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用角分辨XPS(Angle-resolvedXPS)研究研究了HS(CH2)10COOH(I)HS(CH2)3OC6H4N=NC6H4(CH2)7CH3(II)和HS(CH2)6HS(Ⅲ)3种分子在Au膜表面制备的自组装单分子层,得出了(I)中S原子,(Ⅱ)中S,N原子距膜表面的垂直距离,并结合构象分析确定了分子的取向和倾角,对分子(Ⅲ)则得出分子在紫外光照射下氧化反应的选择性,发现氧化主要在底层 相似文献
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化学力显微镜对自组装单分子膜的力滴定研究 总被引:4,自引:0,他引:4
The concept of force titration was firstly proposed based on the technique of Chemical Force Microscopy (CFM). Self-Assembled Monolayer (SAM) on substrate surface can be titrated with buffer solutions at a nanometer scale by measuring the adhesion force between the SAM-modified substrate and probe tip. The plot of adhesion force vs 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 interaction model for the monolayer was suggested from the chemical hysteresis point of view. 相似文献
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化学力显微镜对ω-巯基正十一胺自组装单分子膜的力滴定研究 总被引:1,自引:0,他引:1
采用化学力显微术(CFM)研究了一种长链氨基自组装单分子膜的力滴定性质,考察了表面基团性质不同的力探针对力滴定的影响,滴定了金包覆的Si3N经-OH和-NH2基功能化的金样品之间的粘滞力,得到了作为淀粉 PH值函数的粘滞力曲线(力滴定曲线),结果表明,-NH2和-OH基功能化的表面pK1/2分别为8.4和9.0。 相似文献
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