A New Entry to Purely Organic Thermally Activated Delayed Fluorescence Emitters Based on Pyridopyrazine‐Dihydrophenazasilines Donor‐Acceptor Dyad

A new family of thermally activated delayed fluorescence (TADF) emitters based on a twisted donor‐acceptor (D−A) dyad scaffold comprising of dihydrophenazasiline (D) and pyrido[2,3‐b]pyrazine (A) has been developed, and their properties have been investigated. Time‐resolved spectroscopic analysis in...

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Bibliographic Details
Published in:Asian journal of organic chemistry 2022-03, Vol.11 (3)
Main Authors: Goya, Tsuyoshi, Paola Zimmermann Crocomo, Hosono, Takumi, Minakata, Satoshi, de Sousa, Leonardo Evaristo, de Silva, Piotr, Data, Przemyslaw, Takeda, Youhei
Format: Article
Language:English
Subjects:
Emitters
Fluorescence
Organic chemistry
Organic light emitting diodes
Quantum efficiency
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Summary:A new family of thermally activated delayed fluorescence (TADF) emitters based on a twisted donor‐acceptor (D−A) dyad scaffold comprising of dihydrophenazasiline (D) and pyrido[2,3‐b]pyrazine (A) has been developed, and their properties have been investigated. Time‐resolved spectroscopic analysis in matrices revealed the detailed photophysical properties of the D−A compounds. These D−A compounds serve as the emitter for organic light‐emitting diodes (OLEDs), showing a moderate external quantum efficiency (EQE) up to 9% in CBP matrix. Furthermore, theoretical calculations uncovered the excited states nature of the developed TADF emitters.
ISSN:2193-5807
2193-5815
DOI:10.1002/ajoc.202100780