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dc.contributorWichita State University. Department of Chemistryen_US
dc.contributor.authorD'Souza, Francisen_US
dc.contributor.authorIto, Osamuen_US
dc.identifier.citationChemical communications (Cambridge, England). 2009 Sep7; (33): 4913-28.en_US
dc.descriptionClick on the DOI link below to access the article (may not be free).en_US
dc.description.abstractSince the three-dimensional electron-accepting fullerene has been found to be an excellent building block for self-assembled supramolecular systems, we have investigated photoinduced electron transfer processes in supramolecular fullerene systems with porphyrins and phthalocyanines as electron donors to mimic natural photosynthesis. We have successfully formed self-assembled supramolecular dyads and triads via metal-ligand coordination, crown-ether inclusion, ion pairing, hydrogen-bonding, or pi-pi stacking interactions. Although the single mode of binding gives usually flexible supramolecular structures, the newly developed strategy of multiple modes of binding results in conjugates of defined distance and orientation between the donor and acceptor entities, which influences the overall electron transfer reactions. In these conjugates, we observe the anticipated acceleration of the charge separation process and deceleration of the charge recombination process. Applications of these supramolecular systems for reversible photoswitching of inter- and intramolecular electron transfer events open up new opportunities in the area of photosensors. Extension of the self-assembly approaches to single wall carbon nanotubes (SWNT) results in SWNT-porphyrin/phthalocyanine nanohybrids capable of undergoing photoinduced electron transfer. These photochemical processes lead to photocatalytic reactions accumulating redox active substances of electron acceptor/mediator entities with the help of a sacrificial electron donor. Studies on these self-assembled supramolecular dyads, triads, tetrads, etc., are only in the beginning stages and future studies anticipate involvement of more complex systems targeted for better performances in light-driven devices.en_US
dc.publisherRoyal Society of Chemistryen_US
dc.relation.ispartofseriesChemical communications (Cambridge, England)en_US
dc.relation.ispartofseriesChem. Commun. (Camb.)en_US
dc.titleSupramolecular donor-acceptor hybrids of porphyrins/phthalocyanines with fullerenes/carbon nanotubes: electron transfer, sensing, switching, and catalytic applicationsen_US
dc.description.versionpeer revieweden_US
dc.rights.holderCopyright ©The Royal Society of Chemistry 2009en_US

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