Abstract
The coverage-dependent self-assembly of Nickel-tetraphenyl porphyins on Gold vicinal surfaces was studied by scanning tunneling microscopy. On Au(788) the molecular self-assembly is square-shaped, following the molecular symmetry. On Au(332) the molecules nucleate in a parallelogram lattice for monolayer coverage and in a squared lattice for multilayer coverage. Depending on the vicinal surface the molecules adopt either a saddle shaped or a more planar conformation. The experiments demonstrate that crystallographic direction, terrace sizes and coverage are important in establishing different assembly geometries.
Original language | English (US) |
---|---|
Pages (from-to) | 122105 |
Journal | Surface Science |
Volume | 723 |
DOIs | |
State | Published - May 3 2022 |
Bibliographical note
KAUST Repository Item: Exported on 2022-05-16Acknowledgements: Supported by FAPESP (grant numbers 2007/54829-5, 2007/08244-5), CNPq (grant numbers 482390/2012-3 and 308717/2012-0), and CAPES from Brazil. S.F. gratefully acknowledges FAPESP studentship 2012/16860-8. MJP is thankful for the funding provided by the FAPESP grant 2011/12566-3.
ASJC Scopus subject areas
- Materials Chemistry
- Surfaces and Interfaces
- Surfaces, Coatings and Films
- Condensed Matter Physics