Asymmetric photoreaction of amino acid by using circularly polarized undulator and external magnetic field

利用圆偏振波荡器和外磁场进行氨基酸的不对称光反应

• 批准号: 13640593
• 负责人: HIRAYA Atsunari
• 金额: $ 2.24万
• 依托单位: Hiroshima University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2001
• 资助国家: 日本
• 起止时间: 2001 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-13640593/
• 关键词: Circular polarization; Undulator; Magnetic field; Amino acid; Asymmetric reaction; 磁場効果; 光不斉化反応; アンジェレーター

The helical undulator at the hiroshima synchrotron radiation center was clarified as quasi monochromatic and variable wavelength light source with more than 97 % of circular polarization, about 10^<14> pf photon flux, and therefore was demonstrated as the high performance light source for asymmetric photoreactions. From the region around a pulsar it was demonstrated that helical undulator radiations in the energy range from infrared to hard X-ray are emitted as electrons are accelerated and spiraled by the induced electrie field and strong magnetic field around the pulsar. To determine both the identity and D, L enantiomer composition of amino acids formed by photoreactions, a high performance liquid chromatograph was improved to achieve 10^<-14> mole sensitivity for identification arid 10^<-13> mole for enantiomeric compositionBy using ArF excimer laser or KrCI excimer lamp UV irradiation to aqueous solutions of organic molecules such as amines and amides were carried out. Two types of amino acid formation mechanisms were identified : direct mechanism to form free amino acids and indirect mechanism to farm amino acid precursor that yields amino acids after hydrolysis. Selectivities to form amino acids containing the dame number of carbon atom of the starting organic molecules were also identified. The ratio of the amino acid yield by the direct and that by the indirect mechanism and the propensity rule for the identity of amino acid was found to be sensitive to the presence of ammonia. High resolution massy analysis reveals inclusion of nitrogen heterocycles in amino acid precursbrs

在广岛同步辐射中心的螺旋波荡器被澄清为准单色和可变波长的光源，具有超过97%的圆偏振，约10^<14>pf的光子通量，因此被证明是不对称光反应的高性能光源。从脉冲星周围的区域，它被证明是从红外到硬X射线的能量范围内的螺旋波荡器辐射的电子被加速和螺旋的感应磁场和脉冲星周围的强磁场。为了同时测定光反应生成的氨基酸的种类和D、L对映体组成，改进了高效液相色谱，使<-14>其鉴定灵敏度达到10 μ mol，<-13>对映体组成达到10 μ mol，用ArF准分子激光或KrCl准分子灯紫外照射有机分子如胺和酰胺的水溶液。氨基酸的形成机制有两种：直接形成游离氨基酸的机制和间接形成氨基酸前体的机制。还鉴定了形成含有起始有机分子的相同碳原子数的氨基酸的选择性。氨基酸的直接和间接产率之比以及氨基酸的倾向性规则对氨的存在很敏感。高分辨率质量分析揭示氨基酸前体中包含氮杂环

项目成果

G.Rybalchenko, M.Morita, K.Shirasawa, N.Smolyakov, K.Goto, A.Hiraya: "Observation of circularly polarized radiation from multimode undulator at HiSOR"Problems of Atomic Science and Technology. 1(1). 102-106 (2001)

G.Rybalchenko、M.Morita、K.Shirasawa、N.Smolyakov、K.Goto、A.Hiraya：“在 HiSOR 上观察多模波荡器的圆偏振辐射”原子科学与技术问题。

K.Shirasawa, A.Hiraya, T.Tanaka, H.Kitamura: "Optimization of asymmetric figure-8 undulator as circularly polarized light source"Physical Review Special Topics Accelerators and Beams. 7(020702). 1-5 (2004)

K.Shirasawa、A.Hiraya、T.Tanaka、H.Kitamura：“非对称 8 字波荡器作为圆偏振光源的优化”物理评论专题加速器和光束。

G.Rybalchenko, N.Smolyakov, K.Shirasawa, M.Morita, A.Hiraya: "HiSOR multimode undulator as a circularly polarized light source"Problems of Atomic Science and Technology. 1(1). 96-101 (2001)

G.Rybalchenko、N.Smolyakov、K.Shirasawa、M.Morita、A.Hiraya：“HiSOR 多模波荡器作为圆偏振光源”原子科学与技术问题。

G.Rybalchenko, K.Shirasawa, M.Morita, N.Smolyakov, K.Goto, T.Matsui, A.Hiraya: "Performance and future plan of multimode undulator at HiSOR"Nuclear Instruments and Method A. 467-468(1). 173-176 (2001)

G.Rybalchenko、K.Shirasawa、M.Morita、N.Smolyakov、K.Goto、T.Matsui、A.Hiraya：“HiSOR 多模波荡器的性能和未来计划”核仪器和方法 A. 467-468(1

G.Rybalchenko, K.Shirasawa, M.Morita, N.Smolyakov, K.Goto, T.Matsui, A.Hiraya: "Performance and future plan of multimode undulator at HiSOR"Nuclear Instruments and Method A. 467-468(1). 173-76 (2001)

G.Rybalchenko、K.Shirasawa、M.Morita、N.Smolyakov、K.Goto、T.Matsui、A.Hiraya：“HiSOR 多模波荡器的性能和未来计划”核仪器和方法 A. 467-468(1