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- W2341750260 abstract "利用核磁共振方法研究了辣椒碱-β-环糊精包合物的化学计量比、空间结构信息及其在水溶液中的自扩散系数.通过测定不同浓度比的辣椒碱和β-环糊精混合溶液的1H NMR数据,绘制Job's曲线,辣椒碱和β-环糊精的Job's曲线均在r=0.5处出现拐点.同时测定了该包合物的2D ROESY和DOSY谱图,ROESY谱图中NOE交叉信号出现在辣椒碱的H-1～H-8和β-环糊精的H-3′、H-5′、H-6′之间,DOSY测得β-环糊精和辣椒碱形成包合物前后的表观自扩散系数.结果表明,辣椒碱-β-环糊精包合物的主客体分子的化学计量比为1∶1,辣椒碱分子的异丙基端从β-环糊精的宽口端进入疏水腔,其中H-1～H-8部分在空腔内部,包合物的自扩散系数为2.95×10-10 m2/s." @default.
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- W2341750260 date "2013-01-01" @default.
- W2341750260 modified "2023-09-22" @default.
- W2341750260 title "An NMR Study of Capsaicin/β-cyclodextrin Complex" @default.
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