Surface Diffusion Aided by a Chirality Change of Self‐Assembled Oligomers under 2D Confinement

Abstract: Chirality switching of self‐assembled molecular structures is of potential interest for designing functional materials but is restricted by the strong interaction between the embedded molecules. Here, we report on an unusual approach based on reversible chirality changes of self‐assembled oligomers using variable‐temperature scanning tunneling microscopy supported by quantum mechanical calculations. Six functionalized diazomethanes each self‐assemble into chiral wheel‐shaped oligomers on Ag (111). At 130 K, a temperature far lower than expected, the oligomers change their chirality even though the molecules reside in an embedded self‐assembled structure. Each chirality change is accompanied by a slight center‐of‐mass shift. We show how the identical activation energies of the two processes result from the interplay of the chirality change with surface diffusion, findings that open the possibility of implementing various functional materials from self‐assembled supramolecular structures.

Object Details

• Location: Deutsche Nationalbibliothek Frankfurt am Main
• Extent: Online-Ressource
• Language: Englisch

References and Relationships

• Bibliographic citation: Surface Diffusion Aided by a Chirality Change of Self‐Assembled Oligomers under 2D Confinement ; day:29 ; month:09 ; year:2022 ; extent:1 ; Angewandte Chemie / International edition. International edition ; (29.09.2022) (gesamt 1)

Contributors, Places and Time

• Creator: Bera, Abhijit ; Henkel, Stefan ; Mieres‐Perez, Joel ; Andargie Tsegaw, Yetsedaw ; Sanchez‐Garcia, Elsa ; Sander, Wolfram ; Morgenstern, Karina

Further information

• DOI: 10.1002/anie.202212245
• URN: urn:nbn:de:101:1-2022093015065419082377
• Rights: Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
• Last update: 15.08.2025, 7:33 AM CEST