Thermally induced structural transformation in a hydrogen-bonded supramolecular single-crystal - DSC-FTIR studies

Ishii  D; Yamada  T; Nakagawa  MIyoda  TYoshida  H

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Thermally induced structural transformation in a hydrogen-bonded supramolecular single-crystal - DSC-FTIR studies

机译：Thermally induced structural transformation in a hydrogen-bonded supramolecular single-crystal - DSC-FTIR studies

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摘要

The thermally induced structural transformation of a hydrogen-bonded crystal formed from an amphoteric molecule of 6-[2-methoxy-4-(pyridylazo)phenoxy]hexanoic acid MeO was studied using differential scanning calorimetry (DSC), Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction measurement (XRD). Crystal form of the hydrogen-bonded crystal was measured by single crystal four circle diffractometer (Mo-K-alpha radiation). As a result, the crystal of MeO was stabilized by many C-H center dot center dot center dot O hydrogen bonds, and the C-H center dot center dot center dot O hydrogen bonds were broken by thermal energy reversibly. After transformation the supramolecular architecture was composed of supramolecular polymer including free-rotation pentamethylene main chains.

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来源
《Journal of thermal analysis and calorimetry》 |2006年第3期|681-685|共5页
作者
Ishii D; Yamada T; Nakagawa MIyoda TYoshida H;
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作者单位

Tokyo Inst Technol, Chem Resources Lab, Midori Ku, Yokohama, Kanagawa 2268503, Japan;

Tokyo Metropolitan Univ, Tokyo 1920397, Japan;

JST, CREST, Kawaguchi, Saitama 3320012, Japan;

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正文语种英语
中图分类分析化学;
关键词
amphoteric compound; C-H center dot center dot center dot O; crystal structure; DSC-FTIR; hydrogen bond; rotator phase; structural transition; supramolecular polymer; PHASE;

Thermally induced structural transformation in a hydrogen-bonded supramolecular single-crystal - DSC-FTIR studies

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