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Sulfone-Embedded Heterocyclic Narrowband Emitters with Strengthened Molecular Rigidity and Suppressed High-Frequency Vibronic Coupling

Jiang, Simin ; Yu, Yue ; Li, Deli ; Chen, Zijian ; He, Yanmei LU ; Li, Mengke ; Yang, Guo-Xi ; Qiu, Weidong ; Yang, Zhihai and Gan, Yiyang , et al. (2023) In Angewandte Chemie (International edition) 62(16). p.202218892-202218892
Abstract

Sulfone-embedded heterocyclics are of great interest in organic light-emitting diodes (OLEDs), however, exploring highly efficient narrowband emitters based on sulfone-embedded heterocyclics remains challenging. Herein, five emitters with different sulfur valence state and molecular rigidity, namely tP, tCPD, 2tCPD, tPD and tPT, are thoroughly analysed. With restricted twisting of flexible peripheral phenyl by strengthening molecular rigidity, molecular emission spectra can be enormously narrowed. Further, introducing the sulfone group with bending vibration in low-frequency region that suppresses high-frequency vibration, sharp narrow full-widths at half-maximum of 28 and 25 nm are achieved for 2tCPD and tPD, respectively. Maximum... (More)

Sulfone-embedded heterocyclics are of great interest in organic light-emitting diodes (OLEDs), however, exploring highly efficient narrowband emitters based on sulfone-embedded heterocyclics remains challenging. Herein, five emitters with different sulfur valence state and molecular rigidity, namely tP, tCPD, 2tCPD, tPD and tPT, are thoroughly analysed. With restricted twisting of flexible peripheral phenyl by strengthening molecular rigidity, molecular emission spectra can be enormously narrowed. Further, introducing the sulfone group with bending vibration in low-frequency region that suppresses high-frequency vibration, sharp narrow full-widths at half-maximum of 28 and 25 nm are achieved for 2tCPD and tPD, respectively. Maximum external quantum efficiencies of 22.0 % and 27.1 % are successfully realized for 2tCPD- and tPD-based OLED devices. These results offer a novel design strategy for constructing narrowband emitters by introducing sulfone group into a rigid molecular framework.

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publishing date
type
Contribution to journal
publication status
published
in
Angewandte Chemie (International edition)
volume
62
issue
16
pages
202218892 - 202218892
publisher
John Wiley & Sons Inc.
external identifiers
  • pmid:36815469
  • scopus:85149486028
ISSN
1521-3773
DOI
10.1002/anie.202218892
language
English
LU publication?
no
additional info
© 2023 Wiley-VCH GmbH.
id
3d1e6c8e-7db4-4a70-ad46-f286a9b978dc
date added to LUP
2024-05-03 11:59:59
date last changed
2024-06-15 11:20:54
@article{3d1e6c8e-7db4-4a70-ad46-f286a9b978dc,
  abstract     = {{<p>Sulfone-embedded heterocyclics are of great interest in organic light-emitting diodes (OLEDs), however, exploring highly efficient narrowband emitters based on sulfone-embedded heterocyclics remains challenging. Herein, five emitters with different sulfur valence state and molecular rigidity, namely tP, tCPD, 2tCPD, tPD and tPT, are thoroughly analysed. With restricted twisting of flexible peripheral phenyl by strengthening molecular rigidity, molecular emission spectra can be enormously narrowed. Further, introducing the sulfone group with bending vibration in low-frequency region that suppresses high-frequency vibration, sharp narrow full-widths at half-maximum of 28 and 25 nm are achieved for 2tCPD and tPD, respectively. Maximum external quantum efficiencies of 22.0 % and 27.1 % are successfully realized for 2tCPD- and tPD-based OLED devices. These results offer a novel design strategy for constructing narrowband emitters by introducing sulfone group into a rigid molecular framework.</p>}},
  author       = {{Jiang, Simin and Yu, Yue and Li, Deli and Chen, Zijian and He, Yanmei and Li, Mengke and Yang, Guo-Xi and Qiu, Weidong and Yang, Zhihai and Gan, Yiyang and Lin, Jianying and Ma, Yuguang and Su, Shi-Jian}},
  issn         = {{1521-3773}},
  language     = {{eng}},
  month        = {{04}},
  number       = {{16}},
  pages        = {{202218892--202218892}},
  publisher    = {{John Wiley & Sons Inc.}},
  series       = {{Angewandte Chemie (International edition)}},
  title        = {{Sulfone-Embedded Heterocyclic Narrowband Emitters with Strengthened Molecular Rigidity and Suppressed High-Frequency Vibronic Coupling}},
  url          = {{http://dx.doi.org/10.1002/anie.202218892}},
  doi          = {{10.1002/anie.202218892}},
  volume       = {{62}},
  year         = {{2023}},
}