Toward mechanistic understanding of electrochemiluminescence generation by tris(2,2′-bipyridyl)ruthenium(II) and peroxydisulfate

Zhou, Ping; Fu, Wenxuan; Ding, Lurong; Yan, Yajuan; Guo, Weiliang; Su, Bin

doi:10.1016/j.electacta.2022.141716

Cited by 18 publications

(4 citation statements)

References 35 publications

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“…The striking difference between S 2 O 8 2– and TPrA is that an heterogeneous mechanism is not possible and the reduction of the Ru(bpy) 3 2+ to Ru(bpy) 3 + is essential. This has been demonstrated experimentally by labeling Ru(bpy) 3 2+ on microbeads, and the imaging analysis by a microscope did not reveal any ECL emission when the S 2 O 8 2– was the coreactant [ 61 ]. This further confirms the great importance of using TPrA for the ECL imaging of cells or large biological entities [ 62 – 64 ].…”

Section: Ecl Systemsmentioning

confidence: 97%

From theory to practice: understanding the challenges in the implementation of electrogenerated chemiluminescence for analytical applications

Giagu,

Fracassa,

Fiorani

et al. 2024

Microchim Acta

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Electrogenerated chemiluminescence (ECL) stands out as a remarkable phenomenon of light emission at electrodes initiated by electrogenerated species in solution. Characterized by its exceptional sensitivity and minimal background optical signals, ECL finds applications across diverse domains, including biosensing, imaging, and various analytical applications. This review aims to serve as a comprehensive guide to the utilization of ECL in analytical applications. Beginning with a brief exposition on the theory at the basis of ECL generation, we elucidate the diverse systems employed to initiate ECL. Furthermore, we delineate the principal systems utilized for ECL generation in analytical contexts, elucidating both advantages and challenges inherent to their use. Additionally, we provide an overview of different electrode materials and novel ECL-based protocols tailored for analytical purposes, with a specific emphasis on biosensing applications. Graphical abstract

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Section: Ecl Systemsmentioning

confidence: 97%

From theory to practice: understanding the challenges in the implementation of electrogenerated chemiluminescence for analytical applications

Giagu,

Fracassa,

Fiorani

et al. 2024

Microchim Acta

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“…We also examined the possibility of ECL with ‘reductive‐oxidation’ co‐reactants, peroxydisulfate (S 2 O 8 2− ) and benzoyl peroxide (BPO). When reduced, these co‐reactants form strong oxidants that can react with suitable reduced luminophores to generate their electronically excited states (Schemes S2 and S3) [27e,33] . Using 100 μM [Cr(L Mes ) 3 ] and 10 mM co‐reactant, no ECL above the blank response was observed with BPO.…”

Section: Figurementioning

confidence: 99%

Electrochemiluminescence of a First‐Row d⁶ Transition Metal Complex

Doeven,

Connell,

Sinha

et al. 2024

Angewandte Chemie

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We report the electrochemiluminescence (ECL) of a 3d6 Cr(0) complex ([Cr(LMes)3]; λem = 735 nm) with comparable photophysical properties to those of ECL‐active complexes of 4d6 or 5d6 precious metal ions. The electrochemical potentials of [Cr(LMes)3] are more negative than those of [Ir(ppy)3] and render the [Cr(LMes)3]* excited state inaccessible through conventional co‐reactant ECL with tri‐n‐propylamine or oxalate. ECL can be obtained, however, through the annihilation route in which potentials sufficient to oxidise and reduce the luminophore are alternately applied. When combined with [Ir(ppy)3] (λem = 520 nm), the annihilation ECL of [Cr(LMes)3] was greatly enhanced whereas that of [Ir(ppy)3] was diminished. Under appropriate conditions, the relative intensities of the two spectrally distinct emissions can be controlled through the applied potentials. From this starting point for ECL with 3d6 metal complexes, we discuss some directions for future development.

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“…The efficient coupling of thermodynamically and kinetically favored redox reactions triggers a flux of electrons from the anodic to the cathodic pole of the diodes, switching on each LED. Furthermore, an additional light source based on an ECL mechanism, [43,44] taking place at the anode of the hybrid BPE, was integrated. Such a multicolor light-emitting array was designed by coupling the spontaneous oxidation of Mg with the kinetically favored reduction of protons on Pt and the interfacial reductive-oxidative mechanism of the Ru(bpy) 3 2 + / S 2 O 8 2À system (Scheme 1).…”

Section: Introductionmentioning

confidence: 99%

Wireless Multimodal Light‐Emitting Arrays Operating on the Principles of LEDs and ECL

Liu,

Arias‐Aranda,

et al. 2024

ChemPhysChem

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Electrochemistry‐based light‐emitting devices have gained considerable attention in different applications such as sensing and optical imaging. In particular, such systems are an interesting alternative for the development of multimodal light‐emitting platforms. Herein we designed a multicolor light‐emitting array, based on the electrochemical switch‐on of light‐emitting diodes (LEDs) with a different intrinsic threshold voltage. Thermodynamically and kinetically favored coupled redox reactions, i.e. the oxidation of Mg and the reduction of protons on Pt, act as driving force to power the diodes. Moreover, this system enables to trigger an additional light emission based on the interfacial reductive‐oxidative electrochemiluminescence (ECL) mechanism of the Ru(bpy)32+/S2O82‐ system. The synergy between these light‐emission pathways offers a multimodal platform for the straightforward optical readout of physico‐chemical information based on composition changes of the solution.

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Toward mechanistic understanding of electrochemiluminescence generation by tris(2,2′-bipyridyl)ruthenium(II) and peroxydisulfate

Cited by 18 publications

References 35 publications

From theory to practice: understanding the challenges in the implementation of electrogenerated chemiluminescence for analytical applications

From theory to practice: understanding the challenges in the implementation of electrogenerated chemiluminescence for analytical applications

Electrochemiluminescence of a First‐Row d⁶ Transition Metal Complex

Wireless Multimodal Light‐Emitting Arrays Operating on the Principles of LEDs and ECL

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Toward mechanistic understanding of electrochemiluminescence generation by tris(2,2′-bipyridyl)ruthenium(II) and peroxydisulfate

Cited by 18 publications

References 35 publications

From theory to practice: understanding the challenges in the implementation of electrogenerated chemiluminescence for analytical applications

From theory to practice: understanding the challenges in the implementation of electrogenerated chemiluminescence for analytical applications

Electrochemiluminescence of a First‐Row d6 Transition Metal Complex

Wireless Multimodal Light‐Emitting Arrays Operating on the Principles of LEDs and ECL

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Electrochemiluminescence of a First‐Row d⁶ Transition Metal Complex