Gold Nanocluster Functionalized with Peptide Dendron Thiolates: Acceleration of the Photocatalytic Oxidation of an Amino Alcohol in a Supramolecular Reaction Field
journal contributionposted on 15.10.2021, 14:08 by Katsuhiro Isozaki, Ryo Ueno, Kosuke Ishibashi, Genta Nakano, Haozhi Yin, Kenta Iseri, Masanori Sakamoto, Hikaru Takaya, Toshiharu Teranishi, Masaharu Nakamura
Herein, we report the synthesis of gold nanoclusters (AuNCs) functionalized by peptide dendron thiolate ligands forming a hydrogen bonding supramolecular reaction field. The prepared AuNCs act as efficient photocatalysts that promote the oxidative cyclization of an amino alcohol to afford the oxazolidine product. Circular dichroism (CD) spectroscopy and 1H NMR titration experiments revealed that the dynamic transformation of interdendron hydrogen bonds into intermolecular hydrogen bonds between the ligand and the substrate is the key to accelerating the photocatalytic reaction. This work introduces a concept for tuning the reactivities and selectivities of metal nanocluster catalysts that use supramolecular reaction fields created with dendritic thiolate ligands.
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peptide dendron thiolatesmetal nanocluster catalystsintermolecular hydrogen bondsinterdendron hydrogen bondsdendritic thiolate ligandsprepared auncs act1 </ supgold nanocluster functionalizedgold nanoclusterswork introducesphotocatalytic reactionphotocatalytic oxidationoxidative cyclizationoxazolidine productefficient photocatalystsdynamic transformationcircular dichroismamino alcohol