Exceptionally Stable Dimers and Trimers of Au25 Clusters Linked with a Bidentate Dithiol: Synthesis, Structure and Chirality Study

Article Article scientifique Article Exceptionally Stable Dimers and Trimers of Au25 Clusters Linked with a Bidentate Dithiol: Synthesis, Structure and Chirality Study eng 2023-03-09 2023-03-09 author Swierczewski Michal Maciej 0000-0001-8141-0105 Department of Physical Chemistry University of Geneva 30 Quai Ernest-Ansermet 1211 Geneva 4 Switzerland 908520 author Cousin Fabrice Laboratoire Léon Brillouin Université Paris-Saclay CEA-Saclay 91191 Gif-sur-Yvette Cedex France author Banach Ewa Marta Department of Physical Chemistry University of Geneva 30 Quai Ernest-Ansermet 1211 Geneva 4 Switzerland 855373 Ewa Banach author Rosspeintner Arnulf 0000-0002-1828-5206 Department of Physical Chemistry University of Geneva 30 Quai Ernest-Ansermet 1211 Geneva 4 Switzerland 723857 Département de chimie physique (CHIFI) author Lawson Daku Latevi Max Department of Physical Chemistry University of Geneva 30 Quai Ernest-Ansermet 1211 Geneva 4 Switzerland 530149 Département de chimie physique (CHIFI) author Ziarati Abolfazl Department of Physical Chemistry University of Geneva 30 Quai Ernest-Ansermet 1211 Geneva 4 Switzerland 900234 author Kazan Rania Department of Physical Chemistry University of Geneva 30 Quai Ernest-Ansermet 1211 Geneva 4 Switzerland 814270 author Jeschke Gunnar Department of Chemistry and Applied Biosciences, ETH Zürich Vladimir-Prelog-Weg 1–5/10 8093 Zürich Switzerland author Azoulay Raymond Department of Physical Chemistry University of Geneva 30 Quai Ernest-Ansermet 1211 Geneva 4 Switzerland 640773 author Lee Lay‐Theng Laboratoire Léon Brillouin Université Paris-Saclay CEA-Saclay 91191 Gif-sur-Yvette Cedex France author Buergi Thomas 0000-0003-0906-082X Department of Physical Chemistry University of Geneva 30 Quai Ernest-Ansermet 1211 Geneva 4 Switzerland 727741 Département de chimie physique (CHIFI) 1-8 e202215746 10.1002/anie.202215746 36728623 1433-7851 https://onlinelibrary.wiley.com/doi/10.1002/anie.202215746 A bidentate chiral dithiol (diBINAS) is utilised to bridge Au 25 nanoclusters to form oligomers. Separation by size allows the isolation of fractions that are stable thanks to the bidentate nature of the linker. The structure of the products is elucidated by small‐angle X‐ray scattering and calculated using density functional theory. Additional structural details are studied by diffusion‐ordered nuclear magnetic resonance spectroscopy, transmission electron microscopy and matrix‐assisted laser desorption/ionization time of flight mass spectrometry. Significant changes in the optical properties are analysed by UV/Vis and fluorescence spectroscopies, with the latter demonstrating a strong emission enhancement. Furthermore, the emergent chiral characteristics are studied by circular dichroism. Due to the geometry constraints of the nanocluster assemblies, diBINAS can be regarded as a templating molecule, taking a step towards the directed self‐assembly of metal clusters. Bidentate Dimerization Gold Cluster Self-Assembly Small-Angle X-Ray Scattering Dewey 540 Swiss National Science Foundation Metal cluster assemblies with a twist 173720 CH Programmes 38 Département de chimie physique 142 false Angewandte Chemie 62 16 a5a4c634-1ada-4468-8d49-e29389a0caeb Article (Published version) Public Swierczewski.pdf 2838101 application/pdf CC BY-NC-ND 188acdd322c0ec74ec14568d8639f228dfb89ed6f7ef6c7d7f371e581295c462 openAccess Faculté des sciences / Section de chimie et biochimie / Département de chimie physique

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Exceptionally Stable Dimers and Trimers of Au₂₅ Clusters Linked with a Bidentate Dithiol: Synthesis, Structure and Chirality Study	Angewandte Chemie	2023	114	134
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