期刊
ANALYTICAL CHEMISTRY
卷 81, 期 11, 页码 4548-4550出版社
AMER CHEMICAL SOC
DOI: 10.1021/ac9005777
关键词
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资金
- Engineering and Physical Sciences Research Council [EP/D05592X, EP/E057888/1, EP/E05899X]
- Givaudan Strategic Research Fund
- EPSRC [EP/E057888/1, EP/E05899X/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/E057888/1, EP/E05899X/1] Funding Source: researchfish
Diffusion-ordered NMR spectroscopy (DOSY) is a useful tool for the identification of mixture components. In its basic form it relies on simple differences in hydrodynamic radius to distinguish between different species. This can be very effective where species have significantly different molecular sizes, but generally fails for isomeric species. The use of surfactant co-solutes can allow isomeric species to be distinguished by virtue of their different degrees of interaction with micelles or reversed micelles. The use of micelle-assisted DOSY to resolve the NMR spectra of isomers is illustrated for the case of the three dihydroxybenzenes (catechol, resorcinol, and hydroquinone) in aqueous solution containing sodium dodecyl sulfate micelles, and in chloroform solution containing AOT reversed micelles.
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