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Dendronized Fullerene–Porphyrin Conjugates in ortho , meta , and para Positions: A Charge‐Transfer Assay
Author(s) -
Krokos Evangelos,
Schubert Christina,
Spänig Fabian,
Ruppert Michaela,
Hirsch Andreas,
Guldi Dirk M.
Publication year - 2012
Publication title -
chemistry – an asian journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.18
H-Index - 106
eISSN - 1861-471X
pISSN - 1861-4728
DOI - 10.1002/asia.201200068
Subject(s) - fullerene , porphyrin , dendrimer , chemistry , excited state , charge (physics) , photochemistry , chemical physics , acceptor , computational chemistry , organic chemistry , atomic physics , physics , quantum mechanics , condensed matter physics
The physicochemical characterization, that is, ground and excited state, of a new series of dendronized porphyrin/fullerene electron donor–acceptor conjugates in nonaqueous and aqueous environments is reported. In contrast to previous work, we detail the charge‐separation and charge‐recombination dynamics in zinc and copper metalloporphyrins as a function of first‐ and second‐generation dendrons as well as a function of ortho , meta , and para substitution . Both have an appreciable impact on the microenvironments of the redox‐active constituents, namely the porphyrins and the fullerenes. As a matter of fact, the resulting charge‐transfer dynamics were considerably impacted by the interplay between the associated forces that reach from dendron‐induced shielding to dipole–charge interactions.