利用自制的季铵盐Gemini表面活性剂二溴化-N、N′-二(二甲基十二烷基)丙二铵(C<,12>-3-C<,12>·2Br)离子选择电极,通过电动势(EMF)法研究了C<,12>-3-C<,12>·2Br与牛血清白蛋白(BSA)之间的相互作用,得到了C<,12>-3-C<,12>·2Br在BSA大分子上结合过程的结合等温线和对应的Scatehard曲线,并通过结合能力的概念得到了结合过程的结合位点数、Hill系数及Hill结合常数.通过研究发现,C<,12>-3-C<,12>·2Br与BSA大分子的结合具有正的协同作用,相互结合的位点可以分为两类,第一类为主要通过静电作用结合的强结合位点,第二类为主要通过疏水作用结合的弱结合位点.
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