配体交换法制备表面功能化的ZnS NPS及其光学性质研究  

Preparation and optical properties of surface functionalized ZnS NPS via ligand exchange

作　　者：高俊芳[1] 周毅[1] 张瑞英[1] 段丽萍[1] 尹冬梅[2] 

机构地区：[1]包头师范学院化学学院,内蒙古包头014030 [2]东北师范大学化学学院,吉林长春130024

出　　处：《河北科技大学学报》2012年第6期488-491,共4页Journal of Hebei University of Science and Technology

基　　金：内蒙古自然科学基金资助项目(2012MS0201);内蒙古自治区高等学校科学研究资助项目(NJ10166)

摘　　要：以ZnS纳米微粒(NPS)和8-羟基喹啉-5-磺酸(H2QS)为原料,通过新颖的配体交换法合成一系列表面功能化的H2QS-ZnS NPS。TEM结果显示,H2QS-ZnS NPS均一分散,没有聚集,粒径与功能化前的ZnS NPS基本一样,为2～4nm。H2QS-ZnS NPS的荧光发射峰在488nm处,其发光效率随着H2QS与ZnS NPS比率的增加而提高,与ZnS NPS的荧光发射峰(420nm处)相比较发生红移且发光效率显著提高,并对其发光机理进行理论分析。A series of Hz QS-ZnS NPS were synthesized from ZnS nanoparticles（NPS） and 8-hydroxyquinoline-5-sulfonie acid （H2 QS） by a novel ligandexchange process. TEM results show that H2 SQ-ZnS NPS are uniformly dispersed wihout aggrega- tion. The H2SQ-ZnS NPS has a diameter of 2-4 nm, the same as that of Zns NPS before functionalization. The fluorescent emission of H2 QS-ZnS NPS is at 488 nm and the luminous efficiency is improved when increasing ratio of H2 SQ to ZnS NPS. As compared with ZnS NPS（420 nm）, the luminous efficiency of H2SQ-ZnS NPS is greatly enhanced and the emission peak has a red shift, its luminous mechanism were theoretical analysised.

关 键 词：ZNS NPS H2QS 配体交换 功能化 荧光 

分 类 号：O63[理学—高分子化学]