Layer-by-layer assembled multilayer films of reduced graphene oxide/gold nanoparticles for the electrochemical detection of dopamine

► Graphene/gold nanoparticle films were fabricated on a glassy carbon electrode. ► The modified electrode exhibited good performance for the detection of dopamine. ► The detection limit for dopamine was 0.02 μM. ► The sensor was developed for the selective detection of dopamine and uric acid. ► Moreover, the proposed sensor has a long-term stability.