A fluorene-bridged double carbonyl/amine multiresonant thermally activated delayed fluorescence emitter for efficient green OLEDs

Sen Wu; Ya-Nan Hu; Dianming Sun; Kai Wang; Xiao-Hong Zhang; Eli Zysman-Colman

doi:10.1039/D3CC05761E

A fluorene-bridged double carbonyl/amine multiresonant thermally activated delayed fluorescence emitter for efficient green OLEDs†‡

Sen Wu,§^a Ya-Nan Hu,§^b Dianming Sun,*^a Kai Wang,

^b Xiao-Hong Zhang

*^bc and Eli Zysman-Colman

*^a

Author affiliations

* Corresponding authors

^a Organic Semiconductor Centre, EaStCHEM School of Chemistry, University of St Andrews, St Andrews, Fife KY16 9ST, UK
E-mail: eli.zysman-colman@st-andrews.ac.uk, sd235@st-andrews.ac.uk
Fax: +44-1334 463808
Tel: +44-1334 463826

^b Institute of Functional Nano & Soft Materials (FUNSOM), Joint International Research Laboratory of Carbon-Based Functional Materials and Devices, Soochow University, Suzhou, Jiangsu 215123, P. R. China
E-mail: xiaohong_zhang@suda.edu.cn

^c Jiangsu Key Laboratory of Advanced Negative Carbon Technologies, Soochow University, Suzhou, Jiangsu, P. R. China

Abstract

Herein, we report a fluorene-bridged double carbonyl/amine-based MR TADF emitter DDiKTa-F, formed by locking the conformation of the previously reported compound DDiKTa. Using this strategy, DDiKTa-F exhibited narrower, brighter, and red-shifted emission. The OLEDs with DDiKTa-F emitted at 493 nm and showed an EQE_max of 15.3% with an efficiency roll-off of 35% at 100 cd m⁻².

This article is part of the themed collection: ChemComm 60th Anniversary Board Member Collection

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DOI: https://doi.org/10.1039/D3CC05761E
Article type: Communication
Submitted: 25 Nov 2023
Accepted: 21 Dec 2023
First published: 22 Dec 2023
This article is Open Access

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Chem. Commun., 2024,60, 2489-2492

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A fluorene-bridged double carbonyl/amine multiresonant thermally activated delayed fluorescence emitter for efficient green OLEDs

S. Wu, Y. Hu, D. Sun, K. Wang, X. Zhang and E. Zysman-Colman, Chem. Commun., 2024, 60, 2489 DOI: 10.1039/D3CC05761E

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given.

Chemical Communications

A fluorene-bridged double carbonyl/amine multiresonant thermally activated delayed fluorescence emitter for efficient green OLEDs†‡

Abstract

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A fluorene-bridged double carbonyl/amine multiresonant thermally activated delayed fluorescence emitter for efficient green OLEDs

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