摘要
为从分子水平认识亚甲蓝(MB)分子与大分子之间相互作用机理,应用吸收光谱法研究了MB与十二烷基硫酸钠(SDS)之间相互作用机理,考察了乙醇、氯化钠、羟丙基-β-环糊精以及Triton X-100对相互作用的影响。结果表明:MB与SDS之间能发生相互作用形成复合物产生变色反应,乙醇等对相互作用都有影响。认为MB与SDS变色反应机理是在MB与SDS大分子间发生静电相互作用基础上,结合在SDS有序集合体上MB分子定向聚集所引起的。
Aiming to the cognition of the mechanism of the reaction between the molecules of methylene blue （MB） and the molecules of large-molecular compounds, the interaction of MB with sodium dodecyl sulfate （SDS） was studied spectrophotometrically. The effects of the presence of ethanol, sodium chloride, hydroxypropyl-β- cyclodextrin and Triton X-100 on the reaction were also tested. As shown by the experimental results, a complex compound was formed between MB and SDS leading to change of color, and the color-change reaction was affected obviously by the addition of ethanol. It was concluded that the complex-compound of MD-SDS was formed on the basis of electrostatic action, and the directional aggregation of MB molecules bound on the orderly aggregates of SDS was the cause the color change action.
出处
《理化检验（化学分册）》
CAS
CSCD
北大核心
2007年第4期299-302,共4页
Physical Testing and Chemical Analysis(Part B:Chemical Analysis)
关键词
亚甲蓝
十二烷基硫酸钠
吸收光谱
Methylene blue
Sodium dodecyl sulfate
Absorption spectrometry
