Efficient white polymer light-emitting diodes (WPLEDs) based on covalent-grafting of [Zn2(MP)3(OAc)] into PVK

Guorui Fu; Yani He; Wentao Li; Tiezheng Miao; Xingqiang Lü; Hongshan He; Li Liu; Wai-Yeung Wong

doi:10.1039/C9SC05288G

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Efficient white polymer light-emitting diodes (WPLEDs) based on covalent-grafting of [Zn₂(MP)₃(OAc)] into PVK†

Guorui Fu,‡^a Yani He,‡^a Wentao Li,^a Tiezheng Miao,^a Xingqiang Lü,

*^a Hongshan He,

^b Li Liu

*^c and Wai-Yeung Wong

*^d

Author affiliations

* Corresponding authors

^a School of Chemical Engineering, Northwest University, Xi’an 710069, Shaanxi, China
E-mail: lvxq@nwu.edu.cn

^b Department of Chemistry, Eastern Illinois University, Charleston, IL 61920, USA

^c Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, School of Chemistry and Chemical Engineering, Hubei University, Wuhan 430062, China
E-mail: liulihubei@hubu.edu.cn

^d Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, China
E-mail: wai-yeung.wong@polyu.edu.hk

Abstract

Thanks to the straightforward white light of single grafting-type polymers based on earth-abundant Zn(II)-complexes, producing cost-effective flexible WOLEDs/WPLEDs with good device performance remains a formidable challenge. Herein, by using the polymer Poly(NVK-co-[Zn₂(MP)₃(OAc)]) with excellent physical properties for single-layer WPLEDs, record-high efficiencies (η^Max_c = 13.0 cd A⁻¹, η^Max_p = 6.1 lm W⁻¹ and η^Max_EQE = 9.2%) and low (ca. 25%) efficiency roll-off compared to previous organo-Zn²⁺-based WOLEDs/WPLEDs are realized. This finding renders single Zn(II)-complex-grafted polymers a new route to low-cost and large-area flexible WPLEDs for potential full-colour flat displays.

This article is part of the themed collection: 2020 Chemical Science HOT Article Collection

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Article information

DOI: https://doi.org/10.1039/C9SC05288G
Article type: Edge Article
Submitted: 19 Oct 2019
Accepted: 29 Jan 2020
First published: 30 Jan 2020
This article is Open Access

All publication charges for this article have been paid for by the Royal Society of Chemistry

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Chem. Sci., 2020,11, 2640-2646

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Efficient white polymer light-emitting diodes (WPLEDs) based on covalent-grafting of [Zn₂(MP)₃(OAc)] into PVK

G. Fu, Y. He, W. Li, T. Miao, X. Lü, H. He, L. Liu and W. Wong, Chem. Sci., 2020, 11, 2640 DOI: 10.1039/C9SC05288G

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