Lloyd, Julian A.Papageorgiou, Anthoula C.Fischer, SybilleOh, Seung CheolSaglam, OzgeDiller, KatharinaDuncan, David A.2023-06-162023-06-1620161530-69841530-6992https://doi.org/10.1021/acs.nanolett.5b05026https://hdl.handle.net/20.500.14365/1503Bisphenol A (BPA) aggregates on Ag(111) shows a polymorphism between two supramolecular motifs leading to formation of distinct networks depending on thermal energy. With rising temperature a dimeric pairing scheme reversibly converts into a trimeric motif, which forms a hexagonal superstructure with complex dynamic characteristics. The trimeric arrangements notably organize spontaneously into a self-assembled one-component array with supramolecular BPA rotors embedded in a two-dimensional stator sublattice. By varying the temperature, the speed of the rotors can be controlled as monitored by direct visualization. A combination of scanning tunneling microscopy and dispersion corrected density-functional tight-binding (DFTB-vdW(surf)) based molecular modeling reveals the exact atomistic position of each molecule within the assembly as well as the driving force for the formation of the supramolecular rotors.eninfo:eu-repo/semantics/closedAccessSelf-assemblyrotor arraysscanning tunneling microscopydispersion-corrected density-functional tight-bindingsilver surfaceMolecular MachinesSingle-MoleculeSurfacesRotationArticle10.1021/acs.nanolett.5b05026