巯基琥珀酸包被的CdTe量子点的制备及其对毕赤酵母生长的影响  

Preparation of CdTe Quantum Dots with MSA and Its Influennce for Pichia pastoris

作　　者：宋有涛[1,2] 王莹[1] 李辉[1] 董微[3] 孙晓霞[1] 

机构地区：[1]辽宁大学生命科学院,辽宁沈阳110036 [2]辽宁大学环境学院,辽宁沈阳110036 [3]沈阳医学院化学教研室,辽宁沈阳110034

出　　处：《辽宁大学学报（自然科学版）》2013年第1期72-75,共4页Journal of Liaoning University：Natural Sciences Edition

基　　金：国家自然科学基金(30970152);辽宁省教育厅优秀人才项目(2009R26)

摘　　要：以巯基琥珀酸作为稳定剂,合成CdTe量子点.通过荧光发射光谱、紫外吸收光谱对其荧光性能进行表征,结果表明在505 nm左右出现明显的特征吸收峰,在551 nm处出现一个很强的发射峰.实验又以毕赤酵母为指示生物,考察了毕赤酵母与CdTe量子点共培养后的生长曲线,结果表明CdTe量子点须控制在一定浓度(5.1μmol/L)范围内,对毕赤酵母的生长影响不大.CdTe quantum dots(QDs) were prepared with mercapto succinic acid(MSA) as the stabilizing agent.Their fluorescent properties were characterized by fluorescence spectroscopy and UV absorption.The study result illustrated CdTe QDs received a obvious characteristic absorption peak at about 505 nm,and a strong emission peak at 551nm.By using Pichia pastoris as a indicator organism,we investigated the dependence of yeast's growth on the concentration of CdTe QDs.The study result illustrated CdTe QDs had little effect on the growth of Pichia pastoris only be controlled at a very low concentration(5.1 μmol/L).

关 键 词：巯基琥珀酸 CDTE量子点 毕赤酵母 影响 

分 类 号：Q935[生物学—微生物学]