Fluorescence Based Comparative Study of Interaction of Perylene with Nitrogen Doped Graphene Quantum Dots and Graphene Oxide Sheets

摘要

Fluorescence based comparative studies of the interaction of Perylene with nitrogen doped graphene quantum dots (N-GQDs) and graphene oxide (GO) are reported here. N-GQDs were synthesized by a solvothermal method using GO as precursor material. Perylene at a fixed concentration (0.1 μM) was mixed with GO and N-GQDs, separately in DMF solution. It is observed that the Perylene was readily adsorbed on GO following the traditional Lamgmuir isotherm model, while Perylene makes a complex with the functional groups of N-GQDs and transfer electrons to N-GQDs. As a result, the fluorescence intensity of the N-GQDs-Perylene complex was enhanced, while that of GO-Perylene was quenched. This study is useful to isolate chemicals and carcinogenic as well as hazardous pollutant Perylene by adsorption or complex formation.