Tris(2,2’‐bipyridyl)ruthenium(II)‐Nanomaterial Co‐Reactant Electrochemiluminescence

Abstract

Searching biocompatible electrochemiluminescence (ECL) co‐reactants for tris(2,2’‐bipyridyl)ruthenium(II) (Ru(bpy)32+), a classical ECL reagent, has attracted extensive attention to expanding its analytical applications and improving sensing performances. Advances in nanomaterial science promote the discovery of novel co‐reactants and new enhancement mechanisms for Ru(bpy)32+ ECL. In this Minireview, we discuss the current progress in Ru(bpy)32+‐nanomaterial co‐reactant ECL with an emphasis on enhancement mechanisms and sensing strategies developed. Four kinds of nanomaterials for Ru(bpy)32+ ECL enhancement are classified into two groups, according to the working mechanisms and presented in the order of novelty. Perspectives on the promises and challenges facing this field are also discussed.

DNA-Modified Electrochemiluminescent Tris(4,4’-Dicarboxylicacid-2,2’-Bipyridyl)Ruthenium(II) Dichloride and Assistant DNA-Modified Carbon Nitride Quantum Dots for Hg2+ Detection

“…Recently, some carbon-based QDs including carbon nanodots, nitrogen-doped carbon nanodots, , graphene QDs, , and so forth have been widely used as novel coreactants of the ruthenium complex because of their analogous enhancement mechanism of molecular coreactants. , Inspired by the outstanding properties such as good biocompatibility, nontoxicity, simple preparation, and excellent stability of g-C 3 N 4 QDs, we carried out the first investigation on the anodic Ru­(dcbpy) 3 2+ ECL influenced by g-C 3 N 4 QDs, as it has been reported that g-C 3 N 4 QDs played a similar coreactant role in ECL signal enhancement of the Ru­(bpy) 3 2+ system . As previous research reported, , the anodic ECL signal of the bare GCE obtained from the buffer system containing 1 mM Ru­(dcbpy) 3 2+ is relatively weak (Figure A, curve a, ∼270 a.u.).…”

Aggregation-Induced Emission in Electrochemiluminescence: Advances and Perspectives

“…The overall charge has been kept neutral to promote aggregation in polar media while the hydrophilic chains have been introduced to promote their solubility in water. While Pt-PEG is almost insoluble in water, Pt-PEG 2 is able to form a stable orange colloidal dispersion in pure aqueous solutions and its ECL performance outperforms the efficiency of the classical ECL reference [Ru(bpy) 3 ] 2+ [7,16,39].…”

Aggregation-Induced Emission in Electrochemiluminescence: Advances and Perspectives

“…The overall charge has been kept neutral to promote aggregation in polar media while the hydrophilic chains have been introduced to promote their solubility in water. While Pt-PEG is almost insoluble in water, Pt-PEG 2 is able to form a stable orange colloidal dispersion in pure aqueous solutions and its ECL performance outperforms the efficiency of the classical ECL reference [Ru(bpy) 3 ] 2+ [7,16,39].…”