功能性CdSe纳米晶的合成及自组装膜光致发光  

Functionalized CdSe Nanocrystals and Their Self-assembled Films:Preparation and Optical Properties

作　　者：郭应臣[1] 卓立宏[1] 黄群增[1] 赵一阳[1] 

机构地区：[1]南阳师范学院化学与制药工程学院,南阳473061

出　　处：《无机化学学报》2008年第8期1316-1319,共4页Chinese Journal of Inorganic Chemistry

基　　金：河南省自然科学基金(No.0611023700);河南省教育厅自科基金(No.2006150019)资助项目

摘　　要：以巯基丙酸(RSH)为稳定剂,采用湿化学法合成了功能性CdSe纳米晶,用XRD、TEM表征其粒度和形貌,用UV-Vis监测成核及成膜过程。结果表明:制得的CdSe近似呈球形,平均粒径为48nm。利用静电自组装法层层组装成CdSe-PDDA复合膜,荧光测试表明:所得CdSe纳米晶自组装复合膜(CdSe-PDDA)的荧光强度随着组装层数的增加而呈线性增强,该复合膜在582nm附近有黄绿色荧光发射。CdSe, a functionalized nanocrystal was synthesized with mercaptopropionic acid （RSH） as a stabilizer by a wet chemical method. The nanocrystals were characterized by XRD and TEM. The nucleation process and film forming process were observed by UV-Vis absorption spectra. The functionalized CdSe nanocrystals were in globular shape and the average diameter was 48 nm. The luminous performance of CdSe-PDDA complex peUicle synthesized by static self-assembly was studied by fluorescence emission spectra. The results show that the luminous performance of complex pellicle, compared with CdSe nanocrystals with a single component, change in a certain degree. The composite membrane has a yellowish green fluorescence-emission at 582 nm.

关 键 词：CDSE 纳米晶 自组装 膜 光致发光 

分 类 号：O472.31[理学—半导体物理]