Scientific article
OA Policy
English

Dynamic Origin of Chirality Transfer between Chiral Surface and Achiral Ligand in Au38 Clusters

Published inACS Nano, vol. 13, no. 6, p. 7127-7134
Publication date2019
Abstract

The transfer of chirality between nanomolecules is at the core of several applications in chiral technology such as sensing and catalysis. However, the origin of this phenomenon and how exactly nanoscale objects transfer chirality to molecules in their vicinity remain largely obscure. Here, we show that the transfer of chirality for the intrinsically chiral gold cluster Au38(SR)24 is site dependent; that is, it differs depending on the ligand-binding sites. This is closely related to the dynamic nature of the ligands on the cluster surface. Using a combination of NMR techniques and molecular dynamics simulations, we could assign the four symmetry-unique ligands on the cluster. The study reveals largely different conformational dynamics of the bound ligands, explaining the diverse diastereotopicities observed for the CH2 protons of the ligands. Although chirality is a structural property, our study reveals the importance of dynamics for the transfer of chirality.

Keywords
  • Monolayer-protected clusters
  • Chiral nanoclusters
  • Chirality transfer
  • Molecular dynamics simulations
  • Au38(SR)24
  • NMR
  • TOCSY
Citation (ISO format)
RICCARDI, Laura et al. Dynamic Origin of Chirality Transfer between Chiral Surface and Achiral Ligand in Au38 Clusters. In: ACS Nano, 2019, vol. 13, n° 6, p. 7127–7134. doi: 10.1021/acsnano.9b02552
Main files (1)
Article (Published version)
accessLevelPublic
Identifiers
Additional URL for this publicationhttps://pubs.acs.org/doi/10.1021/acsnano.9b02552
Journal ISSN1936-086X
362views
154downloads

Technical informations

Creation09/09/2020 12:08:00
First validation09/09/2020 12:08:00
Update time15/03/2023 22:36:07
Status update15/03/2023 22:36:07
Last indexation31/10/2024 19:42:17
All rights reserved by Archive ouverte UNIGE and the University of GenevaunigeBlack