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Light‐Harvesting Dendrimers: Efficient Intra‐ and Intermolecular Energy‐Transfer Processes in a Species Containing 65 Chromophoric Groups of Four Different Types
Author(s) -
Hahn Uwe,
Gorka Marius,
Vögtle Fritz,
Vicinelli Veronica,
Ceroni Paola,
Maestri Mauro,
Balzani Vincenzo
Publication year - 2002
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(20021004)41:19<3595::aid-anie3595>3.0.co;2-b
Subject(s) - dendrimer , chromophore , intermolecular force , intramolecular force , chemistry , photochemistry , eosin , molecule , energy transfer , acceptor , chemical physics , stereochemistry , organic chemistry , medicine , staining , physics , pathology , condensed matter physics
An eosin molecule encapsulated into the dendrimer shown in the picture collects electronic energy from all 64 chromophoric units of the dendrimer, which comprises three different types of chromophore. Efficient intramolecular (within the dendrimer) and intermolecular (dendrimer‐host→eosin‐guest) energy‐transfer processes by a Förster type mechanism, as suggested by the strong overlap between the emission and absorption spectra of the relevant donor and acceptor units.