Highly Stable CdSe/CdS/ZnS Fluorophores in Acidic Environment: Acile Preparation and Modification of Core/shell/shell Nanocrystals

Chemical Research in Chinese Universities ›› 2010, Vol. 26 ›› Issue (6): 871-875.

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Highly Stable CdSe/CdS/ZnS Fluorophores in Acidic Environment: Acile Preparation and Modification of Core/shell/shell Nanocrystals

YUE Yang¹, GE Mei-ying¹, LIU Yan², WU Jie¹, CHEN Ping², LIN Lie², LIU Yu-feng¹, SUN Yan¹, CHEN Xin^1* and DAI Ning^1*

1. National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, P. R. China;
2. Key Laboratory of Opto-electronic Information Science and Technology, Ministry of Education, Institute of Modern Optics, Nankai University, Tianjin 300071, P. R. China

Received:2009-11-25 Revised:2010-03-08 Online:2010-11-25 Published:2010-12-01
Contact: CHEN Xin;DAI Ning E-mail:xinchen@mail.sitp.ac.cn;ndai@mail.sitp.ac.cn
About author:CHEN Xin and DAI Ning. E-mail: xinchen@mail.sitp.ac.cn; ndai@mail.sitp.ac.cn
Supported by:
Supported by the National Natural Science Foundation of China(Nos.20704042, 60508004 and 60225004), the Committee of Science and Technology of Shanghai City, China(Nos.07JC14058 and 0752nm016), the Pujiang Talent Plan of Shanghai City, China(No.07PJ14095) and the Knowledge Innovation Program of Chinese Academy of Sciences.

Abstract

Abstract: We described a facile method for preparing CdSe/CdS/ZnS core/shell/shell nanocrystals from air-stable single source precursors. The single source precursors of cadmium ethylxanthate and zinc ethylxanthate were used to form CdS and ZnS shell layers in octadecene. An efficient modification of CdSe/CdS/ZnS nanocrystals was subsequently performed to obtain hydrophilic nanocrystal fluorophores with good stability in a pH range of 1.6—10.

Key words: Cadmium selenide, Nanocrystal, Photoluminescence, Core/shell nanostructure

YUE Yang, GE Mei-ying, LIU Yan, WU Jie, CHEN Ping, LIN Lie, LIU Yu-feng, SUN Yan, CHEN Xin* and DAI Ning*. Highly Stable CdSe/CdS/ZnS Fluorophores in Acidic Environment: Acile Preparation and Modification of Core/shell/shell Nanocrystals[J]. Chemical Research in Chinese Universities, 2010, 26(6): 871-875.

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Highly Stable CdSe/CdS/ZnS Fluorophores in Acidic Environment: Acile Preparation and Modification of Core/shell/shell Nanocrystals

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