水溶性量子点的制备及其pH响应性的研究  

Preparation of water-soluble quantum dots and their pH-dependent behavior

作　　者：袁野[1] 何至青 严莉[1] 熊传溪[1] 董丽杰[1] 

机构地区：[1]武汉理工大学材料科学与工程学院,武汉430070

出　　处：《功能材料》2014年第15期15101-15104,15110,共5页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(51273157);教育部新世纪优秀人才支持计划资助项目(NCET-10-0659)

摘　　要：采用1,12-二胺十二烷(DADA)与多层核壳CdSe/CdS/ZnS量子点通过相转移与配体交换技术制备出水溶、荧光性能稳定的QDs/DADA。将其溶解在pH值不同的水溶液中,通过测试发现QDs/DADA水溶液对pH值具有光响应性,其荧光性能随着pH值的增加先增强后减弱。In this paper,due to the unique optical properties,water-soluble CdSe/CdS/ZnS multilayer core shell QDs/DADA with stable fluorescence property were synthesized based on ligand-exchange method between quantum dots and 1,12-Dodecanediamine（DADA）,then were dissolved in aqueous solution of different pH val-ues.The testing results showed that QDs/DADA solution has photoresponse to the pH value,which fluores-cence intensities increased and subsequently decreased gradually with the enhancement of pH values.

关 键 词：量子点 氨基 水溶性 PH 值 

分 类 号：TB383.1[一般工业技术—材料科学与工程]