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Article

Phenoxazine-Dibenzothiophene Sulfoximine Emitters Featuring Both Thermally Activated Delayed Fluorescence and Aggregation Induced Emission

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Shenzhen Key Laboratory of Polymer Science and Technology, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518060, China
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Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
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Hubei Key Lab on Organic and Polymeric Optoelectronic Materials, Department of Chemistry, Wuhan University, Wuhan 430072, China
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Authors to whom correspondence should be addressed.
Academic Editor: Pradip K. Bhowmik
Molecules 2021, 26(17), 5243; https://doi.org/10.3390/molecules26175243
Received: 31 July 2021 / Revised: 17 August 2021 / Accepted: 24 August 2021 / Published: 29 August 2021
(This article belongs to the Special Issue Light-Emitting Diodes Based on Organic Materials and Quantum Dots)
In this work, we demonstrate dibenzothiophene sulfoximine derivatives as building blocks for constructing emitters featuring both thermally activated delayed fluorescent (TADF) and aggregation-induced emission (AIE) properties, with multiple advantages including high chemical and thermal stability, facile functionalization, as well as tunable electron-accepting ability. A series of phenoxazine-dibenzothiophene sulfoximine structured TADF emitters were successfully synthesized and their photophysical and electroluminescent properties were evaluated. The electroluminescence devices based on these emitters displayed diverse emissions from yellow to orange and reached external quantum efficiencies (EQEs) of 5.8% with 16.7% efficiency roll-off at a high brightness of 1000 cd·m−2. View Full-Text
Keywords: organic light-emitting diodes; thermally activated delayed fluorescence; color-managing acceptor; aggregation induced emission organic light-emitting diodes; thermally activated delayed fluorescence; color-managing acceptor; aggregation induced emission
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MDPI and ACS Style

Yang, Y.; Xiao, R.; Cao, X.; Chen, Z.; Lv, X.; Zhang, Y.; Gong, S.; Zou, Y.; Yang, C. Phenoxazine-Dibenzothiophene Sulfoximine Emitters Featuring Both Thermally Activated Delayed Fluorescence and Aggregation Induced Emission. Molecules 2021, 26, 5243. https://doi.org/10.3390/molecules26175243

AMA Style

Yang Y, Xiao R, Cao X, Chen Z, Lv X, Zhang Y, Gong S, Zou Y, Yang C. Phenoxazine-Dibenzothiophene Sulfoximine Emitters Featuring Both Thermally Activated Delayed Fluorescence and Aggregation Induced Emission. Molecules. 2021; 26(17):5243. https://doi.org/10.3390/molecules26175243

Chicago/Turabian Style

Yang, Yiyu, Ran Xiao, Xiaosong Cao, Zhanxiang Chen, Xialei Lv, Youming Zhang, Shaolong Gong, Yang Zou, and Chuluo Yang. 2021. "Phenoxazine-Dibenzothiophene Sulfoximine Emitters Featuring Both Thermally Activated Delayed Fluorescence and Aggregation Induced Emission" Molecules 26, no. 17: 5243. https://doi.org/10.3390/molecules26175243

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