title: Dynamics of Spatially Confined Bisphenol A Trimers in a Unimolecular Network on Ag(111).
abstract: Bisphenol 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.
authors: Physik-Department E20, Technische Universität München , D-85748 Garching, Germany.
authors: Julian A
authors: JA
authors: Lloyd
authors: Physik-Department E20, Technische Universität München , D-85748 Garching, Germany.
authors: Anthoula C
authors: AC
authors: Papageorgiou
authors: Physik-Department E20, Technische Universität München , D-85748 Garching, Germany.
authors: Sybille
authors: S
authors: Fischer
authors: Physik-Department E20, Technische Universität München , D-85748 Garching, Germany.
authors: Seung Cheol
authors: SC
authors: Oh
authors: Physik-Department E20, Technische Universität München , D-85748 Garching, Germany.
authors: Özge
authors: Ö
authors: Saǧlam
authors: Physik-Department E20, Technische Universität München , D-85748 Garching, Germany.|Theoretische Chemie, Technische Universität München , D-85748 Garching, Germany.
authors: Katharina
authors: K
authors: Diller
authors: Physik-Department E20, Technische Universität München , D-85748 Garching, Germany.
authors: David A
authors: DA
authors: Duncan
authors: Physik-Department E20, Technische Universität München , D-85748 Garching, Germany.
authors: Francesco
authors: F
authors: Allegretti
authors: Physik-Department E20, Technische Universität München , D-85748 Garching, Germany.
authors: Florian
authors: F
authors: Klappenberger
authors: Theoretische Chemie, Technische Universität München , D-85748 Garching, Germany.
authors: Martin
authors: M
authors: Stöhr
authors: Theoretische Chemie, Technische Universität München , D-85748 Garching, Germany.
authors: Reinhard J
authors: RJ
authors: Maurer
authors: Theoretische Chemie, Technische Universität München , D-85748 Garching, Germany.
authors: Karsten
authors: K
authors: Reuter
authors: Physik-Department E20, Technische Universität München , D-85748 Garching, Germany.
authors: Joachim
authors: J
authors: Reichert
authors: Physik-Department E20, Technische Universität München , D-85748 Garching, Germany.
authors: Johannes V
authors: JV
authors: Barth
keywords: Self-assembly; dispersion-corrected density-functional tight-binding; rotor arrays; scanning tunneling microscopy; silver surface