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通过乌吉四组分反应合成的单分子激基复合物

Unimolecular Exciplexes by Ugi Four-Component Reaction.

作者信息

Ochs Maria, Mayer Bernhard, Müller Thomas J J

机构信息

Institut für Organische Chemie and Makromolekulare Chemie, Heinrich-Heine-Universität Düsseldorf, Düsseldorf, Germany.

Ernst-Berl Institut für Technische and Makromolekulare Chemie, Technische Universität Darmstadt, Darmstadt, Germany.

出版信息

Front Chem. 2019 Nov 1;7:717. doi: 10.3389/fchem.2019.00717. eCollection 2019.

DOI:10.3389/fchem.2019.00717
PMID:31737597
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6838752/
Abstract

Exciplex or excited complex emission is an excited state process, arising from considerable charge transfer of an excited energy donor to an acceptor, which can be identified by the occurrence of a redshifted emission band that is absent in the individual constituents. Particularly interesting are exciplexes that are formed by intramolecular excited state interaction, which are inherently concentration independent. Based upon our previous experience in the Ugi-4CR syntheses of donor-acceptor conjugates capable of photo-induced intramolecular electron transfer (PIET), that is, generation of light-induced charge separation, we now disclose the diversity-oriented approach on unimolecular exciplex emitters and their reference systems by Ugi-4CR. The photophysics is studied by absorption and emission spectroscopy and accompanied by density functional theory (DFT) and time-dependent density functional theory (TDDFT) calculations.

摘要

激基复合物或激发态复合物发射是一种激发态过程，源于激发态能量供体向受体的大量电荷转移，可通过在各个组分中不存在的红移发射带的出现来识别。特别有趣的是通过分子内激发态相互作用形成的激基复合物，其本质上与浓度无关。基于我们之前在Ugi-4CR合成能够进行光诱导分子内电子转移（PIET）（即光诱导电荷分离）的供体-受体共轭物方面的经验，我们现在通过Ugi-4CR公开了关于单分子激基复合物发射体及其参考体系的多样性导向方法。通过吸收和发射光谱研究光物理，并辅以密度泛函理论（DFT）和含时密度泛函理论（TDDFT）计算。

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