Label-Free and Ultrasensitive Electrochemiluminescent Immunosensor Based on Novel Luminophores of CeSnO Nanocubes.

In this research article, a novel and simple label-free electrochemiluminescence (ECL) immunosensor using cerium stannite (CeSnO) nanocubes as brand-new ECL emitters has been suggested for the first time. CeSnO nanocubes prepared by a simple hydrothermal method displayed bright ECL emission, promising biocompatibility, low noxiousness, and perfect stability. On comparison of ECL and photoluminescence (PL) spectra, a surface-state mechanism was proposed to be involved in the ECL emission.

Electrochemiluminescence behaviour of silver/ZnIn2S4/reduced graphene oxide composites quenched by Au@SiO2 nanoparticles for ultrasensitive insulin detection.

Herein, an effective electrochemiluminescence resonance energy transfer (ECL-RET) immunosensing strategy was proposed using silver/ZnInS/reduced graphene oxide composites (Ag/ZnInS/RGO) as the ECL donor and gold decorated silicon dioxide nanoparticles (Au@SiO NPs) as the ECL acceptor. ZnInS nanosheets (NSs), which exhibited strong ECL emission in the presence of potassium persulfate (KSO) with ECL spectral band at 370-720 nm, were in situ grew on the RGO surface (ZnInS/RGO) by a facile one-step hydrothermal method. Integrating with the morphological and electrical superiorities of RGO and AgNPs, the ECL emission of ZnInS at 551 nm was dramatically enhanced.

Electrochemiluminescence behaviour of silver/silver orthophosphate/graphene oxide quenched by Pd@Au core-shell nanoflowers for ultrasensitive detection of insulin.

Herein, a highly efficient electrochemiluminescence resonance energy transfer (ECL-RET) immunosensor was established for ultrasensitive insulin detection. Silver/silver orthophosphate/graphene oxide composites (Ag/AgPO/GO) were prepared as sensing platform for capture-antibody (Ab) incubation. AgPO is a novel ECL donor whose emission could be remarkably enhanced by the synergetic assistance of GO with Ag NPs.