Porphyrin–Polyyne [3]- and [5]Rotaxanes

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• 作者：Daniel R. Kohn ; Levon D. Movsisyan ; Amber L. Thompson ; Harry L. Anderson
• 刊名：Organic Letters
• 出版年：2017
• 出版时间：January 20, 2017
• 年：2017
• 卷：19
• 期：2
• 页码：348-351
• 全文大小：498K
• ISSN：1523-7052

文摘

Porphyrin–polyyne [3]- and [5]rotaxanes have been synthesized by condensing aldehyde–rotaxanes with pyrrole or dipyrromethane. The crystal structure of a [3]rotaxane shows that the macrocycles adopt compact conformations, holding the hexaynes near the porphyrin core, and that the phenanthroline units form intermolecular π-stacked dimers in the solid. Fluorescence spectra reveal singlet excited-state energy transfer from the threaded hexayne to the porphyrin, from the phenanthroline to the porphyrin, and from the phenanthroline to the hexayne.