手性激子耦合在螺旋芴-卟啉化合物中的作用。
Exciton coupling chirality in helicene-porphyrin conjugates.
机构信息
Univ Rennes, CNRS, ISCR - UMR 6226, F-35000 Rennes, France.
Department of Chemistry, University at Buffalo, State University of New York, Buffalo, USA.
出版信息
Chem Commun (Camb). 2021 Oct 14;57(82):10743-10746. doi: 10.1039/d1cc03314j.
PMID:34585176
Abstract
Enantiopure helicene-porphyrin conjugates were prepared. They show strong changes in their circular dichroic response as compared to classical helicene derivatives, with highly intense bisignate Exciton Coupling (EC) signal and Δ values up to 680 M cm for the Soret band. They also display circularly polarized fluorescence in the (far-)red region, with dissymmetry factors up to 7 × 10.
摘要
对映纯螺旋卟啉化合物进行了制备。与经典的螺旋衍生物相比，它们的圆二色性响应发生了强烈变化，具有高度强烈的双符号激子耦合（EC）信号，并且 Soret 带的 Δ 值高达 680 M cm。它们在（远）红区也显示出圆偏振荧光，不对称因子高达 7×10。
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