Insights into enhanced electrochemiluminescence of a multiresonance thermally activated delayed fluorescence molecule

Liuqing Yang; Lihui Dong; David Hall; Mahdi Hesari; Yoann Olivier; Eli Zysman-Colman; Zhifeng Ding

doi:10.1002/smm2.1149

Insights into enhanced electrochemiluminescence of a multiresonance thermally activated delayed fluorescence molecule

Liuqing Yang, Lihui Dong, David Hall, Mahdi Hesari, Yoann Olivier^*, Eli Zysman-Colman^*, Zhifeng Ding^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

Abstract

The electrochemiluminescence (ECL) behavior of a multiresonance thermally activated delayed fluorescence molecule has been investigated for the first time by means of ECL-voltage curves, newly designed ECL-time observatory, and ECL spectroscopy. The compound, Mes₃DiKTa, shows complex ECL behavior, including a delayed onset time of 5 ms for ECL generation in both the annihilation pathway and the coreactant route, which we attribute to organic long-persistent ECL (OLECL). Triplet-triplet annihilation, thermally activated delayed fluorescence and uncompensated solution resistance cannot be ruled out as contributing mechanisms to the ECL. A very long ECL emission decay was attributed to OLECL as well. The absolute ECL efficiencies of Mes3DiKTa were enhanced and reached 0.0013% in annihilation route and 1.1% for the coreactant system, which are superior to those of most other organic ECL materials. It is plausible that ECL materials with comparable behavior as Mes3DiKTa are desirable in applications such as ECL sensing, imaging, and light-emitting devices.

Original language	English
Number of pages	14
Journal	SmartMat
Volume	Early View
Early online date	14 Sept 2022
DOIs	https://doi.org/10.1002/smm2.1149
Publication status	E-pub ahead of print - 14 Sept 2022

Keywords

Electrochemiluminescence
Multiresonant thermally activated delayed fluorescence
Organic long-persistent electrochemiluminescence
Triplet-triplet annihilation

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10.1002/smm2.1149Licence: CC BY

Yang_2022_SM_Insighta-enhanced-ECL_CC
Copyright © 2022 The Authors. SmartMat published by Tianjin University and John Wiley & Sons Australia, Ltd. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
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Eli Zysman-colman SRF: New Frontiers in Multi-Resonance Thermally Activated Delayed Fluorescence Emitter Design for Organic Light-Emitting Diodes
Zysman-Colman, E. (PI)
The Royal Society
18/01/21 → 18/03/22
Project: Fellowship
TADF Emitters for OLEDs - Eli Zysman: TADF Emitters for OLEDs
Zysman-Colman, E. (PI)
EPSRC
1/03/17 → 31/03/21
Project: Standard
Blue-Emitting TADF Materials: Blue-Emitting TADF Materials for OLEDs Based on a Lewis Acid-Containing Acceptor
Zysman-Colman, E. (PI)
The Leverhulme Trust
1/08/16 → 30/04/22
Project: Standard

Cite this

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title = "Insights into enhanced electrochemiluminescence of a multiresonance thermally activated delayed fluorescence molecule",

abstract = "The electrochemiluminescence (ECL) behavior of a multiresonance thermally activated delayed fluorescence molecule has been investigated for the first time by means of ECL-voltage curves, newly designed ECL-time observatory, and ECL spectroscopy. The compound, Mes3DiKTa, shows complex ECL behavior, including a delayed onset time of 5 ms for ECL generation in both the annihilation pathway and the coreactant route, which we attribute to organic long-persistent ECL (OLECL). Triplet-triplet annihilation, thermally activated delayed fluorescence and uncompensated solution resistance cannot be ruled out as contributing mechanisms to the ECL. A very long ECL emission decay was attributed to OLECL as well. The absolute ECL efficiencies of Mes3DiKTa were enhanced and reached 0.0013% in annihilation route and 1.1% for the coreactant system, which are superior to those of most other organic ECL materials. It is plausible that ECL materials with comparable behavior as Mes3DiKTa are desirable in applications such as ECL sensing, imaging, and light-emitting devices.",

keywords = "Electrochemiluminescence, Multiresonant thermally activated delayed fluorescence, Organic long-persistent electrochemiluminescence, Triplet-triplet annihilation",

author = "Liuqing Yang and Lihui Dong and David Hall and Mahdi Hesari and Yoann Olivier and Eli Zysman-Colman and Zhifeng Ding",

note = "Funding: Walloon Region, Grant/Award Number:n1117545; Leverhulme Trust, Grant/Award Numbers: RPG‐2016047,SRF\R1\201089; Natural Sciences and Engineering Research Council Canada, Grant/Award Numbers: DG RGPIN‐2018‐06556, SPG STPGP‐2016‐493924; Fonds dela Recherche Scientifiques de Belgique, Grant/Award Numbers: 2.5020.11,F.4534.21; Engineering and Physical Sciences Research Council, Grant/Award Number: EP/P010482/1.",

year = "2022",

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doi = "10.1002/smm2.1149",

language = "English",

volume = "Early View",

journal = "SmartMat",

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AU - Yang, Liuqing

AU - Dong, Lihui

AU - Hall, David

AU - Hesari, Mahdi

AU - Olivier, Yoann

AU - Zysman-Colman, Eli

AU - Ding, Zhifeng

N1 - Funding: Walloon Region, Grant/Award Number:n1117545; Leverhulme Trust, Grant/Award Numbers: RPG‐2016047,SRF\R1\201089; Natural Sciences and Engineering Research Council Canada, Grant/Award Numbers: DG RGPIN‐2018‐06556, SPG STPGP‐2016‐493924; Fonds dela Recherche Scientifiques de Belgique, Grant/Award Numbers: 2.5020.11,F.4534.21; Engineering and Physical Sciences Research Council, Grant/Award Number: EP/P010482/1.

PY - 2022/9/14

Y1 - 2022/9/14

N2 - The electrochemiluminescence (ECL) behavior of a multiresonance thermally activated delayed fluorescence molecule has been investigated for the first time by means of ECL-voltage curves, newly designed ECL-time observatory, and ECL spectroscopy. The compound, Mes3DiKTa, shows complex ECL behavior, including a delayed onset time of 5 ms for ECL generation in both the annihilation pathway and the coreactant route, which we attribute to organic long-persistent ECL (OLECL). Triplet-triplet annihilation, thermally activated delayed fluorescence and uncompensated solution resistance cannot be ruled out as contributing mechanisms to the ECL. A very long ECL emission decay was attributed to OLECL as well. The absolute ECL efficiencies of Mes3DiKTa were enhanced and reached 0.0013% in annihilation route and 1.1% for the coreactant system, which are superior to those of most other organic ECL materials. It is plausible that ECL materials with comparable behavior as Mes3DiKTa are desirable in applications such as ECL sensing, imaging, and light-emitting devices.

AB - The electrochemiluminescence (ECL) behavior of a multiresonance thermally activated delayed fluorescence molecule has been investigated for the first time by means of ECL-voltage curves, newly designed ECL-time observatory, and ECL spectroscopy. The compound, Mes3DiKTa, shows complex ECL behavior, including a delayed onset time of 5 ms for ECL generation in both the annihilation pathway and the coreactant route, which we attribute to organic long-persistent ECL (OLECL). Triplet-triplet annihilation, thermally activated delayed fluorescence and uncompensated solution resistance cannot be ruled out as contributing mechanisms to the ECL. A very long ECL emission decay was attributed to OLECL as well. The absolute ECL efficiencies of Mes3DiKTa were enhanced and reached 0.0013% in annihilation route and 1.1% for the coreactant system, which are superior to those of most other organic ECL materials. It is plausible that ECL materials with comparable behavior as Mes3DiKTa are desirable in applications such as ECL sensing, imaging, and light-emitting devices.

KW - Electrochemiluminescence

KW - Multiresonant thermally activated delayed fluorescence

KW - Organic long-persistent electrochemiluminescence

KW - Triplet-triplet annihilation

U2 - 10.1002/smm2.1149

DO - 10.1002/smm2.1149

M3 - Article

SN - 2688-819X

VL - Early View

JO - SmartMat

JF - SmartMat

ER -

Insights into enhanced electrochemiluminescence of a multiresonance thermally activated delayed fluorescence molecule

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Keywords

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Projects

Eli Zysman-colman SRF: New Frontiers in Multi-Resonance Thermally Activated Delayed Fluorescence Emitter Design for Organic Light-Emitting Diodes

TADF Emitters for OLEDs - Eli Zysman: TADF Emitters for OLEDs

Blue-Emitting TADF Materials: Blue-Emitting TADF Materials for OLEDs Based on a Lewis Acid-Containing Acceptor

Cite this