In this paper, we report the investigation of the interaction between room temperature phosphorescence(RTP) probe, α bromonaphthalene( α BrN), and a series of cholate surfactants using RTP spectroscopy. It was found that intense RTP of α bromonaphthalene can only be induced in aqueous deoxycholate sodium(NaDC) solution. This observation showed that the interior structure of NaDC aggregate was more rigid and efficient in shielding the excited state of α BrN from oxygen quenching. The experiments suggested that the more chiral separation capability of NaDC aggregate of could be due to its more rigid interior structure.
目的:以环糊精及其衍生物为手性选择剂,通过优化缓冲液的浓度、酸度以及采用环糊精的种类和浓度以达到佐米曲坦的基线分离,并将建立方法应用于实际样品的质量控制中。方法:用20mmol·L^(-1)的磷酸二氢钾-磷酸缓冲液,pH=2.0,含有10mmol·L^(-1)羟丙基-β-环糊精(HP-β-CD)的运行液,分离电压为25kV,检测波长226nm。结果:佐米曲坦对映体的分离度达到3.1,本方法可以灵敏检出限量为0.5%的 R 构型光学异构体。结论:方法简便,快速,准确,可有效控制本品中R对映体杂质含量。