A combined spectroscopic and ab initio study of the transmetalation of a polyphenol as a potential purification strategy for food additives.

ABSTRACT: Recently, metal exchange (transmetalation) techniques have become popular for the post-synthesis modification of metal organic complexes (MOCs). Here, we have explored the possibility of toxic metal ion (mercury (Hg)) exchange from a model polyphenol, curcumin, which is a very important food additive, using a much less toxic counterpart (copper). While the attachment of different metals on the polyphenol was confirmed using a picosecond resolved fluorescence technique, the surface plasmon resonance (SPR) band of the Ag nanoparticle (NP) was employed as a tool to detect uncoupled Hg ions in aqueous media. Furthermore, a microscopic understanding of the experimental observations was achieved through density functional theory (DFT) based theoretical studies. The presence of Cu ions in the vic

SUBMITTER: Maji TK 

PROVIDER: S-EPMC9049538 | biostudies-literature | 2020 Feb

REPOSITORIES: biostudies-literature