Intermolecular Interactions between Eosin Y and Caffeine Using H-1-NMR Spectroscopy

被引：9
|
作者：
Okuom, Macduff O. [1 ]
Wilson, Mark V. [1 ]
Jackson, Abby [1 ]
Holmes, Andrea E. [1 ]
机构：
[1] Doane Coll, Dept Chem, 1014 Boswell Ave, Crete, NE 68333 USA
来源：
INTERNATIONAL JOURNAL OF SPECTROSCOPY | 2013年
基金：
美国国家科学基金会;
关键词：
D O I：
10.1155/2013/245376
中图分类号：
O433 [光谱学];
学科分类号：
0703 ; 070302 ;
摘要：
DETECHIP has been used in testing analytes including caffeine, cocaine, and tetrahydrocannabinol (THC) from marijuana, as well as date rape and club drugs such as flunitrazepam, gamma-hydroxybutyric acid (GHB), and methamphetamine. This study investigates the intermolecular interaction between DETECHIP sensor eosin Y (DC1) and the analyte (caffeine) that is responsible for the fluorescence and color changes observed in the actual array. Using H-1-NMR, H-1-COSY, and H-1-DOSY NMR methods, a proton exchange from C-8 of caffeine to eosin Y is proposed.
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页数：6
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