Tuning Dimensionality of Benzimidazole Aggregates by Using Tetraoctylammonium Bromide: Enhanced Electrochemiluminescence Studies

Abstract

Exploring the depolymerization strategy of liposoluble luminophores in the aqueous phase is vital for the development of electrochemiluminescence (ECL). In this work, tetraoctylammonium bromide (TOAB) with four long hydrophobic chains and short hydrophilic ends is used as a template to limit the aggregation of benzimidazole (BIM). By adjusting the loading of BIM on the hydrophobic chains of TOAB, a two-dimensional lamellar BIM/TOAB is formed, the ECL intensity of which is 6.4 times higher than that of the aggregated BIM (H 2 O 2 as the coreactant). In terms of ECL spectroscopies, cyclic voltammetry , ECL transients, and the adjustment of the scanning potential range, the ECL mechanism is thoroughly studied. This work provides a new way to depolymerize organic luminophores and reveals a possible pathway in the annihilation ECL mechanism.

Signal-Enhanced Immunosensor-Based MOF-Derived ZrO2 Nanomaterials as Electrochemiluminescence Emitter for D-Dimer Detection

“…Typically, ECL luminescence can be classified into two types: annihilation and coreactant participation. – Co-reactant participation ECL signals are generated through a chemical reaction between the luminophore and a coreactant with strong oxidation–reduction properties. To achieve a desirable ECL signal, it is important to not only explore luminophores with excellent ECL performance but also enhance the oxidation–reduction rate of the coreactant.…”

A metal–organic framework regulated graphdiyne-based electrochemiluminescence sensor with a electrocatalytic self-acceleration effect for the detection of di-(2-ethylhexyl) phthalate

“…15,16 ECL technology is rooted in the mechanism of electron transfer and energy emission occurring at electrodes within electrochemical systems through redox reactions. 17,18 Hence, the luminescent materials residing on the electrode surface significantly impact the analytical capabilities of electrochemical luminescence sensors. 19 Organic dyes, quantum dots, and gold nanoclusters represent the prominent examples of commonly employed luminescent materials within this context.…”

Bandgap-Regulated Electrochemiluminescence Enhancement Strategy for Florfenicol Detection Based on ZrCuO3: A Multimodal Luminophore

“…In numerous reports, an ECL reagent typically exhibits only single-type or single-modal ECL emission, which can be categorized as annihilation ECL and co-reactant participation ECL. − Co-reactant participation ECL includes anodic emission with tripropylamine (TPrA) as the co-reactant and cathodic emission with K 2 S 2 O 8 as the co-reactant, among others. However, single-modal ECL emission may lead to inaccurate output information due to environmental factors, operational errors, and other variables.…”