Song Fei, Mao Hongying, Guan Dandan, Dou Weidong, Zhang Hanjie, Li Haiyang, He Pimo, Hofmann Philip, Bao Shining
Physics Department, Zhejiang University, Hangzhou, 310027, People's Republic of China. Institute for Storage Ring Facilities and Interdisciplinary Nanoscience Center (iNANO), University of Aarhus, 8000 Aarhus C, Denmark.
J Phys Condens Matter. 2009 Sep 2;21(35):355005. doi: 10.1088/0953-8984/21/35/355005. Epub 2009 Jul 28.
The interface electronic properties of fluorene-1-carboxylic acid (FC-1) adsorbed on Cu(110) have been studied by ultraviolet photoemission spectroscopy (UPS) and first-principles calculations. Both the molecular orbitals and the Cu valence band are significantly modified upon adsorption. FC-1 is chemically bonded to Cu(110) through charge donation and back donation involving the lowest unoccupied molecular orbital (LUMO) and the highest occupied molecular orbital (HOMO) of the molecule. An observed reduction of the work function can be attributed to the adsorption induced charge redistribution, and the positive interface dipole.
通过紫外光电子能谱（UPS）和第一性原理计算研究了芴-1-羧酸（FC-1）吸附在Cu(110)上的界面电子性质。吸附后分子轨道和Cu价带均发生显著变化。FC-1通过涉及分子最低未占据分子轨道（LUMO）和最高占据分子轨道（HOMO）的电荷给予和回授与Cu(110)发生化学键合。观察到的功函数降低可归因于吸附诱导的电荷重新分布以及正界面偶极子。
