)zinc N,N,N′,N′-tetramethylethylenediamine (TMEDA) complex, which effectively affords different sizes of ZnSe QDs depending on
We describe here an atom efficient procedure to prepare selenol esters in good to excellent yields by reacting [(PhSe)2Zn] or [(PhSe)2Zn]TMEDA with acyl chlorides under “on water” conditions. The method is applicable to a series of aromatic and aliphatic acyl chlorides and tolerates the presence of other functionalities in the starting material.
Coordination Complexes of Zinc with Reactive ESiMe<sub>3</sub> (E = S, Se, Te) Ligands
作者:Marty W. DeGroot、John F. Corrigan
DOI:10.1021/om050088v
日期:2005.7.1
The complexes (N,N'-tmeda)Zn(ESiMe3)(2) (E = S, 1a; E = So, 2a; E = Te, 3a) and (3,5-Me-2-C5H3N)(2)Zn(ESiMe3)(2) (E = S, 1b; E = Se, 2b; E = Te, 3b) have been prepared in high yield by the reaction of E(SiMe3)(2) with (N,N'-tmeda)Zn(OAc)(2) (4a) and (3,5-Me-2-C5H3N)(2)Zn(OAc)(2) (4b), respectively. Complexes 1-3 have been characterized spectroscopically and by means of single-crystal X-ray diffraction. All six complexes exist in the solid state as monomeric species with terminally bonded trimethylsilylchalcogenolate moieties and a distorted tetrahedral geometry of the zinc center.