A Synthetic Method for Transition-Metal Chalcogenide Nanocrystals

A facile wet route was applied to prepare a series of chalcogenide semiconductor nanocrystals (see figure) in controllable shapes and sizes, while a general bottom‐up approach was adopted to transform these cyclohexane‐soluble monodisperse nanocrystals into water‐soluble colloidal spheres. In this p...

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Bibliographic Details
Published in:Chemistry : a European journal 2009-02, Vol.15 (8), p.1870-1875
Main Authors: Wang, Ding-Sheng, Zheng, Wen, Hao, Chen-Hui, Peng, Qing, Li, Ya-Dong
Format: Article
Language:English
Subjects:
chalcogens
colloids
nanostructures
semiconductors
transition metals
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Summary:A facile wet route was applied to prepare a series of chalcogenide semiconductor nanocrystals (see figure) in controllable shapes and sizes, while a general bottom‐up approach was adopted to transform these cyclohexane‐soluble monodisperse nanocrystals into water‐soluble colloidal spheres. In this paper, we prepared a series of chalcogenide semiconductor nanocrystals in controllable shape and size via a facile wet route using metal nitrates and sulfur or selenium powder as precursors and octadecylamine (ODA) as solvent. The as‐obtained chalcogenides included CdS, MnS, Ag2S, PbS, Cu1.8S, Bi2S3, ZnS, ZnxCd1−xS, as well as Ag2Se, Cu2−xSe, CdSe, MnSe. Furthermore, these cyclohexane‐soluble monodisperse nanocrystals were assembled to water‐soluble colloidal spheres and the adjustment of assembly orderliness has been achieved by controlling the experimental parameters. The general synthesis and assembly of chalcogenide semiconductors provide ideal building blocks for various potential applications. A facile wet route was applied to prepare a series of chalcogenide semiconductor nanocrystals (see figure) in controllable shapes and sizes, while a general bottom‐up approach was adopted to transform these cyclohexane‐soluble monodisperse nanocrystals into water‐soluble colloidal spheres.
ISSN:0947-6539
1521-3765
DOI:10.1002/chem.200801815