Fabrication of carbon quantum dots and their application for efficient detecting Ru(bpy)32+ in the solution

Carbon quantum dots (CDs) with an average size of less than 10 nm were prepared by ionic liquid-assisted electrochemical exfoliation of graphite electrode, and developed as photoluminescence (PL) and electrochemiluminescence (ECL) probes for efficient detecting Ru(bpy)32+ in the solution based on the quenching of the PL emission of CDs and enhanced ECL of Ru(bpy)32+, respectively. The PL and ECL probes exhibited a detection limit of 0.72 and 0.43 μM, respectively. The PL and ECL properties of CDs and Ru(bpy)32+ will provide a new route to study the novel materials and broaden the use of them in analyte detection.

Carbon quantum dots were first used as photoluminescence (PL) and electrochemiluminescence (ECL) probes for efficient detecting Ru(bpy)32+ in the solution.Figure optionsDownload as PowerPoint slide