N-AcetylglycineのCu(110)表面での吸着状態と仕事関数
N-AcetylglycineのCu(110)表面での吸着状態と仕事関数
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N-乙酰甘氨酸在Cu(110)表面的吸附状态和功函数
DOI：
10.1380/jsssj.27.380
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发表时间：
2006
期刊：
影响因子：
--
通讯作者：
豊裕 知京
中科院分区：
文献类型：
--
作者：
柳生 進二郎;道子 吉武;豊裕 知京
利用反射吸收红外光谱（IRAS）、低能电子衍射（LEED）、x射线光导光谱（XPS）、程序升温解吸（TPD）和开尔文探针研究了n -乙酰甘氨酸（CH3-CO-NH-CH2COOH (AcGl)）在Cu（110）表面的吸附（构象）结构与功函数之间的关系。AcGl在Cu（110）表面呈二维无序吸附。从室温到350 K，电离的AcGl通过羧酸基的等效氧原子（直立方式）广泛垂直于表面。在400k以上，当AcGl的N原子接近表面并躺卧时，电离AcGl的方向与表面平行（躺卧方式），然后在550k左右分解。AcGl吸附使功函数增大。平躺式比站立式的工作功能更大。据了解，电荷从表面转移到分子的影响比分子构象变化中偶极矩变化的影响更重要。实验表明，AcGl构象中不同的吸附状态改变了功函数。
The relation between the adsorption (conformation) structure and the work function of N-Acetylglycine (CH3-CO-NH-CH2COOH (AcGl)) on Cu(110) surface, has been investigated as a function of the surface temperature using reflection absorption infrared spectroscopy (IRAS), low energy electron diffraction (LEED), X-ray photoemission spectroscopy (XPS), temperature programmed desorption (TPD) and Kelvin probe. AcGl adsorbed disorderly in two dimension on Cu(110) surface. From room temperature to 350 K, ionized AcGl orients broadly perpendicular to the surface via equivalent oxygen atoms of the carboxylate group (Standing up fashion). Above 400 K, as N atom of the AcGl approaches the surface and lies, then, ionized AcGl orients parallel to the surface (Lying-down fashion) and then decompose at around 550 K. The work function increases by AcGl adsorption. The work function of the lying-down fashion is larger than the standing up fashion. It is understood that the effect of the charge transfer from the surface to molecules are more dominant than the effect of the change in the dipole moment of the conformational change of the molecule. It was experimentally clarified that the work function changed by the differences in the states of adsorption in conformation of AcGl.
己二酸在Cu(110)表面的吸附状态
DOI：
--
发表时间：
2005
期刊：
表面科学 26
影响因子：
--
作者：
柳生進二郎;吉武道子;知京豊裕
通讯作者：
知京豊裕