摘要
β-环糊精分子具有多个手性中心。玻碳电极是用碳粉做电导体,用硅油做粘合剂,将β-环糊精修饰石墨粉构成的手性碳糊电极。在β-环糊精和碳粉的混合比为0.25%,粘合剂为硅油,放置时间为70 s,pH值为7.8,最低浓度等最佳条件下,采用循环伏安和微分脉冲的电化学实验方法,实现了对具有手性的D、L-酪氨酸进行区分。这种方法简单,快速,灵敏,为手性分子的识别提供了新的思路。
β-CD molecule is a chiral molecule with several chiral centers.A carbon paste electrode was composed of graphite powder as electrode conductor,and silicone oil as the binder.β-CD was modified on the surface of carbon paste electrode and a chiral electrode was formed.Under optimized experimental conditions of the mixing ratio（0.25%） of graphite powder and β-CD,silicone oil as organic solvent,placing time（70 s）,pH value（7.8）,and lowest concentration,by cyclic voltammograms and differential pulse voltammetry,L-tyrosine was distinguished with D-tyrosine.The method is simple,fast and sensitive.It provides new ideas for identification of chiral molecules.
出处
《沈阳师范大学学报（自然科学版）》
CAS
2011年第3期413-416,共4页
Journal of Shenyang Normal University:Natural Science Edition
基金
国家自然科学基金资助项目(20875063)
辽宁省教育厅资助项目(2004-c022)
沈阳市科技局资助项目(2007-GX-32)
关键词
手性识别
微分脉冲
Β-环糊精
酪氨酸对映体
chiral recognition
differential pulse
β-cyclodextrin
tyrosine enantiomers
