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コヒーレントテラヘルツ光源によるグルタミン酸およびトレオニンのカイラリティー識別

コヒーレントテラヘルツ光源によるグルタミン酸およびトレオニンのカイラリティー識別

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カテゴリ: 論文誌(論文単位)

グループ名: 【C】電子・情報・システム部門

発行日: 2014/04/01

タイトル(英語): Discrimination of Chirality of Glutamic Acid and Threonine by using Coherent Terahertz Light Source

著者名: 中村 悠太(東北大学大学院工学研究科知能デバイス材料学専攻),中田 有紀(東北大学大学院工学研究科知能デバイス材料学専攻),中嶋 かおり(東北大学大学院工学研究科知能デバイス材料学専攻),田邉 匡生(東北大学多元物質科学研究所),小山 裕(東北大学大学院工学研究科知能デバイス材料学専攻)

著者名(英語): Yuta Nakamura (Dep. Material Science and Engineering, Graduate School of Engineering, Tohoku University), Yuki Nakata (Dep. Material Science and Engineering, Graduate School of Engineering, Tohoku University), Kaori Nakajima (Dep. Material Science and Engineering, Graduate School of Engineering, Tohoku University), Tadao Tanabe (Institute of Multidisciplinary Research for Advanced Materials, Tohoku University), Yutaka Oyama (Dep. Material Science and Engineering, Graduate School of Engineering, Tohoku University)

キーワード: テラヘルツ,カイラリティー,円二色性分光法  terahertz,chirality,circular dichroism spectroscopy

要約(英語): Many biomolecular compounds used for medical supplies possess the chiral property of L- and D-form (enantiomers). Different points of chirality are optical activity, bioactivity and circular dichroism. So, there is necessity to discriminate chirality with the objective of application to medical production line. In this study, we discriminate chirality of amino acids as one of the biomolecular compound materials by terahertz vibrational circular dichroism (THz-VCD) spectroscopy for the novel discrimination method.The inspection target materials of this study were glutamic acid and threonine. THz-VCD spectra were measured with a frequency tunable THz light source based on difference frequency generation from a GaP crystal. These spectra were obtained by right-hand and left-hand circular polarized THz wave which were converted by quarter-wave plate from linear polarized THz light around 2 THz. As a result, there are expected differences in those absorbance between right and left circular polarized light. For both glutamic acid and threonine, the absorption difference of D-form has shown positive value, in contrast that the absorbance of L-form is negative value. These results indicate that it is possible to discriminate chirality by THz-VCD spectroscopy.

本誌: 電気学会論文誌C(電子・情報・システム部門誌) Vol.134 No.4 (2014) 特集:量子ビームによるナノバイオ物理応用技術

本誌掲載ページ: 484-488 p

原稿種別: 論文/日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejeiss/134/4/134_484/_article/-char/ja/

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