Photodynamic Activity of Graphene Oxide/Polyaniline/Manganese Oxide Ternary Composites toward Both Gram-Positive and Gram-Negative Bacteria.

ABSTRACT: Graphene derivatives have been attracting extensive interest as effective antimicrobial agents. In the present study, ternary nanocomposites are prepared based on graphene oxide quantum dots (GOQD), polyaniline (PANI), and manganese oxides. Because of the hydrophilic GOQD and PANI, the resulting GPM nanocomposites are readily dispersible in water and upon photoirradiation at 365 nm exhibit antimicrobial activity toward both Gram-negative Escherichia coli (E. coli) and Gram-positive Staphylococcus epidermidis (S. epidermidis). Notably, the nanocomposite with a high Mn²⁺ and Mn⁴⁺ content is found to be far more active than that with a predominant Mn³⁺ component, although both samples feature a similar elemental composition and aver

SUBMITTER: Chata G 

PROVIDER: S-EPMC8881958 | biostudies-literature | 2021 Sep

REPOSITORIES: biostudies-literature