IUVSTA 15th International Vacuum Congress (IVC-15), AVS 48th International Symposium (AVS-48), 11th International Conference on Solid Surfaces (ICSS-11)
    Electrochemistry and Fluid-Solid Interfaces Monday Sessions
       Session EC-MoA

Paper EC-MoA4
Growth and Dissolution of Surface Structures by Electrochemical Control of Molecular Self-assembly

Monday, October 29, 2001, 3:00 pm, Room 111

Session: Electrochemical Control of Surface Structure: Growth and Dissolution
Presenter: E. Borguet, University of Pittsburgh
Authors: Y. He, University of Pittsburgh
T. Ye, University of Pittsburgh
E. Borguet, University of Pittsburgh
Correspondent: Click to Email
Electrochemical control of molecular self-assembly offers a number of interesting perspectives ranging from molecular electronics to nanostructure formation. Self-assembled alkane monolayers have been observed on both reconstructed and unreconstructed Au(111) surfaces under electrochemical control with STM (scanning tunneling microscopy). The hexadecane molecules appeared as 2.2nm long rods, arranged in parallel rows in high resolution STM images, suggesting an extended molecular conformation. In situ STM enabled the influence of molecular overlayers on surface processes to be monitored in real time following potential driven perturbations. Our results indicate that self-assembled alkane monolayers modify the growth and dissolution of nanoscale islands and can serve as templates for selective deposition of other nanoscale structures.