"

Cookies ussage consent

Our site saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing our site without changing the browser settings you grant us permission to store that information on your device.

I agree, do not show this message again.

Synthesis of SiO2CdSe nanoparticles: dispersion and optical properties

SHAOJIE CHEN1, QIUYU ZHANG1,* , JUNPING ZHANG1, JUNWEI GU1, HEPENG ZHANG1, QING LIU1, JIAN ZHOU1

Affiliation

  1. Key Laboratory of Space Materials Science and Technology of Ministry of Education, Department of Applied Chemistry, School of Science, Northwestern Polytechnical University, Shaanxi Xi’an, 710129, Chi

Abstract

Uniform SiO2@CdSe nanoparticles were obtained by using electrostatic adsorption of CdSe onto the surface of the monodisperse silica. SiO2@CdSe nanoparticles presented stronger fluorescence intensity compared to that of dispersant coated CdSe nanoparticles ascribe to naked CdSe. Its application as donor or acceptor in a FRET system was also investigated in this work, and the results showed that SiO2@CdSe nanoparticles can act as donor or acceptor in the FRET system. Because of naked CdSe particles, the ability of electron donor or acceptance of SiO2@CdSe nanoparticles was much better than that of dispersant coated CdSe nanoparticles. The mechanism of formation of SiO2@CdSe nanoparticles was also discussed in this paper. The obtained SiO2@CdSe nanoparticles can be dispersed well in ethanol or solid film, resulting in better optical properties compared to that of dispersant coated CdSe nanoparticles..

Keywords

Monodisperse silica, SiO2@CdSe nanoparticle, naked CdSe, dispersion, Optical propertie.

Submitted at: March 10, 2011
Accepted at: April 11, 2011

Citation

SHAOJIE CHEN, QIUYU ZHANG, JUNPING ZHANG, JUNWEI GU, HEPENG ZHANG, QING LIU, JIAN ZHOU, Synthesis of SiO2CdSe nanoparticles: dispersion and optical properties, Journal of Optoelectronics and Advanced Materials Vol. 13, Iss. 4, pp. 359-365 (2011)