CAJ | 학술논문

运用X射线光电子能谱(XPS)的ESCA扫描技术研究了蛋氨酸与不同化学增感剂相互作用及其中的硫、金、碳和氧等元素的化学形态和相对含量的变化规律.发现蛋氨酸与不同的化学增感剂的反应机理是不尽相同的.蛋氨酸与S增感剂不会发生任何化学反应，它们可以稳定地共存于同一体系之中；蛋氨酸可以将全部Au3＋增感剂还原为Au，其自身部分被氧化为蛋氨酸亚砜，并且在其脱质子的羟基部位与Au形成Au-O-C结构的金属配合物.向蛋氨酸体系中加入S＋Au增感剂后，体系中的氧化还原反应发生在外加的Au3＋和S2O32－之间，此时蛋氨酸的作用是将被S增感剂还原的Au络合，亦形成Au-O-C结构的配合物.
운용X사선광전자능보(XPS)적ESCA소묘기술연구료단안산여불동화학증감제상호작용급기중적류、금、탄화양등원소적화학형태화상대함량적변화규률.발현단안산여불동적화학증감제적반응궤리시불진상동적.단안산여S증감제불회발생임하화학반응，타문가이은정지공존우동일체계지중；단안산가이장전부Au3＋증감제환원위Au，기자신부분피양화위단안산아풍，병차재기탈질자적간기부위여Au형성Au-O-C결구적금속배합물.향단안산체계중가입S＋Au증감제후，체계중적양화환원반응발생재외가적Au3＋화S2O32－지간，차시단안산적작용시장피S증감제환원적Au락합，역형성Au-O-C결구적배합물.
The changes of the chemical states and the relative contents of sulfur,gold,carbon and oxygen after methionine reacted with different chemical sensitizers are studied by ESCA scanning technique of X-ray Photoelectron Spectroscopy(CPS).The results indicated that the interaction mechanism of methionine reacted with different chemical sensitizers is not identical.Any oxidation-reduction reaction did not occurred between methionine and sulfur sensitizer,they could coexist steadily in the same system.The methionine was oxidized to methionine sulfoxide,in the same time reducing Au3＋ to gold atom.The hydroxy of methionine could coordinate Au,forming Au-O-C coordinate metal complex.After S+Au sensitizers had been immersed into methionine system,oxidation-reduction reaction occurred between added thiosulfate and Au3＋,methionine could coordinate Au which was reduced by sulfur sensitizer,also forming Au-O-C coordinate metal complex.