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金子 文俊*; Radulescu, A.*; 中川 洋
Journal of Applied Crystallography, 56(5), p.1522 - 1527, 2023/10
被引用回数：1 パーセンタイル：60.87(Chemistry, Multidisciplinary)中性子小角散乱(SANS)は、ソフトマターの高次構造を研究するための強力な手法として広く利用されている。複雑な多成分系のSANSプロファイル解析の信頼性を高めるためには、他の手法で得られた異なる種類の構造情報を組み合わせることが望ましい。SANSとフーリエ変換赤外分光法(FTIR)を組み合わせた同時測定システムはこの目的に合致し、特に実験間で構造変化のタイミングを合わせることが困難なターゲットに有効であるが、SANSに適したサンプルは一般的な透過型FTIR測定には厚すぎるという問題点がある。この問題を解決するために、FTIR分光法の減衰全反射サンプリング法を採用した新しい同時測定システムを開発した。
金子 文俊*; 河口 達也*; Radulescu, A.*; 岩瀬 裕希*; 森川 利明*; 高田 慎一; 西浦 正芳*; Hou, Z.*
Review of Scientific Instruments, 90(9), p.093906_1 - 093906_6, 2019/09
被引用回数：3 パーセンタイル：17.59(Instruments & Instrumentation)Small angle neutron scattering (SANS) is a versatile and convenient method to investigate the higher order structure of molecular assembly systems. However, the more complicated a system of interest, the more difficult the interpretation in the SANS profile. In order to increase the reliability of structural analysis on a complicated system, it is desirable to obtain different kinds of structural information from the same sample simultaneously. Polarized infrared spectroscopy is able to provide information about the molecular structure, concentration, and orientation of each chemical species in a system. In order to utilize these advantages of polarized infrared spectroscopy, a simultaneous measurement system was built by incorporating a Fourier transform infrared (FTIR) spectrometer into a time-of-flight small angle neutron scattering instrument covering a wide Q range.
金子 文俊*; Radulescu, A.*; 岩瀬 裕希*; 高田 慎一; 西浦 正芳*; Hou, Z.*
Macromolecular Symposia, 386(1), p.1900008_1 - 1900008_5, 2019/08
被引用回数：0 パーセンタイル：0.14(Polymer Science)Syndiotactic polystyrene (sPS) forms cocrystals with a wide range of chemical species from low-mass molecules to polymeric compounds, such as polyethylene glycols. Although the sPS lattice has been confirmed to accept linear compounds, such as n-alkanes and n-fatty acids, branched molecules have not been regarded as guests until now. To investigate whether sPS can adopt branched molecules as guests, cocrystallization using three types of monoacid triacylglycerols (TAGs) with relatively short acyl chains, tricaprin, trilaurin, and trimyristin has been attempted. Moreover, the sPS films subjected to the guest exchange procedure have been investigated via X-ray diffraction, Fourier transform infrared spectroscopy, and simultaneous small- and wide-angle neutron scattering. The results showed that sPS forms the monoclinic delta clathrate cocrystal with all the three TAGs.
