▎ 摘　　要

The interactive behavior of graphene quantum dots towards noble metal surfaces was studied by using corre-sponding noble metal nanoparticles as representative of these surfaces. Graphene quantum dots and metal nanoparticles of gold, silver, platinum, and palladium were synthesized and characterized by various techniques including UV-Vis spectroscopy, steady-state fluorescence spectroscopy, SEM, TEM, DLS, zeta potential, and XRD etc. Fixed concentration of graphene quantum dots was titrated against varying concentrations of noble metal nanoparticles and their interactions were examined by observing changes in the UV-Vis and fluorescence spectra, hydrodynamic radius and zeta potential etc. The quenching constants obtained by Stern-Volmer plots indicated strong interactions between the two moieties, where palladium nanoparticles showed strongest interaction among all. Non-linear Stern-Volmer plots were observed for gold and silver nanoparticles, whereas linear plots were observed for platinum and palladium nanoparticles. A change in the hydrodynamic radius and zeta potential of these moieties was also observed with increasing concentration of nanoparticles, which also revealed the interactions between the two moieties. This work will potentially help in designing new applications of these hybrids as sensors for detection of various moieties.