AVS 45th International Symposium
    Surface Science Division Monday Sessions
       Session SS-MoP

Paper SS-MoP8
Phenyl Containing Radicals on Cu[111]

Monday, November 2, 1998, 5:30 pm, Room Hall A

Session: Surface Science Division Poster Session
Presenter: G.S. McCarty, Pennsylvania State University
Authors: G.S. McCarty, Pennsylvania State University
M.K. Kamna, Intel
P.S. Weiss, Pennsylvania State University
Correspondent: Click to Email
Surface features such as step edges, impurities, and adsorbates cause modification of the local electronic properties of a surface. We are taking advantage of this phenomenon to produce active sites for surface reactions. We explore the atomic scale electronic effects on reactions of phenyl containing species to understand the catalytic properties of copper. Copper catalyzes reactions of phenyl containing species through the Ullmann coupling reaction. A low temperature UHV STM was used to study Cu[111] dosed with iodobenzene, di-iodobenzene, and biphenyl. The dissociation of iodobenzene into iodine and phenyl was observed. The reaction can be driven to produce biphenyl. We observed the intermediate complex pairs responsible for the exquisite specificity of this reaction.