biostudies-literatureRojas-Andrade MDNational Science Foundation1074-1083https://www.ebi.ac.uk/biostudies/studies/S-EPMC9417586biostudies-literatureUnknown2(3)Design and engineering of graphene-based functional nanomaterials for effective antimicrobial applications has been attracting extensive interest. In the present study, graphene oxide quantum dots (GOQDs) were prepared by chemical exfoliation of carbon fibers and exhibited apparent antimicrobial activity. Transmission electron microscopic measurements showed that the lateral length ranged from a few tens to a few hundred nanometers. Upon reduction by sodium borohydride, whereas the UV-vis absorption profile remained largely unchanged, steady-state photoluminescence measurements exhibited a marked blue-shift and increase in intensity of the emission, due to (partial) removal of phenanthroline-like structural defects within the carbon skeletons. Consistent results were obtained in Raman and Nanoscale advancesAntimicrobial activity of graphene oxide quantum dots: impacts of chemical reduction.PMC9417586CHE-1710408CBET-1848841Ayzner AHollingsworth WRArmas JRoseman GMillhauser GLLu JESaltikov CRojas-Andrade MDNichols FMistler WPChen SNguyen TAfalseAntimicrobial activity of graphene oxide quantum dots: impacts of chemical reduction.Design and engineering of graphene-based functional nanomaterials for effective antimicrobial applications has been attracting extensive interest. In the present study, graphene oxide quantum dots (GOQDs) were prepared by chemical exfoliation of carbon fibers and exhibited apparent antimicrobial activity. Transmission electron microscopic measurements showed that the lateral length ranged from a few tens to a few hundred nanometers. Upon reduction by sodium borohydride, whereas the UV-vis absorption profile remained largely unchanged, steady-state photoluminescence measurements exhibited a marked blue-shift and increase in intensity of the emission, due to (partial) removal of phenanthroline-like structural defects within the carbon skeletons. Consistent results were obtained in Raman and 2020-01-01T00:00:00Z2020 Mar2025-04-04T03:25:23.297Z2025-02-19T01:37:50.662ZS-EPMC94175863613305410.1039/c9na00698b