中文版 | English
Title

Highly Efficient Au(I) Alkynyl Emitters: Thermally Activated Delayed Fluorescence and Solution-Processed OLEDs

Author
Corresponding AuthorLi, Kai; Cui, Ganglong; Chen, Yong
Publication Years
2022-10-01
DOI
Source Title
ISSN
0947-6539
EISSN
1521-3765
Abstract
Two-coordinate donor-metal-acceptor type coinage metal complexes displaying efficient thermally activated delayed fluorescence (TADF) have been unveiled to be highly appealing candidates as emitters for organic light-emitting diodes (OLEDs). Herein a series of green to yellow TADF gold(I) complexes with alkynyl ligands has been developed for the first time. The complexes exhibit high photoluminescence quantum yields (PLQYs) of up to 0.76 in doped films (5 wt % in PMMA) at room temperature. The modifications of alkynyl ligands with electron-donating amino groups together with the use of electron-deficient carbene ligands induce ligand-to-ligand charge transfer excited states that give rise to TADF emission. Spectroscopic and density functional theory (DFT) calculations reveal the roles of electron-donating capability of the alkynyl ligand in tuning the excited-state properties. Solution-processed organic light-emitting diodes (OLEDs) using the present complexes as emitters achieve maximum external quantum efficiency (EQE) of up to 20 %.
Keywords
URL[Source Record]
Indexed By
Language
English
SUSTech Authorship
Others
Funding Project
Natural Science Foundation of China["22170513","21971250","21801170"] ; Beijing Municipal Science & Technology Commission[Z211100007921020] ; Department of Science and Technology of Guangdong Province[2019QN01C617]
WOS Research Area
Chemistry
WOS Subject
Chemistry, Multidisciplinary
WOS Accession No
WOS:000863953600001
Publisher
ESI Research Field
CHEMISTRY
Data Source
Web of Science
Citation statistics
Cited Times [WOS]:3
Document TypeJournal Article
Identifierhttp://kc.sustech.edu.cn/handle/2SGJ60CL/405966
DepartmentDepartment of Chemistry
Affiliation
1.Chinese Acad Sci, Key Lab Photochem Convers & Optoelect Mat, Beijing 100190, Peoples R China
2.Chinese Acad Sci, CAS HKU Joint Lab New Mat, Tech Inst Phys & Chem, Beijing 100190, Peoples R China
3.Beijing Normal Univ, Key Lab Theoret & Computat Photochem, Minist Educ, Chem Coll, Beijing 100875, Peoples R China
4.Southern Univ Sci & Technol, Dept Chem, Shenzhen 518055, Peoples R China
5.Shenzhen Univ, Coll Mat Sci & Engn, Shenzhen 518055, Peoples R China
6.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Yu, Fei-Hu,Song, Xiu-Fang,Liu, Guan-Hao,et al. Highly Efficient Au(I) Alkynyl Emitters: Thermally Activated Delayed Fluorescence and Solution-Processed OLEDs[J]. CHEMISTRY-A EUROPEAN JOURNAL,2022.
APA
Yu, Fei-Hu.,Song, Xiu-Fang.,Liu, Guan-Hao.,Chang, Xiaoyong.,Li, Kai.,...&Chen, Yong.(2022).Highly Efficient Au(I) Alkynyl Emitters: Thermally Activated Delayed Fluorescence and Solution-Processed OLEDs.CHEMISTRY-A EUROPEAN JOURNAL.
MLA
Yu, Fei-Hu,et al."Highly Efficient Au(I) Alkynyl Emitters: Thermally Activated Delayed Fluorescence and Solution-Processed OLEDs".CHEMISTRY-A EUROPEAN JOURNAL (2022).
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