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Recent Chemistry Research on Electrochemiluminescence
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Recent Chemistry Research on Electrochemiluminescence

A special issue of Molecules (ISSN 1420-3049). This special issue belongs to the section "Photochemistry".

Deadline for manuscript submissions: closed (31 December 2023) | Viewed by 4700

Special Issue Editors

Prof. Dr. Baohua Zhang

E-Mail Website
Guest Editor
Center for Advanced Analytical Science, School of Chemistry and Chemical Engineering, Guangzhou Key Laboratory of Sensing Materials & Devices, Guangzhou University, Guangzhou, China
Interests: electrochemiluminescence; electrogenerated chemiluminescence; sensing; biosensing; thermally activated delayed fluorescence
Prof. Dr. Li Niu

E-Mail Website
Guest Editor
1. School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China
2. School of Chemical Engineering and Technology, Sun Yat-sen University, Guangzhou 510276, China
Interests: electrochemical sensors and materials; wearable devices
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Electrochemiluminescence (ECL) is persistently considered as a hot research topic and has a wide application scope, e.g., nucleic acid detection, immunoassay and the determination of electrocatalytic activity. Very recent breakthrough work even launched single-molecular scale imaging in cells and tissues (e.g. Nature 2021, 596, 244, cover paper), which further enlarges the application field of ECL. Meanwhile, the basic theoretical research related to ECL has been developing in recent years, such as i) how to more accurately evaluate the light-emitting efficiencies of ECL luminescent probes; ii) the design and application of new ECL luminophores with special photophysical properties, e.g., aggregation-induced emission (AIE) type emitters and thermally activated delayed fluorescence (TADF) type emitters; and iii) the latest ECL signal acquisition strategy, low overpotential ECL method, signal amplification strategy, high-resolution spatial imaging analysis method, etc. In order to further showcase the latest advances in ECL, we have organized this Special Issue, titled “Recent Chemistry Research on Electrochemiluminescence”, with the purpose to highlight the latest advances from all those topics.

Prof. Dr. Baohua Zhang
Prof. Dr. Li Niu
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Molecules is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • electrochemiluminescence
  • electrogenerated chemiluminescence
  • electrochemistry
  • sensing
  • light-emitting
  • biosensing
  • environmental
  • analytical chemistry

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Published Papers (2 papers)

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Research

14 pages, 2562 KiB  
Article
Studies on Annihilation and Coreactant Electrochemiluminescence of Thermally Activated Delayed Fluorescent Molecules in Organic Medium
by Ping Huang, Xingzi Zou, Zhiyun Xu, Yanting Lan, Lijuan Chen, Baohua Zhang and Li Niu
Molecules 2022, 27(21), 7457; https://doi.org/10.3390/molecules27217457 - 2 Nov 2022
Cited by 9 | Viewed by 2045
Abstract
Very recently, there is a great research interest in electrochemiluminescence (ECL) featuring thermally activated delayed fluorescence (TADF) properties, i.e., TADF-ECL. It is appealing since the earlier reports in this topic well-confirmed that this strategy has a great potential in achieving all-exciton-harvesting ECL efficiency [...] Read more.
Very recently, there is a great research interest in electrochemiluminescence (ECL) featuring thermally activated delayed fluorescence (TADF) properties, i.e., TADF-ECL. It is appealing since the earlier reports in this topic well-confirmed that this strategy has a great potential in achieving all-exciton-harvesting ECL efficiency under electrochemical excitation, which is a breakthrough in the topic of organic ECL. However, organic phase electrochemistry and ECL studies surrounding TADF-ECL are still extremely rare. Especially, the ECL spectra of previous reported TADF emitters are still very different from their PL spectra. In this work, we systematically measure and discuss the liquid electrochemistry and ECL behavior of two typical TADF molecules in organic medium. Most importantly, we verify for the first time that the ECL spectra of them (coreactant ECL mode) are identical to their PL spectra counterparts, which confirms the effectiveness of TADF photophysical properties in the coreactant ECL mode in practice. Full article
(This article belongs to the Special Issue Recent Chemistry Research on Electrochemiluminescence)
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12 pages, 2241 KiB  
Article
Highly Efficient Solution-Processed Blue Phosphorescent Organic Light-Emitting Diodes Based on Co-Dopant and Co-Host System
by Jingyu Wang, Jiaxuan Yin, Xiaofang Li, Zhe Wang, Ruixia Wu and Liang Zhou
Molecules 2022, 27(20), 6882; https://doi.org/10.3390/molecules27206882 - 14 Oct 2022
Viewed by 1980
Abstract
The low-lying HOMO level of the blue emitter and the interfacial miscibility of organic materials result in inferior hole injection, and long exciton lifetime leads to triplet-triplet annihilation (TTA) and triplet-polaron annihilation (TPA), so the efficiencies of blue phosphorescent organic light-emitting diodes (PhOLEDs) [...] Read more.
The low-lying HOMO level of the blue emitter and the interfacial miscibility of organic materials result in inferior hole injection, and long exciton lifetime leads to triplet-triplet annihilation (TTA) and triplet-polaron annihilation (TPA), so the efficiencies of blue phosphorescent organic light-emitting diodes (PhOLEDs) are still unsatisfactory. Herein, we design co-host and co-dopant structures to improve the efficiency of blue PhOLEDs by means of solution processing. TcTa acts as hole transport ladder due to its high-lying HOMO level, and bipolar mCPPO1 helps to balance carriers’ distribution and weaken TPA. Besides the efficient FIr6, which acts as the dominant blue dopant, FCNIrPic was introduced as the second dopant, whose higher HOMO level accelerates hole injection and high triplet energy facilitates energy transfer. An interesting phenomenon caused by microcavity effect between anode and cathode was observed. With increasing thickness of ETL, peak position of electroluminescence (EL) spectrum red shifts gradually. Once the thickness of ETL exceeded 140 nm, emission peak blue-shifts went back to its original position. Finally, the maximum current efficiency (CE), power efficiency (PE), and external quantum efficiency (EQE) of blue phosphorescent organic light-emitting diode (PhOLED) went up to 20.47 cd/A, 11.96 lm/W, and 11.62%, respectively. Full article
(This article belongs to the Special Issue Recent Chemistry Research on Electrochemiluminescence)
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