Preparation of Nafion-Ru(bpy)32+-Chitosan/Gold Nanoparticles Composite Film and Its Electrochemiluminescence Application

A self-assembled net structured film for the immobilization of tris(2,2′-bipyridyl)ruthenium(ii) and its ultrasensitive electrogenerated chemiluminescent sensing for phenol

“…Till now, plenty of approaches for the effective immobilization of tris(2,2 0 -bipyridyl)ruthenium(II) (Ru(bpy) 3 2+ ), one of the most extensively studied ECL probes, have been proposed. 4 These include the direct attachment of Ru(bpy) 3 2+ to an electrode surface using the Langmuir-Blodgett technique 5 or a selfassembly method, 6 incorporation of Ru(bpy) 3 2+ into the ionomer Naon or Naon-derived lms, 7 and the sol-gel method. 8 Additionally, the use of nanomaterials to obtain signal enhancement has been one of the most interesting research elds in the development of the solid-state ECL technique.…”

An overview of luminescent bio‐based composites

“…The incorporation of Ru(II) complex moieties inside chitosan matrix allowed their use as luminous membranes for the preparation of an electrochemiluminescence (ECL) optic sensor with good sensitivity for the detection of oxalic acid. Recently, Qu et al and Cai et al proposed novel approaches to fabricate tris(2,2′‐bipyridyl)ruthenium(II) (Ru(bpy) 3 2+ )–chitosan composite coating films for graphite and glassy carbon electrode surfaces, respectively. The introduction of gold NPs, which act as conducting pathways to connect Ru(bpy) 3 2+ sites to the electrode in the membranes, in the chitosan composite films results in accelerated charge transport through the film and improved inductivity and stability.…”

“…Indeed, chitosan matrices have already been combined with distinct luminescent fillers (including metal complexes, QDs, metal nanostructures (NPs and metal clusters), metal oxides (ZnO), and carbon nanostructures) that retain their luminescent properties or that in some cases even increase their quantum yield. These chitosan‐based luminescent materials were firstly used as coatings for electrodes . Nevertheless, their preparation in other forms as regular films, nanospheres/microspheres, or only as capping agent have also been reported as strategies to get advanced luminescent bio‐based materials for distinct applications.…”

The electrochemical oxidation of pentachlorophenol and its sensitive determination at chitosan modified carbon paste electrode

“…Chitosan (CS) with unique advantage of nontoxic ity, biocompatibility, high mechanical strength and excellent membrane forming ability [22] has been widely used to design electrochemical sensors [23][24][25][26]. And to our knowledge, few reports concerned about PCP detection among those sensors.…”