Microscopic Structure of Aqueous Solutions Involving Amino Acid Molecules with Different Optical Activities

为了研究具有不同光学活性的氨基酸分子水溶液结构的微观性质，本项目进行了以下结构分析：1）通过TOF和反应堆中子衍射测量在2.5mol%D、L-和L-丙氨酸重水水溶液中的氢键结构。2）部分结构函数（aHH（Q），aXH（Q）和aXX（Q），X：O，C和N）。3）用~ N/~ N和~ H/D同位素取代法研究尿素分子氨基周围的水合结构。4）用中子衍射法研究尿素分子氨基周围的水合结构<14><15>。用中子衍射H/D同位素取代法研究了丙氨酸分子甲基周围的水化结构。5）用^ C/^ C同位素取代法研究了乙酸根离子羧基周围的水化结构<12><13>。

In order to investigate microscopic properties on the structure of aqueous solutions that involve amino acid molecules with different optical activities, following structural analyses have been carried out in this project;1)Hydrogen-bonded structure in aqueous 2.5 mol% D, L-and L-alanine heavy water solutions by means of the TOF and reactor neutron diffraction measurements.2)Determination of partial structure functions (aHH(Q), aXH(Q) and aXX(Q), X: O, C and N) of aqueous 2.5 mol% D, L-and L-alanine solutions studied by neutron diffraction with the H/D isotopic substitution method.3)Hydration structure around the amino group of the urea molecule studied by neutron diffraction with ^<14>N/^<15>N and H/D isotopic substitution methods.4)Hydration structure around the methyl group of the alanine molecule in aqueous solutions studied by neutron diffraction with the H/D isotopic substitution method.5)Hydration structure around the carboxyl group of the acetate ion studied by ^<12>C/^<13>C isotopic substitution method.