An ultrasensitive and switch-on platform for aflatoxin B1 detection in peanut based on the fluorescence quenching of graphene oxide-gold nanocomposites

Graphene oxide-gold nanocomposites (GO/AuNCs) were prepared and used as a novel fluorescence quenching platform for ultrasensitive detection of aflatoxin B1 (AFB1) coupled with hybridization chain reaction (HCR) amplification.244