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Photodriven Charge Separation and Transport in Self‐Assembled Zinc Tetrabenzotetraphenylporphyrin and Perylenediimide Charge Conduits
Author(s) -
Roznyatovskiy Vladimir V.,
Carmieli Raanan,
Dyar Scott M.,
Brown Kristen E.,
Wasielewski Michael R.
Publication year - 2014
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201309335
Subject(s) - photoexcitation , covalent bond , charge (physics) , monomer , chemical physics , self assembly , zinc , chemistry , porphyrin , materials science , crystallography , photochemistry , polymer , atomic physics , organic chemistry , physics , quantum mechanics , excited state
Zinc tetrabenzotetraphenyl porphyrin (ZnTBTPP) covalently attached to four perylenediimide (PDI) acceptors self‐assembles into a π‐stacked, segregated columnar structure, as indicated by small‐ and wide‐angle X‐ray scattering. Photoexcitation of ZnTBTPP rapidly produces a long‐lived electron–hole pair having a 26 Å average separation distance, which is much longer than if the pair is confined within the covalent monomer. This implies that the charges are mobile within their respective segregated ZnTBTPP and PDI charge conduits.