01250nas a2200217 4500008004100000022001400041245016800055210006900223260000800292300001600300490000600316520043000322100002200752700002200774700002400796700001900820700001900839700001900858700002500877856013000902 2014 eng d a2040-336400aLarge scale synthesis of graphene quantum dots (GQDs) from waste biomass and their use as an efficient and selective photoluminescence on-off-on probe for Ag+ ions0 aLarge scale synthesis of graphene quantum dots GQDs from waste b cMAR a11664-116700 v63 a

Graphene quantum dots (GQDs) are synthesized from bio-waste and are further modified to produce amine-terminated GQDs (Am-GQDs) which have higher dispersibility and photoluminescence intensity than those of GQDs. A strong fluorescence quenching of Am-GQDs (switch-off) is observed for a number of metal ions, but only for the Ag+ ions is the original fluorescence regenerated (switch-on) upon addition of L-cysteine.

1 aSuryawanshi, Anil1 aBiswal, Mandakini1 aMhamane, Dattakumar1 aGokhale, Rohan1 aPatil, Shankar1 aGuin, Debanjan1 aOgale, Satishchandra uhttps://library.ncl.res.in/content/large-scale-synthesis-graphene-quantum-dots-gqds-waste-biomass-and-their-use-efficient-and