A New Entry to Purely Organic Thermally Activated Delayed Fluorescence Emitters Based on Pyrido[2,3‐ b ]pyrazine‐Dihydrophenazasilines Donor‐Acceptor Dyad

Autor: Tsuyoshi Goya, Paola Zimmermann Crocomo, Takumi Hosono, Satoshi Minakata, Leonardo Evaristo Sousa, Piotr Silva, Przemyslaw Data, Youhei Takeda
Rok vydání: 2022
Předmět:
Zdroj: Asian Journal of Organic Chemistry
Goya, T, Crocomo, P Z, Hosono, T, Minakata, S, de Sousa, L E, de Silva, P, Data, P & Takeda, Y 2022, ' A New Entry to Purely Organic Thermally Activated Delayed Fluorescence Emitters Based on Pyrido[2,3- b ]pyrazine–Dihydrophenazasilines Donor–Acceptor Dyad ', Asian Journal of Organic Chemistry, vol. 11, no. 3, e202100780 . https://doi.org/10.1002/ajoc.202100780
ISSN: 2193-5815
2193-5807
DOI: 10.1002/ajoc.202100780
Popis: 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.
Databáze: OpenAIRE
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