带有长侧链醌类化合物的Langmuir膜及其表面电势  

Studies on the Langmuir Films of the Quinone Compounds with Long Alkyl Side Chains and Their Surface Potential

作　　者：黄岩谊[1] 甘良兵[1] 黄春辉[1] 赵一雷[1] 翟锦[1] 邹永德[2,3] 谭俊 赵新生[2,3] 

机构地区：[1]北京大学稀土材料化学及应用国家重点实验室 [2]中山大学物理系 [3]北京大学化学系

出　　处：《高等学校化学学报》1998年第8期1323-1325,共3页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金;国家攀登计划A资助

摘　　要：泛醌（Ｕｂｉｑｕｉｎｏｎｅ）和质体醌（Ｐｌａｓｔｏｑｕｉｎｏｎｅ）作为非蛋白电子载体存在于动物线粒体呼吸链和植物光合作用链中．这两类物质在生物膜上有活性［１］．Ｌａｎｇｍｕｉｒ膜是在气液界面形成的单层分子膜，这种结构排列较为有序，可以在一定程度上看作...The Langmuir films of three quinone (ubiquinone or plastoquinone) molecules with long alkyl side chains, 2,3 dimethyl 5 nonadecyl 1,4 quinone(1), 2,3 dimethyl 5,6 dinonadecyl 1,4 quinone(2) and 6 methyl 2,3 dimethoxyl 5 nonadecyl 1,4 quinone(3) were investigated. The surface potential isotherms of these molecules have been studied for the first time by using Kelvin probe method. The phenomena presented by the surface pressure and surface potential isotherms have been well explained theoretically. By using the semi empirical molecular orbital theory, the simulation of molecular dipole moments were calculated and the packing orientation of different molecules on the air/water interface were deduced according to the results of surface potential measurements.

关 键 词：泛醌 质体醌 LANGMUIR膜 表面电势 生物膜 

分 类 号：O625.46[理学—有机化学] Q73[理学—化学]