β-环糊精对金属硫氰酸根络阴离子-碱性染料作用机理的探讨  

An Approach to the Mechanism of the Effect of β-Cyclodextrin on Metal Thiocyanate-Basic Dye System in the Presence of Arabic Gum

作　　者：黄辰龙 戚文彬[2] 

机构地区：[1]温州医学院 [2]杭州大学化学系,杭州310028

出　　处：《分析试验室》1990年第6期1-4,共4页Chinese Journal of Analysis Laboratory

基　　金：国家自然科学基金资助的课题

摘　　要：用紫外-可见分光光度法和荧光光度法研究了阿拉伯胶存在下,β-环糊精(β-CD)对钼、钴、锌硫氰酸根络阴离子与碱性染料(孔雀绿、结晶紫、乙基紫、罗丹明B、罗丹明6G、丁基罗丹明)所生成的离子缔合物的作用机理。结果表明,β-CD对这些体系的增敏作用,主要是由于β-CD与碱性染料及其相应的缔合物形成了包合络合物,从而使染料富集并创造了有利于反应的微环境所致。其增敏作用的大小,决定于β-CD对有关碱性染料及其缔合物包合的难易。阿拉伯胶主要起分散作用,它与β-CD相互协同,使体系既灵敏又稳定。By means of ultraviolet and visible spectrophotometry and fluorimetry the mechanism of the effect of. β-cyclodextrin (β-CD) on metal (Mo, Zn, Co) thiocyanate-basic dye association compound system in the presence of arabic gum has been studied. It indicates that the sensitizing effect of β-CD on these systems results primarily from the formation of β-CD-inclusion complex with the basic dye, thus increasing the concentration of the basic dye and creating suitable reaction microenvironment. The arabic gum mainly serves as a dispersing agent. The synergistic effect of arabic gum and β-CD results in a more sensitive and stable system.

关 键 词：环糊精 Me-SCN^- 碱性染料 

分 类 号：O636.12[理学—高分子化学]