Paper-based electrochemiluminescence device for the rapid estimation of trimethylamine in fish via the quenching effect of thioglycolic acid-capped cadmium selenide quantum dots.

A paper-based electrochemiluminescence device (µPAD-ECL) for the estimation of trimethylamine (TMA) concentration in fish was developed using tris(2,2'-bipyridyl)ruthenium(II) complex coupled with water soluble thioglycolic acid-capped CdSe quantum dots on the inkjet-printed paper-based device. The quenching effect of tertiary amines on the ECL intensity was found to be sensitive and concentration dependent. This effect allows the measurement of TMA at low concentrations.

Enhanced electrogenerated chemiluminescence of tris(2,2'-bipyridyl)ruthenium(II) system by l-cysteine-capped CdTe quantum dots and its application for the determination of nitrofuran antibiotics.

This paper reports a new approach to enhance the electrogenerated chemiluminescence (ECL) of the tris(2,2'-bipyridyl)ruthenium(II) (Ru(bpy)3(2+)) system using resonance energy transfer with l-cysteine-capped cadmium telluride quantum dots (CdTe-QDs) in aqueous solution. The oxidative peak signal of Ru(bpy)3(2+) occurred at a voltage of 1.10V when the potential was cycled between 0.