Donor-Acceptor Interactions of C₆₀F₁₈ with Polycyclic Aromatic Hydrocarbons: Size Effects in Bulk Crystallization and Surface Constraints.

ABSTRACT: An in-depth study of donor-acceptor (D/A) interactions between the high-dipole acceptor C₆₀F₁₈ (A) and polycyclic aromatic hydrocarbon (PAH) donors-pyrene, perylene, and coronene-reveals a surprisingly strong PAH size influence on the D/A complex stoichiometry and ordering in co-crystals. The crystallographic study shows the tendency of D/A mixtures to form stacked layered structures for the larger PAHs, perylene and coronene, while the role of aromatic π-π interactions diminishes, in contrast to the smaller pyrene/C₆₀F₁₈ system. The behavior of the layered-D/A assemblies is investigated by utilizing sequential deposition and co-evaporation of C₆₀F₁₈ and coronene on Au(111) surfaces. Scanning tunneling microscopy shows that

SUBMITTER: DeWeerd NJ 

PROVIDER: S-EPMC12605651 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature