3D nanostructured Ni(OH)2 microspheres as an efficient immobilization matrix of Ru(bpy)3(2+) for high-performance electrochemiluminescence sensor.

The electrochemistry and electrochemiluminescence (ECL) of novel three-dimensional nanostructured Ru(bpy)(3)(2+)/Ni(OH)(2) microspheres were investigated for the first time. The negatively charged porous Ni(OH)(2) microspheres composed of Ni(OH)(2) nanowires were specifically designed to interact with Ru(bpy)(3)(2+). The large surface area and porous structure of Ni(OH)(2) microspheres enhance loading of Ru(bpy)(3)(2+) and mass transport of the model analyte, tripropylamine (TPA). Excellent ECL performance of the presented sensor was achieved including good stability and wide linear range from 7.7x10(-10) to 3.8x10(-3)M with the detection limit of 2.6x10(-10)M to TPA.