TY  - JOUR
AB  - We report the formation of extended molecular layers of C-60 molecules on a dielectric surface at room temperature. In sharp contrast to previous C-60 adsorption studies on prototypical ionic crystal surfaces, a wetting layer is obtained when choosing the calcite (CaCO3)(10 (1) over bar4) surface as a substrate. Non-contact atomic force microscopy data reveal an excellent match of the hexagonal lattice of the molecular layer with the unit cell dimension of CaCO3(10 (1) over bar4) in the [01 (1) over bar0] direction, while a lattice mismatch along the [(4) over bar(2) over bar 61] direction results in a large-scale moire modulation. Overall, a (2 x 15) wetting layer is obtained. The distinct difference observed microscopically upon C-60 adsorption on CaCO3(10 (1) over bar4) compared to other dielectric surfaces is explained by a macroscopic picture based on surface energies. Our example demonstrates that this simple surface-energy based approach can provide a valuable estimate for choosing molecule-insulator systems suitable for molecular self-assembly at room temperature.
DA  - 2012
DO  - 10.1039/c2cp40172j
LA  - eng
IS  - 18
M2  - 6544
PY  - 2012
SN  - 1463-9076
SP  - 6544-6548
T2  - Physical Chemistry Chemical Physics
TI  - From dewetting to wetting molecular layers:C60 on CaCO3(1014) as a case study
UR  - https://nbn-resolving.org/urn:nbn:de:0070-pub-29138160
Y2  - 2024-11-22T03:07:56
ER  -