This paper describes the formation of magnetic and fluorescent nanocomposite particles which consist of superparamagnetic Fe3O4 core, SiO2 shell and organic dye （FITC） coating layer on their surface. The obtained nanocomposites possess typical superparamagnetism and exhibit clear green fluorescence image. And their fluorescence emission is pH-dependent, which would be applied to pH sensing. ？2009 Yu Zhang. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All fights reserved.
Yu ZhangShang Wen Yan GongLu JinShuang Man LiZhong Ping ChenMing MaNing Gu
Highly luminescent water-soluble CdTe quantum dots （QDs） have been synthesized with an electrogenerated precursor. The obtained CdTe QDs can possess good crystallizability, high quantum yield （QY） and favorable stability. Furthermore, a detection system is designed firstly for the investigation of the temperature-dependent PL of the QDs. ？2009 Yu Zhang. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.
Ji Wei LiuYu ZhangCun Wang GeYong Long JinSun Ling HuNing Gu
