Characterization of a chiral low molecular weight gelator in gel state using various circular dichroism methods

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• 作者：Huayan Sun ; Jiaming Qin ; Yi Li ; Baozong Li…
• 关键词：Optical activity ; Circular dichroism ; Self ; assembly
• 刊名：Chemical Research in Chinese Universities
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：33
• 期：1
• 页码：119-121
• 全文大小：
• 刊物主题：Chemistry/Food Science, general; Analytical Chemistry; Inorganic Chemistry; Organic Chemistry; Physical Chemistry;
• 出版者：Jilin University and The Editorial Department of Chemical Research in Chinese Universities
• ISSN：2210-3171
• 卷排序：33

文摘

Circular dichroism(CD) is usually used to study supramolecular chirality. With the development of CD methods, diffuse transmission CD(DTCD) and diffuse reflectance CD(DRCD) have been developed. However, the relationship among CD, DTCD and DRCD has not been well-studied. A chiral low molecular weight gelator was synthesized, which can result in a transparent physical gel in deionized water. The field-emission electron microscopy images show that the gel is able to self-assemble into left-handed helical fibers. The CD and DTCD spectra are almost identical, but they partially differ from the DRCD spectrum. Based on the TD-DFT calculated CD spectrum, the DRCD spectrum is shown to be more accurate.