Sapphyrin−Nanotube Assemblies
- 10 April 2007
- journal article
- research article
- Published by American Chemical Society (ACS) in Journal of the American Chemical Society
- Vol. 129 (17) , 5683-5687
- https://doi.org/10.1021/ja069266h
Abstract
Single wall carbon nanotubes (SWNTs) bind strongly to sapphyrins, quintessential pentapyrrolic “expanded porphyrin” macrocycles, through donor−acceptor stacking interactions. The specific use of a functionalized sapphyrin diol yields stable water-suspendable nanotubes and also permits the formation of well-defined assemblies in ionic liquids. The absorption and steady-state fluorescence spectra of the resulting noncovalently functionalized nanotube complexes have been analyzed in aqueous media and ionic liquids, yielding a description of the photophysical properties of the nanotube−sapphyrin complexes as donor−acceptor species for light-harvesting.Keywords
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