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Light‐Harvesting Supramolecular Polymers: Energy Transfer to Various Polyaromatic Acceptors
Author(s) -
Jevric Jovana,
Langenegger Simon M.,
Häner Robert
Publication year - 2020
Publication title -
european journal of organic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.825
H-Index - 155
eISSN - 1099-0690
pISSN - 1434-193X
DOI - 10.1002/ejoc.202000441
Subject(s) - chromophore , chemistry , phenanthrene , förster resonance energy transfer , acceptor , photochemistry , supramolecular chemistry , pyrene , antenna effect , fluorescence , molecule , luminescence , organic chemistry , materials science , optoelectronics , physics , quantum mechanics , condensed matter physics
A supramolecular light‐harvesting antenna consisting of 3,6‐disubstituted phosphodiester‐linked phenanthrene trimers (donors) was doped with different charged and uncharged polyaromatic and heteroaromatic acceptor chromophores. Excitation of the phenanthrene moieties is followed by energy transfer to the acceptor molecules and radiative relaxation. The self‐assembled fiber structure of the phenanthrene trimers is not altered by the dopant, as verified by atomic force microscopy (AFM). Among several neutral and cationic acceptor chromophores, benzo(a)pyrene emerged as one of the highest fluorescence quantum yields, reaching 31 % at a chromophore/phenanthrene ratio of 12 mol‐%. The energy transfer is probably a combination of Förster resonance energy transfer (FRET) and a coherent energy transfer mechanism.