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:	Range (particle radiation) Photoluminescence Chemistry Organic Chemistry Molecular orbital Charge (physics) General Chemistry Donor acceptor Photochemistry Fluorescence Quantum Catalysis
Zdroj:	Chemistry – A European Journal. 28
ISSN:	1521-3765 0947-6539
DOI:	10.1002/chem.202104150
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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