| Abstract
| - We succeeded in integrating single-wall carbon nanotubes (SWNTs), several water-soluble pyrenederivatives (pyrene-), which bear negatively charged ionic headgroups, and a series of water-solublemetalloporphyrins (MP8+) into functional nanohybrids through a combination of associative van der Waalsand electrostatic interactions. The resulting SWNT/pyrene- and SWNT/pyrene-/MP8+ were characterizedby spectroscopic and microscopic means and were found to form stable nanohybrid structures in aqueousmedia. A crucial feature of our SWNT/pyrene- and SWNT/pyrene-/MP8+ is that an efficient exfoliation ofthe initial bundles brings about isolated nanohybrid structures. When the nanohybrid systems arephotoexcited with visible light, a rapid intrahybrid charge separation causes the reduction of the electron-accepting SWNT and, simultaneously, the oxidation of the electron-donating MP8+. Transient absorptionmeasurements confirm that the radical ion pairs are long-lived, with lifetimes in the microsecond range.Particularly beneficial are charge recombination dynamics that are located deep in the Marcus-invertedregion. We include, for the first time, work devoted to exploring and testing FeP8+ and CoP8+ in donor−acceptor nanohybrids.
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