Eco-friendly synthesis of CuInS₂ and CuInS₂@ZnS quantum dots and their effect on enzyme activity of lysozyme.

ABSTRACT: We report on the green and facile aqueous microwave synthesis of glutathione (GSH) stabilized luminescent CuInS₂ (CIS, size = 2.9 nm) and CuInS₂@ZnS core-shell (CIS@ZnS, size = 3.5 nm) quantum dots (QDs). The core-shell nanostructures exhibited excellent photo- and water/buffer stability, a long photoluminescence (PL) lifetime (463 ns) and high PL quantum yield (PLQY = 26%). We have evaluated the comparative enzyme kinetics of these hydrophilic QDs by interacting them with the model enzyme lysozyme, which was probed by static and synchronous fluorescence spectroscopy. The quantification of the QD-lysozyme binding isotherm, exchange rate, and critical flocculation concentration was carried out. The core-shell QDs exhibited higher binding with lysozyme yielding a bindin

SUBMITTER: Mir IA 

PROVIDER: S-EPMC9085571 | biostudies-literature | 2018 Aug

REPOSITORIES: biostudies-literature