Controlling an Electron-Transfer Reaction at a Metal Surface by Manipulating Reactant Motion and Orientation

被引:32
作者
Bartels, Nils [1 ]
Krueger, Bastian C. [1 ]
Auerbach, Daniel J. [2 ]
Wodtke, Alec M. [1 ,2 ]
Schaefer, Tim [1 ]
机构
[1] Univ Gottingen, Inst Phys Chem, D-37077 Gottingen, Germany
[2] Max Planck Inst Biophys Chem, D-37077 Gottingen, Germany
关键词
electron transfer; NO; surface scattering; vibrational relaxation; vibrationally excited molecules; OF-FLIGHT MEASUREMENTS; VIBRATIONAL-EXCITATION; NO SCATTERING; EMISSION; COLLISIONS; MOLECULES; AU(111);
D O I
10.1002/anie.201407051
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The loss or gain of vibrational energy in collisions of an NO molecule with the surface of a gold single crystal proceeds by electron transfer. With the advent of new optical pumping and orientation methods, we can now control all molecular degrees of freedom important to this electron-transfer-mediated process, providing the most detailed look yet into the inner workings of an electron-transfer reaction and showing how to control its outcome. We find the probability of electron transfer increases with increasing translational and vibrational energy as well as with proper orientation of the reactant. However, as the vibrational energy increases, translational excitation becomes unimportant and proper orientation becomes less critical. One can understand the interplay of all three control parameters from simple model potentials.
引用
收藏
页码:13690 / +
页数:5
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