摘要
采用反胶束法制备CdTe量子点。反胶束体系由CdTe前驱体、AOT(丁二酸二异辛酯磺酸钠)、异辛烷组成;CdTe前驱体在水相中以巯基丙酸为稳定剂、按nCd2+:nHTe-:nMPA=3:1:6、pH=9.8的条件合成。考察了反胶束体系中ω(ω=[水]/[表面活性剂])、表面活性剂浓度对合成CdTe量子点的光学性质的影响。试验表明:当AOT的浓度为0.06g.mL-1时,改变ω能合成不同粒径的CdTe量子点,ω从7增加到13荧光发射光谱位移117.2nm。
Quantum Dots were prepared by using reversed micelle.CdTe precursors was formed in aqueous solution with MPA as stabilizer under the following condition： nCd2＋： nHTe-： nMPA=3：1：6,ph=9.8.Reversed Micelle System was formed with AOT,isooctane and CdTe precursors.The impact of ω（ω=/[ surfactant]） and concentration of surfactant on the optical properties of synthesized CdTe quantum dots has been examined.The experiment has found that when the concentration of AOT was 0.06g.mL-1,changing ω can synthesize CdTe quantum dots of different particle diameters;when ω was increased from 7 to 13,fluorescent emission spectra shifted for 117.2nm.
出处
《福建师大福清分校学报》
2012年第5期78-83,共6页
Journal of Fuqing Branch of Fujian Normal University
基金
福建省教育厅科技B类项目(JB11261和JB09242))
