Charge-Transfer-Induced Magic Cluster Formation of Azaborine Heterocycles on Noble Metal Surfaces
| Autor: | Melissa L. Liriano, Colin J. Murphy, Axel Enders, Andrew J. Therrien, Scott Simpson, Daniel P. Miller, Alex Pronschinske, Andrew W. Baggett, Shih-Yuan Liu, Eva Zurek, E. Charles H. Sykes |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
02 engineering and technology
engineering.material 010402 general chemistry 01 natural sciences symbols.namesake Adsorption Pauli exclusion principle Computational chemistry Cluster (physics) Molecule Physics::Chemical Physics Physical and Theoretical Chemistry Chemistry Intermolecular force Charge (physics) 021001 nanoscience & nanotechnology 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials Dipole General Energy Chemical physics engineering symbols Noble metal 0210 nano-technology |
| Zdroj: | The Journal of Physical Chemistry C. 120:6020-6030 |
| ISSN: | 1932-7455 1932-7447 |
| DOI: | 10.1021/acs.jpcc.5b11970 |
| Popis: | We report a combined experimental and theoretical study of the adsorption and assembly of a nitrogen–boron-containing heterocycle, 1,2-dihydro-1,2-azaborine, on Au(111) and Cu(111). Despite the inherent molecular dipole moment, the self-assembly behavior is found to be highly surface dependent, with isolated molecules prevalent on Cu(111) and discrete (“magic”) clusters on Au(111). The ability to form clusters of a particular size can be understood in terms of a balance between attractive intermolecular interactions, including directional B–H···H–N dihydrogen bonding, and repulsive forces from Coulombic interactions between the charged molecules dictated by differences in the charge transfer and Pauli repulsion between the adsorbate and the surface. This work highlights the importance of metal–molecule charge transfer in the adsorption and assembly of dipolar molecules on surfaces and demonstrates that their surface-bound properties cannot be predicted a priori from gas-phase dipole moments alone. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|