Electrochemical serotonin sensing interface based on double-layered membrane of reduced graphene oxide/polyaniline nanocomposites and molecularly imprinted polymers embedded with gold nanoparticles.

Highlights: [•] The membrane of rGO/PANI was prepared for enhancing the sensitivity of sensor. [•] Functionalized AuNPs were proposed to fabricate the conductive AuNPs@MIPs. [•] The sensor could avoid the interferences caused by AA, DA, UA, and EP. [•] The sensor was used for sensitive and selective detection of 5-HT in real samples. [ABSTRACT FROM AUTHOR]