From dewetting to wetting molecular layers: C-60 on CaCO3( 10(1)over-bar4) as a case study

Rahe P, Lindner R, Kittelmann M, Nimmrich M, Kühnle A (2012)
Physical Chemistry Chemical Physics 14(18): 6544-6548.

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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.
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Rahe P, Lindner R, Kittelmann M, Nimmrich M, Kühnle A. From dewetting to wetting molecular layers: C-60 on CaCO3( 10(1)over-bar4) as a case study. Physical Chemistry Chemical Physics. 2012;14(18):6544-6548.
Rahe, P., Lindner, R., Kittelmann, M., Nimmrich, M., & Kühnle, A. (2012). From dewetting to wetting molecular layers: C-60 on CaCO3( 10(1)over-bar4) as a case study. Physical Chemistry Chemical Physics, 14(18), 6544-6548. doi:10.1039/c2cp40172j
Rahe, P., Lindner, R., Kittelmann, M., Nimmrich, M., and Kühnle, A. (2012). From dewetting to wetting molecular layers: C-60 on CaCO3( 10(1)over-bar4) as a case study. Physical Chemistry Chemical Physics 14, 6544-6548.
Rahe, P., et al., 2012. From dewetting to wetting molecular layers: C-60 on CaCO3( 10(1)over-bar4) as a case study. Physical Chemistry Chemical Physics, 14(18), p 6544-6548.
P. Rahe, et al., “From dewetting to wetting molecular layers: C-60 on CaCO3( 10(1)over-bar4) as a case study”, Physical Chemistry Chemical Physics, vol. 14, 2012, pp. 6544-6548.
Rahe, P., Lindner, R., Kittelmann, M., Nimmrich, M., Kühnle, A.: From dewetting to wetting molecular layers: C-60 on CaCO3( 10(1)over-bar4) as a case study. Physical Chemistry Chemical Physics. 14, 6544-6548 (2012).
Rahe, Philipp, Lindner, Robert, Kittelmann, Markus, Nimmrich, Markus, and Kühnle, Angelika. “From dewetting to wetting molecular layers: C-60 on CaCO3( 10(1)over-bar4) as a case study”. Physical Chemistry Chemical Physics 14.18 (2012): 6544-6548.
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