期刊
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
卷 395, 期 4, 页码 1033-1046出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s00216-009-3012-5
关键词
Liquid-liquid interface; Interfacial aggregation; Optical chirality; Centrifugal liquid membrane method; Porphyrin and phthalocyanine
资金
- Ministry of Education, Culture, Sports, Science and Technology, Japan
Some new experimental methods for measuring the optical chirality of molecular aggregates formed at liquid-liquid interfaces have been reviewed. Chirality measurements of interfacial aggregates are highly important not only in analytical spectroscopy but also in biochemistry and surface nanochemistry. Among these methods, a centrifugal liquid membrane method was shown to be a highly versatile method for measuring the optical chirality of the liquid-liquid interface when used in combination with a commercially available circular dichroism (CD) spectropolarimeter, provided that the interfacial aggregate exhibited a large molar absorptivity. Therefore, porphyrin and phthalocyanine were used as chromophoric probes of the chirality of itself or guest molecules at the interface. A microscopic CD method was also demonstrated for the measurement of a small region of a film or a sheet sample. In addition, second-harmonic generation and Raman scattering methods were reviewed as promising methods for detecting interfacial optical molecules and measuring bond distortions of chiral molecules, respectively.
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