化学力显微镜对自组装单分子膜的力滴定研究

被引:4
作者
何会新
李春增
王俊梅
张浩力
徐筱杰
刘忠范
机构
[1] 北京大学化学与分子工程学院智能材料研究中心!北京,北京大学化学与分子工程学院智能材料研究中心!北京,北京大学化学与分子工程学院智能材料研究中心!北京,北京大学化学与分子工程学院智能材料研究中心!北京,北京大学化学与分子工程学院智能材料研究
关键词
化学力显微镜; 粘滞力; 力滴定; 自组装单分子膜;
D O I
暂无
中图分类号
O621 [有机化学一般性问题];
学科分类号
070303 ; 081704 ;
摘要
The concept of force titration was firstly proposed based on the technique of Chemical Force Microscopy (CFM). Self-Asseinbled Monolayer (SAM) on substrate surface can be titrated with buffer solutions at a nanometer scale by measuring the adliesion force between the SAM-inodified substrate and probe tip. The plot of adhesion force us pH value was termed as force titration curve. As an example, the titration behavior of w-mercaptoundecanoic acid monolayer on gold has been studied. It was found that there is a big hump around pH 5 ~ 6 in its force titration curve. Taking the contact angle titration result together, an interactiou model for the monolayer was suggested from the chemical hysteresis point of view.
引用
收藏
页码:293 / 296
页数:4
相关论文
共 3 条
[1]  
Frisble C D. Rozsnyai L F. Lieber C M,et al. Science .
[2]  
Noy A.Frisbie C D.Lieber C M.et al. Journal of the American Chemical Society . 1995
[3]  
Israclachvili J N J.Plys. Chen Y L,Helm C A. Chemtracts . 1991