Spiroconjugated Tetraaminospirenes as Donors in Color‐Tunable Charge‐Transfer Emitters with Donor‐Acceptor Structure

Autor: Mathias Hermann, Chihaya Adachi, Birgit Esser, Jan S. Wössner, Daniel Rose, David C. Grenz, Florin Adler, Jennifer Wilbuer, Chin-Yiu Chan
Rok vydání: 2021
Předmět:
Zdroj: Chemistry – A European Journal. 28
ISSN: 1521-3765
0947-6539
Popis: Charge-transfer emitters are attractive due to their color tunability and potentially high photoluminescence quantum yields (PLQYs). We herein present tetraaminospirenes as donor moieties, which, in combination with a variety of acceptors, furnished 12 charge-transfer emitters with a range of emission colors and PLQYs of up to 99 %. The spatial separation of their frontier molecular orbitals was obtained through careful structural design, and two DA structures were confirmed by X-ray crystallography. A range of photophysical measurements supported by DFT calculations shed light on the optoelectronic properties of this new family of spiro-NN-donor-acceptor dyes.
Databáze: OpenAIRE
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