A novel electrochemiluminescence biosensor based on S-doped yttrium oxide ultrathin nanosheets for the detection of anti-Dig antibodies.

New S-doped yttrium oxide ultrathin nanosheets (NSs) were synthesized which had good electrochemiluminescence (ECL) properties. Through combining these NSs with small molecule linked DNA as the substrate, a novel ECL biosensor was constructed for the detection of protein biomarkers with an acceptable performance.