Dynamic double lattice of 1-adamantaneselenolate self-assembled monolayers on Au{111} |
| |
Authors: | Hohman J Nathan Kim Moonhee Schüpbach Björn Kind Martin Thomas John C Terfort Andreas Weiss Paul S |
| |
Affiliation: | California NanoSystems Institute and Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, USA. |
| |
Abstract: | We report a complex, dynamic double lattice for 1-adamantaneselenolate monolayers on Au{111}. Two lattices coexist, revealing two different binding modes for selenols on gold: molecules at bridge sites have lower conductance than molecules at three-fold hollow sites. The monolayer is dynamic, with molecules switching reversibly between the two site-dependent conductance states. Monolayer dynamics enable adsorbed molecules to reorganize according to the underlying gold electronic structure over long distances, which facilitates emergence of the self-organized rows of dimers. The low-conductance molecules assume a (7 × 7) all-bridge configuration, similar to the analogous 1-adamantanethiolate monolayers on Au{111}. The high-conductance molecules self-organize upon mild annealing into distinctive rows of dimers with long-range order, described by a (6√5 × 6√5)R15° unit cell. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|