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Rotation in an Enantiospecific Self‐Assembled Array of Molecular Raffle Wheels

Meier, Dennis; Adak, Abhishek K.; Knecht, Peter; Reichert, Joachim; Mondal, Sourav; Suryadevara, Nithin; Kuppusamy, Senthil Kumar; Eguchi, Keitaro; Muntwiler, Matthias K.; Allegretti, Francesco; Ruben, Mario; Barth, Johannes V.; Narasimhan, Shobhana; Papageorgiou, Anthoula C.


Tailored nano-spaces can control enantioselective adsorption and molecular motion. We report on the spontaneous assembly of a dynamic system—a rigid kagome network with each pore occupied by a guest molecule—employing solely 2,6-bis(1H-pyrazol-1-yl)pyridine-4-carboxylic acid on Ag(111). The network cavity snugly hosts the chemically modified guest, bestows enantiomorphic adsorption and allows selective rotational motions. Temperature-dependent scanning tunnelling microscopy studies revealed distinct anchoring orientations of the guest unit switching with a 0.95 eV thermal barrier. H-bonding between the guest and the host transiently stabilises the rotating guest, as the flapper on a raffle wheel. Density functional theory investigations unravel the detailed molecular pirouette of the guest and how the energy landscape is determined by H-bond formation and breakage. The origin of the guest's enantiodirected, dynamic anchoring lies in the specific interplay of the kagome network and the silver surface.

Verlagsausgabe §
DOI: 10.5445/IR/1000141696
Veröffentlicht am 10.01.2022
DOI: 10.1002/anie.202107708
Zitationen: 3
Web of Science
Zitationen: 3
Zitationen: 4
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Nanotechnologie (INT)
Institut für Quantenmaterialien und -technologien (IQMT)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 12.2021
Sprache Englisch
Identifikator ISSN: 1433-7851, 1521-3773
KITopen-ID: 1000141696
HGF-Programm 43.32.01 (POF IV, LK 01) Molecular Materials Basis for Optics & Photonics
Weitere HGF-Programme 43.21.01 (POF III, LK 01) Quantum Correlations in Condensed Matter
Erschienen in Angewandte Chemie / International edition
Verlag John Wiley and Sons
Band 60
Heft 52
Seiten 26932–26938
Vorab online veröffentlicht am 22.11.2021
Nachgewiesen in Scopus
Web of Science
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