Constructing highly efficient multiple-resonance fluorescence materials through inserting benzothiophene within B/N skeletons DOI

He Zhao,

Wenkun Han,

Jianan Xu

et al.

New Journal of Chemistry, Journal Year: 2024, Volume and Issue: 48(36), P. 16119 - 16126

Published: Jan. 1, 2024

Two new multi-resonance (MR) blue emitters with benzothiophene within B/N skeletons exhibit emissions narrow FWHMs, achieving high PLQYs and long device lifetimes.

Language: Английский

Facilitating Intrinsic Delayed Fluorescence of Conjugated Emitters by Inter-Chromophore Interaction DOI Creative Commons
Yixuan Gao,

Yingman Sun,

Zilong Guo

et al.

Chemical Science, Journal Year: 2024, Volume and Issue: unknown

Published: Jan. 1, 2024

Delayed fluorescence (DF) is a unique emitting phenomenon of great interest for important applications in organic optoelectronics. In general, DF requires well-separated frontier orbitals, inherently corresponding to charge transfer (CT)-type emitters. However, facilitating intrinsic local excited (LE)-type conjugated emitters remains very challenging. Aiming overcome this obstacle, we demonstrate new molecular design strategy with DF-inactive B,N-multiple resonance (MR) emitter as model system. Without the necessity doping heavy atoms, synthesized co-facial dimer which an excimer-like state (S

Language: Английский

Citations

2
MR-TADF liquid crystals: towards self assembling host–guest mixtures showing narrowband emission from the mesophase DOI Creative Commons
Julius A. Knöller,

Franziska Müller,

Tomas Matulaitis

et al.

Chemical Science, Journal Year: 2024, Volume and Issue: 15(43), P. 18022 - 18030

Published: Jan. 1, 2024

We developed a MR-TADF based, columnar liquid crystalline host system and doped it with guest. Efficient FRET allowed us to construct the first crystal narrowband from strongly aggregated mesophase.

Language: Английский

Citations

2
Aggregation induced emission and mechanofluorochromic properties of tetraphenylethylene-based luminogen: Fluorescence enhancement induced by phase transition DOI

Xiaoyang Zhao,

Wenjian Huang, Xiaohua Liu

et al.

Dyes and Pigments, Journal Year: 2024, Volume and Issue: 226, P. 112132 - 112132

Published: April 7, 2024

Language: Английский

Citations

1
Modulating Charge‐Transfer Excited States of Multiple Resonance Emitters via Intramolecular Covalent Bond Locking DOI

Tingting Huang,

Yincai Xu, Xueying Lu

et al.

Angewandte Chemie, Journal Year: 2024, Volume and Issue: 136(43)

Published: July 19, 2024

Abstract Advanced multiple resonance thermally activated delayed fluorescence (MR‐TADF) emitters with high efficiency and color purity have emerged as a research focus in the development of ultra‐high‐definition displays. Herein, we disclose an approach to modulate charge‐transfer excited states MR via intramolecular covalent bond locking. This strategy can promote evolution strong (ICT) into weak ICT states, ultimately narrowing full‐width at half‐maximum (FWHM) emitters. To intensity, two octagonal rings are introduced yield molecule m ‐DCzDAz‐BNCz. Compounds ‐CzDAz‐BNCz ‐DCzDAz‐BNCz exhibit bright light‐green green toluene, emission maxima 504 513 nm, FWHMs 28 34 respectively. Sensitized organic light‐emitting diodes (OLEDs) employing peaks 508 520 Commission Internationale de L'Eclairage (CIE) coordinates (0.12, 0.65) (0.19, 0.69), maximum external quantum efficiencies (EQEs) 30.2 % 32.6 %,

Language: Английский

Citations

1
Constructing highly efficient multiple-resonance fluorescence materials through inserting benzothiophene within B/N skeletons DOI

He Zhao,

Wenkun Han,

Jianan Xu

et al.

New Journal of Chemistry, Journal Year: 2024, Volume and Issue: 48(36), P. 16119 - 16126

Published: Jan. 1, 2024

Two new multi-resonance (MR) blue emitters with benzothiophene within B/N skeletons exhibit emissions narrow FWHMs, achieving high PLQYs and long device lifetimes.

Language: Английский

Citations

1