Abstract
In this work, a novel electrochemiluminescence (ECL) signal amplification strategy was proposed based on SiO2nanoparticles modified with ionic liquids (ILs) as a coreactant for Ru(bpy)32+ ECL. The defects of silica nanospheres could combine with H2O and act as the oxidation center of ECL reaction to enhance the anodic ECL of Ru(bpy)32+. The modification of ILs on the surface of SiO2 nanoparticles could further enhance Ru(bpy)32+ ECL due to its excellent conductive activity and the adsorption ability for Ru(bpy)32+. ECL resonance energy transfer (RET) between MnO2 nanosheets and Ru(bpy)32+ could efficiently quench the ECL signal. In the presence of glutathione (GSH), the redox reaction between MnO2 nanosheets and GSH could cut the pathway for the RET and restore the ECL signal. As a consequence, the designed sensor exhibited outstanding performance for the detection of GSH in the concentration range of 50 nM to 50 μM with a low detection limit of 41.8 nM. Importantly, this work explored the possibility of using green and non-toxic coreactants for ECL, which will provide new avenue for the fabrication of biosensor.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Journal of Photochemistry and Photobiology A: Chemistry
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
