Fluorescence Quenching of Tyrosine-Ag Nanoclusters by Metal Ions: Analytical and Physicochemical Assessment.

ABSTRACT: A new synthesis method is described for the first time to produce silver nanoclusters (AgNCs) by using the tyrosine (Tyr) amino acid. Several important parameters (e.g., molar ratios, initial pH, reaction time etc.) were optimized to reach the highest yield. The formed Tyr-AgNCs show characteristic blue emission at λ_em = 410 nm, and two dominant fluorescence lifetime components were deconvoluted (τ₁ ~ 3.7 and τ₂ ~ 4.9 ns). The NCs contained metallic cores stabilized by dityrosine. For possible application, the interactions with several metal ions from the tap water and wastewater were investigated. Among the studied cations, four different ions (Cu²⁺, Ni²⁺, Fe³⁺, and Rh³⁺) had a dominant effect on the fluorescence

SUBMITTER: Ungor D 

PROVIDER: S-EPMC9456322 | biostudies-literature | 2022 Aug

REPOSITORIES: biostudies-literature