Combined spectroscopic studies on post-functionalized Au₂₅ cluster as an ATR-FTIR sensor for cations.

ABSTRACT: Recently, significant research activity has been devoted to thiolate-protected gold clusters due to their attractive optical and electronic properties. These properties as well as solubility and stability can be controlled by post-synthetic modification strategies. Herein, the ligand exchange reaction between Au₂₅(2-PET)₁₈ cluster (where 2-PET is 2-phenylethanethiol) and di-thiolated crown ether (t-CE) ligands bearing two chromophores was studied. The post-functionalization aimed to endow the cluster with ion binding properties. The exchange reaction was followed in situ by UV-vis, ¹H NMR and HPLC. MALDI mass analysis revealed the incorporation of up to 5 t-CE ligands into the ligand shell. Once functionalized MALDI furthermore showed c

SUBMITTER: Baghdasaryan A 

PROVIDER: S-EPMC8171333 | biostudies-literature | 2021 Apr

REPOSITORIES: biostudies-literature