| Literature DB >> 30988416 |
Mina R Narouz1, Kimberly M Osten2, Phillip J Unsworth1, Renee W Y Man2, Kirsi Salorinne2, Shinjiro Takano3, Ryohei Tomihara3, Sami Kaappa4, Sami Malola4, Cao-Thang Dinh5, J Daniel Padmos1, Kennedy Ayoo1, Patrick J Garrett1, Masakazu Nambo2, J Hugh Horton1, Edward H Sargent5, Hannu Häkkinen6, Tatsuya Tsukuda7,8, Cathleen M Crudden9,10.
Abstract
Magic-number gold nanoclusters are atomically precise nanomaterials that have enabled unprecedented insight into structure-property relationships in nanoscience. Thiolates are the most common ligand, binding to the cluster via a staple motif in which only central gold atoms are in the metallic state. The lack of other strongly bound ligands for nanoclusters with different bonding modes has been a significant limitation in the field. Here, we report a previously unknown ligand for gold(0) nanoclusters-N-heterocyclic carbenes (NHCs)-which feature a robust metal-carbon single bond and impart high stability to the corresponding gold cluster. The addition of a single NHC to gold nanoclusters results in significantly improved stability and catalytic properties in the electrocatalytic reduction of CO2. By varying the conditions, nature and number of equivalents of the NHC, predominantly or exclusively monosubstituted NHC-functionalized clusters result. Clusters can also be obtained with up to five NHCs, as a mixture of species.Entities:
Year: 2019 PMID： 30988416 DOI： 10.1038/s41557-019-0246-5
Source DB: PubMed Journal: Nat Chem ISSN： 1755-4330 Impact factor: 24.427