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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 ;测定了金包覆的 Si3N经— OH和— NH2 基功能化的金样品之间的粘滞力 ,得到了作为溶液 p H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 p K1 / 2分别为 8.4和 9.0 .
The force titration properties of a long chain amino self-assembled monolayer were investigated by chemical force microscopy (CFM). The effect of force probes with different surface groups on the titration of titration was investigated. The effects of gold-coated Si3N The viscous force curve (force titration curve) as a function of the pH of the solution was obtained by the viscous forces between the - OH and - NH2 functionalized gold samples. The results show that - NH2 and - OH functionalized The surface p K1 / 2 is 8.4 and 9.0, respectively.