【作者】 浦春玲； 施国跃； 朱安伟；

【Author】 Chunling Pu;Guoyue Shi;Anwei Zhu;School of Chemistry and Molecular Engineering, East China Normal University;

【机构】 华东师范大学化学与分子工程学院；

【摘要】 单壁碳纳米管的手性可以由一对手性参数(n,m)来确定。在本工作中,我们以烯丙基葡聚糖凝胶作为固定相,以十二烷基硫酸钠(SDS)作为洗脱剂,设计了单一表面活性剂多柱凝胶色谱法实现对HiPco型混合单壁碳纳米管的手性分离,最终得到了手性参数为(6,5),(7,6),(8,4)的高纯度(90%)的单一手性单壁碳纳米管。碳纳米管具有优异的导电性,但不同手性参数的碳纳米管的电学性能有所差异。故我们将单一手性碳纳米管修饰到玻碳电极上,实现了对多巴(DOPA)对映异构体的电化学手性识别。该工作为发展电化学手性区分其它生物分子提供了新的识别材料与分析方法。更多还原

【Abstract】 The chirality of Single-walled carbon nanotube is determinted by a pair of integers(n, m). In this work, we used allyl dextran gel as stationary phase and sodium dodecyl sulfate(SDS) as eluent, devised a single-surfactant multicolumn gel chromatography method. We isolated 3 major high purity(90%)species from a high-pressure carbon monoxide-grown(HiPco)mixture. Carbon nanotubes have excellent electrical conductivity and the electronic property has slight difference with the change of chiral indices. We could prepare chiral SWCNTs modified electrode and used this electrode recognizing the enantiomers of DOPA. This work establishes a new platform for using electrochemical methods toward the chiral recognition of various biomolecules.更多还原