Grenz David C, Rose Daniel, Wössner Jan S, Wilbuer Jennifer, Adler Florin, Hermann Mathias, Chan Chin-Yiu, Adachi Chihaya, Esser Birgit
Institute for Organic Chemistry, University of Freiburg, Albertstraße 21, 79104, Freiburg, Germany.
Center for Organic Photonics and Electronics Research OPERA, Kyushu University, 744 Motooka, Nishi, 819-0395, Fukuoka, Japan.
Chemistry. 2022 Jan 27;28(6):e202104150. doi: 10.1002/chem.202104150. Epub 2021 Dec 16.
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.
电荷转移发光体因其颜色可调性和潜在的高光致发光量子产率（PLQYs）而备受关注。我们在此展示了以四氨基螺烯作为供体部分，其与多种受体相结合，得到了12种电荷转移发光体，它们具有一系列发射颜色，PLQYs高达99%。通过精心的结构设计实现了其前沿分子轨道的空间分离，并通过X射线晶体学证实了两种给体-受体（DA）结构。由密度泛函理论（DFT）计算支持的一系列光物理测量揭示了这一新的螺环-NN-供体-受体染料家族的光电性质。
