Electrochemiluminescence of iridium complexes with ammonia in dimethylformamide and its analytical application for ammonia detection

Li, Chunyang; Zhu, Shengnan; Ding, Yuqiang; Song, Qijun

doi:10.1016/j.jelechem.2012.07.011

Cited by 16 publications

(6 citation statements)

References 44 publications

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“…The ECL intensity of Ru(bpy) 3 2+ with the same volume of precursor (black line) and BNQDs (red line) was shown in Figure S3. It could be seen that the ECL was only enhanced dozens of times with precursor as coreactant compared with individual Ru(bpy) 3 2+ , it was caused by the ammonia of the precursor which could also be used as coreactant of Ru(bpy) 3 2+ . , However, the enhanced trend was inferior to that obtained with BNQDs as coreactant. As we know, BNQDs had similar structure to the graphite and had rich amino group; therefore, the enhanced mechanism may be from the catalytic oxidation of surface functional group of BNQDs (denoted as amino) to the Ru(bpy) 3 2+ .…”

Section: Resultsmentioning

confidence: 91%

Boron Nitride Quantum Dots as Efficient Coreactant for Enhanced Electrochemiluminescence of Ruthenium(II) Tris(2,2′-bipyridyl)

et al. 2018

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In the present work, an enhanced and stable anodic electrochemiluminescence (ECL) was observed from a suspension of boron nitride quantum dots (BNQDs) and Ru(bpy), which had a 400-fold enhancement compared with individual Ru(bpy). Interestingly, different from the previous research on BNQDs as a type of optical probe, BNQDs were demonstrated as an efficient coreactant of Ru(bpy)-based ECL for the first time and confirmed by collecting the ECL spectra. The amino-bearing groups and the electrocatalytic effect of the BNQDs endowed them as potential coreactants for ECL of Ru(bpy), and the possible mechanism of the electrode surface reaction was discussed. Several factors including electrode material, the pH of the buffer solution, and the amount of BNQDs were investigated and also further confirmed the role of the BNQDs in the proposed Ru(bpy)/BNQDs system. On the basis of the quenching effect between the excited state of Ru(bpy) and the oxidation form of DA in the ECL system of Ru(bpy)/BNQDs, the ECL sensing platform for DA was successfully established. The proposed ECL system with the outstanding ECL efficiency may hold great potential in the bioanlysis because of the biocompatibility and good stability of BNQDs.

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Section: Resultsmentioning

confidence: 91%

Boron Nitride Quantum Dots as Efficient Coreactant for Enhanced Electrochemiluminescence of Ruthenium(II) Tris(2,2′-bipyridyl)

et al. 2018

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“…Here, the formation of ammonia from l -Phe using phenylalanine ammonia-lyase (PAL) and the production of ECL signal of Ru(bpy) 3 2+ in combination with ammonia as a co-reactant were benefited for ECL analysis. The ECL process of Ru-(bpy) 3 2+ in the presence of NH 3 can be explained based on the previous studies in the literature regarding the ECL processes of (pq) 2 Ir(acac) in the presence of NH 3 , 52 Ru-(bpy) 3 2+ and TPA. 53,54 The ECL process can be clarified as follows:Ru(bpy) 3 2+ − e − → Ru(bpy) 3 3+ NH 3 − e − → NH 3 + ˙NH 3 + ˙ → NH 2 ˙ + H + Ru(bpy) 3 3+ + NH 2 ˙ → Ru(bpy) 3 2+ ˙ + productsRu(bpy) 3 2+ ˙ → Ru(bpy) 3 2+ + hν …”

Section: Resultsmentioning

confidence: 99%

An ECL sensor combined with a paper electrode for the determination of phenylalanine

Torul

Kayiş

BoyacÎ¹

et al. 2022

Analyst

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“…During the last few years, different authors have tested the application of different iridium(III) chelates in the detection or determination of different analytes. Song et al [ 100 ] have reported ECL studies of four iridium complexes, in the presence of ammonia as the co-reactant in N , N -dimethylformamide solution. Among the studied Ir(ppy) 3 , Ir(ppy) 2 (acetylaniline), Ir(ppy) 2 (N-phenylmethacrylamide), and Ir(pq) 2 (acac) complexes, the latter was found to exhibit the highest ECL efficiency with NH 3 .…”

Section: Ecl Analytics With Use Of the Cyclometalated Iridium(iii) Chmentioning

confidence: 99%

Cyclometalated iridium(III) chelates—a new exceptional class of the electrochemiluminescent luminophores

Kapturkiewicz

2016

Anal Bioanal Chem

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Recent development of the phosphorescent cyclometalated iridium(III) chelates has enabled, due to their advantageous electrochemical and photo-physical properties, important breakthroughs in many photonic applications. This particular class of 5d6 ion complexes has attracted increasing interest because of their potential application in electroluminescence devices with a nearly 100 % internal quantum efficiency for the conversion of electric energy to photons. Similar to electroluminescence, the cyclometalated iridium(III) chelates have been successfully applied in the electricity-to-light conversion by means of the electrochemiluminescence (ECL) processes. The already reported ECL systems utilizing the title compounds exhibit extremely large ECL efficiencies that allow one to envisage many potential application for them, especially in further development of ECL-based analytical techniques. This review, based on recently published papers, focuses on the ECL properties of this very exciting class of organometallic luminophores. The reported work, describing results from fundamental as well as application-oriented investigations, will be surveyed and briefly discussed.Graphical abstractDepending on the chemical nature of the cyclometalated irdium(III) chelate different colours of the emitted light can be produced during electrochemical excitation.

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Electrochemiluminescence of iridium complexes with ammonia in dimethylformamide and its analytical application for ammonia detection

Cited by 16 publications

References 44 publications

Boron Nitride Quantum Dots as Efficient Coreactant for Enhanced Electrochemiluminescence of Ruthenium(II) Tris(2,2′-bipyridyl)

Boron Nitride Quantum Dots as Efficient Coreactant for Enhanced Electrochemiluminescence of Ruthenium(II) Tris(2,2′-bipyridyl)

An ECL sensor combined with a paper electrode for the determination of phenylalanine

Cyclometalated iridium(III) chelates—a new exceptional class of the electrochemiluminescent luminophores

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