Mechanistic insights into graphene quantum dots-mediated regulation of single-atom nanozyme activity for homogeneous dual-mode detection of acetamiprid.
A homogeneous colorimetric/ratiometric fluorescence biosensor was developed for acetamiprid (Ace) detection based on graphene quantum dots (GQDs)-regulated Fe/Mn-N-C single-atom nanozyme (SAzyme) activity. Aptamer-functionalized SAzymes with high peroxidase-like activity were hybridized with complementary DNA-modified...