| AVS 57th International Symposium & Exhibition | |
| Surface Science | Tuesday Sessions |
| Session SS2-TuM |
| Session: | Aromatic Molecular Films |
| Presenter: | L.A. Bumm, The University of Oklahoma |
| Authors: | D.H. Dahanayaka, The University of Oklahoma R.D. Abrahams, University of Maryland A. Singh, The University of Oklahoma L.P. Jackson, The University of Oklahoma L.A. Bumm, The University of Oklahoma R.L. Halterman, The University of Oklahoma |
| Correspondent: | Click to Email |
Self-assembled monolayers (SAMs) are flexible substrates for surface chemistry. A wide variety of SAM-surface functionalities can be prepared using alkanethiols with different terminal functional groups. Typically this requires a different alkanethiol for each. Another strategy uses a single alkanethiol to create a reactive surface which can be chemically modified post self-assembly. We are exploring azido-functional monolayers, which are reactive under mild conditions. The best known reaction is the copper catalyzed catalytic 1,3-dipolar cycloaddition with terminal alkynes. This approach has already been demonstrated for general surface chemical modification. We demonstrate molecularly-resolved STM imaging of these SAMs before and after the reaction. The surface structure affects the local reactivity and can be used to direct the reaction at the nanometer scale.
This work has been supported by NSF CAREER grant No. CHE- 0239803, NSF MRSEC No. DMR-0080054, and NSF No. DMR-0805233.