2023
DOI: 10.1021/acsami.3c00047
|View full text |Cite
|
Sign up to set email alerts
|

Impact of π-Expanded Boron-Carbonyl Hybrid Acceptors on TADF Properties: Controlling Local Triplet Excited States and Unusual Emission Tuning

Abstract: Three donor−acceptor-type thermally activated delayed fluorescence (TADF) emitters (PXZBAO (1), PXZBTO (2), and PXZBPO (3)) comprising a phenoxazine (PXZ) donor and differently π-expanded boroncarbonyl (BCO) hybrid acceptor units are proposed. The emitters exhibit red (1) to orange (3) emissions with an increase in the π-expansion in the BCO acceptors. The control of the strength of local aromaticity for the BCO unit and the corresponding LUMO level is attributed to inducing the unusual emission color shifts. … Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
2

Citation Types

0
2
0

Year Published

2023
2023
2024
2024

Publication Types

Select...
2
1

Relationship

0
3

Authors

Journals

citations
Cited by 3 publications
(2 citation statements)
references
References 65 publications
0
2
0
Order By: Relevance
“…17 Additionally, when utilizing phenoxazine as the donor and π-expanded boroncarbonyl as the acceptor, D–A type TADF emitters showcase a high K RISC of 10 6 s −1 . 18 The reduction of efficiency roll-off can be achieved by enhancing K RISC . 19–23 TADF molecules with through-bond charge transfer (TBCT) properties have been synthesized by constructing π-conjugated donor–acceptor (D–π–A) molecular structures.…”
Section: Introductionmentioning
confidence: 99%
See 1 more Smart Citation
“…17 Additionally, when utilizing phenoxazine as the donor and π-expanded boroncarbonyl as the acceptor, D–A type TADF emitters showcase a high K RISC of 10 6 s −1 . 18 The reduction of efficiency roll-off can be achieved by enhancing K RISC . 19–23 TADF molecules with through-bond charge transfer (TBCT) properties have been synthesized by constructing π-conjugated donor–acceptor (D–π–A) molecular structures.…”
Section: Introductionmentioning
confidence: 99%
“…28 However, the twisted molecular configuration reduces the overlap integral, resulting in a smaller fluorescence oscillator strength and lower fluorescence efficiency. 18,29,30…”
Section: Introductionmentioning
confidence: 99%