Two-dimensional graphite-like carbon nitride nanosheets (g-C3N4 NSs) were hybridized with gold nanoparticles (Au NPs) to construct an electrochemiluminescence (ECL) immunosensor. The prepared Au NP-functionalized g-C3N4 NS nanohybrids (Au-g-C3N4 NHs) exhibit strong and stable cathodic ECL activity compared NSs due the important roles of NPs in trapping storing electrons from conduction band NSs, as well preventing high energy electron-induced passivation NSs. On basis improved stability peak...

The preparation, characterization, fluorescence (FL) and electrochemiluminescence (ECL) of graphite-like carbon nitride nanoflake particles (g-C(3)N(4) NFPs) films NFFs) have been reported. Highly water-dispersible g-C(3)N(4) NFPs with a height ~5 to 35 nm lateral dimension ~40 220 extracted from bulk materials by chemical oxidation. New, stable defined NFFs can be easily obtained drying on certain hydrophilic substrates such as glass or electrode surfaces. Both good FL activities, i.e. they...

Gas-involving cancer theranostics have attracted considerable attention in recent years due to their high therapeutic efficacy and biosafety. We reviewed the significant advances development of stimuli-responsive gas releasing molecules (GRMs) nanogenerators for bioimaging, targeted controlled therapy, gas-sensitized synergistic therapy. focused on gases with known anticancer effects, such as oxygen (O2), carbon monoxide (CO), nitric oxide (NO), hydrogen sulfide (H2S), (H2), sulfur dioxide...

Abstract Various beneficial properties of graphitic carbon nitride (g ‐ CN) have been discovered during the promotion its visible‐light‐driven photocatalytic activity for water splitting. These enable g‐CN working as a sensing signal transducer with multiple output modes. In this review, state‐of‐the‐art applications tailored nanostructures in recent years are presented. Initially, nanoarchitectures featuring large surface areas, abundance active sites, and high dispersity presented along...

Almost all current electrochemiluminescent reagents require real-time electrochemical stimulation to emit light. Here, we report a novel reagent, nitrogen-deficient graphitic carbon nitride (CNx), that can afterglow electrochemiluminescence (ECL) after cessation of electric excitation. CNx obtained by post-thermal treatment (CN) with KSCN has cyanamide group and nitrogen vacancy, which created defects trap electrically injected electrons. The trapped electrons slowly release react...

Electrochemiluminescence of the luminol-O(2) system in an electrolyte-free N,N-dimethylformamide (DMF)-dipropylamine (DPA) cosolution is induced by formation a carbamate ionic liquid (IL) from reaction between CO(2) and DPA, on basis which facile ECL sensor for measuring atmospheric has been developed. This sensing method shows several advantages detection CO(2), such as high safety, selectivity, wide linear response range, good sensitivity. The gas was found to have range 100 ppm v/v% limit...

A novel permeability gate-based electrochemiluminescent (ECL) aptasensor has been constructed by utilizing target-responsive polyelectrolyte–aptamer film deposited on the solid-state ECL electrode to control rate of diffusion a coreactant that triggers ECL.

Proteases and nucleases are enzymes heavily involved in many important biological processes, such as cancer initiation, progression, metastasis; hence, they indicative of potential diagnostic biomarkers. Here, we demonstrate a new label free sensitive electrochemiluminescent (ECL) sensing strategy for protease nuclease assays that utilize target-triggered desorption programmable polyelectrolyte films assembled on graphite-like carbon nitride (g-C3N4) film to regulate the diffusion flux...

Uric acid (UA) deposition in human body is very harmful, since it may induce gout. Therefore, would be of great significance to catalyze the degradation UA body. Herein, platinum nanoparticles (PtNPs) were found an effective mimic uricase oxidation UA. PtNPs could lower activation energy (i.e., from 139.49 kJ mol−1 61.73 mol−1), and thus increase reaction rate constant dramatically (e.g., by catalysis 2.63 mg L−1 PtNPs, at 37 °C was 5.85 × 10−4 s−1, which almost 29000 times higher than that...

Surface-enhanced Raman Scattering (SERS) is a sensitive and nondestructive technique that provides fingerprint structural information of molecules. Designing constructing stable SERS substrates great significance for the application technique. In this study, single-layer carbon-based dots (CDs) are used as capping agents to synthesize gold nanoparticles (AuNPs/CDs) manganese dioxide nanosheets (MnO2/CDs), which then hybridized through simple cocentrifugation method. After hybridization,...

This work reports that ammonia (NH(3)) can be used as an efficient co-reactant for tris(2,2'-bipyridine)ruthenium(II) (Ru(bpy)(3)(2+)) electrochemiluminescence (ECL) in ionic liquids (ILs), on the basis of which a signal-on ECL sensor directly detecting gaseous NH(3) has been developed. The very high sensitivity, with detection limit 10 ppt (at signal-to-noise ratio 3) without any preconcentration. sensitivity is mainly due to zero background Ru(bpy)(3)(2+) ILs, strong activity NH(3), and...

Abstract Single‐layer carbon‐based dots (SCDs) were chosen as a model to investigate the effect of C‐related dangling bonds with spin S =1/2 and functional groups on electrochemiluminescent (ECL) fluorescent (FL) properties CDs. The SCDs tuned by chemical reduction NaBH 4 . There have several main findings via investigating ECL FL before after reduction. First, CDs are highly dependent their concentration, luminescent resonance energy transfer is observed in studies when concentration high....

Abstract Searching biocompatible electrochemiluminescence (ECL) co‐reactants for tris(2,2’‐bipyridyl)ruthenium(II) (Ru(bpy) 3 2+ ), 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 new enhancement mechanisms Ru(bpy) ECL. In this Minireview, we discuss current progress ‐nanomaterial co‐reactant with an emphasis on strategies developed. Four...

Abstract The effects of defect states on the fluorescence (FL) and electrochemiluminescence (ECL) properties graphite phase carbon nitride (g‐CN) are systematically investigated for first time. g‐CN nanosheets (CNNSs) obtained at different condensation temperatures used as study models. It can be found that all CNNSs have two kinds states, one is originated from edge (labeled CN‐defect) other attributed to partially carbonization regions C‐defect). Both substantially affect luminescent...

A single-nanoparticle plasmonic sensor for the sensitive detection of gas molecules (NO2) has been constructed. Taking advantage active molecular plasmonics, analyte selectively triggers a measurable spectral shift ferrocene-modified single gold nanorods.

A novel portable SO2 gas sensor based on ionic liquid (IL) mediated electrochemiluminescence (ECL) for detecting at the ppb levels has been developed. The sensing system detection is strong quenching effect of ECL tris(2,2′-bipyridine)ruthenium(II) (Ru(bpy)32+)/O2 coreactant in IL film. Over potential window between −1.0 and +1.3 V, O2 can act as an effective Ru(bpy)32+ ILs, giving a bright emission. Ru(bpy)32+/O2 be strongly inhibited by through direct excited state luminophore, i.e....