Low-energy electron diffraction and work function studies of adsorbed organic monolayers on the (100) and (111) crystal faces of platinum
Low-energy electron diffraction and work function studies of adsorbed organic monolayers on the (100) and (111) crystal faces of platinum
复制标题
铂（100）和（111）晶面上吸附有机单层的低能电子衍射和功函数研究
DOI：
10.1016/0001-8686(76)80003-6
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发表时间：
1976
期刊：
影响因子：
--
通讯作者：
G. Somorjai
中科院分区：
文献类型：
--
作者：
J. Gland;G. Somorjai
研究了一大批有机化合物在铂（100）和铂（111）单晶表面的吸附和有序特性。低能电子衍射已被用来测定表面结构。对功函数变化进行了测量，以确定吸附时发生的电荷再分配。已研究的分子有乙炔、苯胺、苯、联苯、正丁基苯、对丁基苯、三苯、1,3-环己二烯、环己烷、环己烯、环戊烷、乙烯、正己烷、三甲苯、2-甲基萘、萘、硝基苯、丙烯、吡啶、甲苯和间二甲苯。所研究的所有分子都吸附在Pt（111）和Pt(100)-（5×1）表面，并作为金属表面的电子供体。六边形对称Pt（111）表面上的吸附层比正方形对称Pt（100）表面上的吸附层更有序。不饱和分子通常通过与金属表面形成π键吸附在铂的这些晶面上。
The adsorption and ordering characteristics of a large group of organic compounds has been studied on the platinum (100) and (111) single-crystal surfaces. Low-energy electron diffraction has been used to determine surface structures. Work function change measurements have been made to determine the charge redistribution which occurs on adsorption. The molecules which have been studied are acetylene, aniline, benzene, biphenyl,n-butyl-benzene,t-butylbenzene, cyanobenzene, 1,3-cyclohexadiene, cyclohexane, cyclohexene, cyclopentane, ethylene,n-hexane, mesitylene, 2-methylnaphthalene, napthalene, nitrobenzene, propylene, pyridine, toluene andm-xylene. All molecules studied adsorb on both the Pt(111) and Pt(100)-(5×1) surfaces and act as electron donors to the metal surface. The adsorbed layers are more ordered on the hexagonally symmetric Pt(111) surface than on the square symmetric Pt(100) surface. Unsaturated molecules generally adsorb on these crystal faces of platinum by forming π-bonds with the metal surface.