▎ 摘　　要

The electron interaction among the noncovalently engineered graphenc-methylene blue(MB) nanocomposite with a dipolar pull-push hybrid model was studied. The pi-pi interaction between reduced graphene oxide(rGO) and MB molecule was studied by (HNMR)-H-1 spectroscopy. The electrochemical investigation indicates MB has a stronger electron transfer interaction with rGO than with GO. The ability of graphene-MB nanocomposites to undergo photoinduced electron transfer was confirmed from the capability of the nanocomposites coated electrode to generate photocurrent in a photoelectrochemical cell. The role of graphene as electron acceptor in the opto-electronic assembly was discussed.