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Low-temperature one-step synthesis of covalently chelated ZnO/dopamine hybrid nanoparticles and their optical properties

Published online by Cambridge University Press:  31 January 2011

WeiMin Huang ,
Peng Jiang ,
ChenYang Wei ,
DaKui Zhuang  and
Jianlin Shi
WeiMin Huang
Affiliation:
State Key Lab of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics of Chinese Academy of Sciences, Shanghai 200050, China
Peng Jiang
Affiliation:
State Key Lab of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics of Chinese Academy of Sciences, Shanghai 200050, China
ChenYang Wei
Affiliation:
State Key Lab of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics of Chinese Academy of Sciences, Shanghai 200050, China
DaKui Zhuang
Affiliation:
State Key Lab of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics of Chinese Academy of Sciences, Shanghai 200050, China
Jianlin Shi*
Affiliation:
State Key Lab of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics of Chinese Academy of Sciences, Shanghai 200050, China
*
a)Address all correspondence to this author. e-mail: jlshi@mail.sic.ac.cn
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Abstract

Dopamine covalently chelated ZnO nanoparticles were synthesized by a nonaqueous one-step chemical process at a temperature as low as 60 °C. The formation of ZnO/dopamine hybrid structure was proved by x-ray powder diffraction (XRD), transmission electron microscopy (TEM), and Fourier transform infrared (FTIR) techniques. Detailed absorption, luminescence, and time-resolved decay studies were performed for these ZnO/dopamine hybrid nanoparticles. We observed an enhanced green emission, which could be assigned to a new band-gap emission based on the fast of nanosecond lifetime of the green emission. Our results demonstrated that the change of optical properties of ZnO nanoparticles after covalently chelated by dopamine ligands is closely associated with the formation of new band structure.

Keywords

NanostructureOptical propertiesOxide
Type
Articles
Information
Journal of Materials Research , Volume 23 , Issue 7 , July 2008 , pp. 1946 - 1952
Copyright
Copyright © Materials Research Society 2008

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