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A Large Dendritic Multiporphyrin Array as a Mimic of the Bacterial Light‐Harvesting Antenna Complex: Molecular Design of an Efficient Energy Funnel for Visible Photons
Author(s) -
Choi MyungSeok,
Aida Takuzo,
Yamazaki Tomoko,
Yamazaki Iwao
Publication year - 2001
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/1521-3773(20010903)40:17<3194::aid-anie3194>3.0.co;2-5
Subject(s) - chromophore , porphyrin , funnel , energy transfer , antenna (radio) , range (aeronautics) , photon , computer science , optoelectronics , physics , nanotechnology , chemistry , photochemistry , materials science , optics , telecommunications , chemical physics , composite material , organic chemistry
π‐Electronic conjugation is not necessary to facilitate long‐range energy migration and transfer: A rapid ( k ENT =1.04×10 9 s −1 ) and efficient ( Φ EXT =71 %) energy transfer from the 28 photoexcited zinc porphyrin units to the focal free‐base porphyrin unit occurs in a large, star‐shaped dendritic multiporphyrin array in which the chromophore units are linked through flexible ether groups (see picture).