Light‐Harvesting Nanotubes Formed by Supramolecular Assembly of Aromatic Oligophosphates. Issue 34 (4th July 2016)

• Record Type: Journal Article
• Authors: Bösch, Caroline D.; Langenegger, Simon M.; Häner, Robert
• Is Part Of: Angewandte Chemie international edition. Volume 55:Issue 34(2016)
• Page Start: 9961
• Page End: 9964
• Publication Date: 2016-07-04
• Subjects: energy transfer -- H-aggregates -- light-harvesting antenna -- nanotubes -- supramolecular polymers; Chemistry -- Periodicals; 540
• DOI: 10.1002/anie.201604508
• Languages: English
• ISSNs: 1433-7851

Abstract

Abstract: A 2, 7‐disubstituted phosphodiester‐linked phenanthrene trimer forms tubular structures in aqueous media. Chromophores are arranged in H‐aggregates. Incorporation of small quantities of pyrene results in the development of light‐harvesting nanotubes in which phenanthrenes act as antenna chromophores and pyrenes as energy acceptors. Energy collection is most efficient after excitation at the phenanthrene H‐band. Fluorescence quantum yields up to 23 % are reached in pyrene doped, supramolecular nanotubes. Abstract : Exciting pyrenes : Phosphodiester‐linked, 2, 7‐disubstituted phenanthrene trimers form supramolecular nanotubes in aqueous medium. Phenanthrenes are arranged in H‐aggregates. Incorporation of small amounts of pyrene acceptor molecules leads to highly efficient light‐harvesting nanotubes.