Sapphyrin-nanotube assemblies.
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.
Boul
Peter J
PJ
Department of Chemistry and Biochemistry, The University of Texas at Austin, 1 University Station A5300, Austin, Texas 78712, USA.
Cho
Dong-Gyu
DG
Rahman
G M Aminur
GM
Marquez
Manuel
M
Ou
Zhongping
Z
Kadish
Karl M
KM
Guldi
Dirk M
DM
Sessler
Jonathan L
JL
D004583:Electrons; D005609:Free Radicals; D018625:Microscopy, Atomic Force; D043942:Nanotubes; D010084:Oxidation-Reduction; D011166:Porphyrins / Q000737:chemistry*; D013050:Spectrometry, Fluorescence; D013055:Spectrophotometry, Infrared; D013056:Spectrophotometry, Ultraviolet; D013535:Suspensions
D005609:Free Radicals; D011166:Porphyrins; D013535:Suspensions; C440448:sapphyrin