摘要
采用紫外-可见光谱和荧光光谱滴定的方法测定了单(6-脱氧-6-苯胺)-β-环糊精(1)、单(6-脱氧-6-乙二胺)-β-环糊精(2)和单[6-氧-(4-苯甲酸)]-β-环糊精(3)在磷酸缓冲溶液中分别与阴离子表面活性剂十二烷基硫酸钠(SDS)和阳离子表面活性剂十二烷基三甲基溴化铵(DTAC)包结配位的稳定常数,并通过二维核磁等手段研究了主-客体之间的键合模式.结果表明,在环糊精的小口端修饰带有不同电荷的取代基,引入静电相互作用的识别位点,能够有效地改变环糊精对于离子型表面活性剂的键合能力,从而实现主体环糊精对于客体分子的选择性识别.
The complex stability constants for the inclusion complexation of mono-（6-anilino-6-deoxy）-β-cyclodextrin（1）,mono-（6-ethylenediamino-6-deoxy）-β-cyclodextrin（2） and mono-[6-O-（4-carboxyl-phenyl）]-β-cyclodextrin（3） with anionic surfactant sodium dodecyl sulfate（SDS） and cationic surfactant dodecyl trimethyl ammonium bromine（DTAC） were determined by means of fluorescence and UV-Vis titrations in phosphate buffer solution,and their binding modes were investigated by 2D NMR spectroscopy.These re-sults indicate that the introduction of different charge groups on the primary face of cyclodextrins can effec-tively change the binding abilities of the modified cyclodextrins towards ionic surfactants,and a high selec-tivity is achieved through the electrostatic interaction between host and guest compounds.
出处
《有机化学》
SCIE
CAS
CSCD
北大核心
2011年第5期762-767,共6页
Chinese Journal of Organic Chemistry
基金
国家重大专项(No.2008ZX05011)资助项目
关键词
环糊精
表面活性剂
光谱滴定
cyclodextrin
surfactant
spectral titration
