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  Excitation of triplet excitons in aromatic single crystals by guest-host energy transfer

Zimmermann, H., Stehlik, D., & Hausser, K. H. (1971). Excitation of triplet excitons in aromatic single crystals by guest-host energy transfer. Chemical Physics Letters, 11(4), 496-500. doi:10.1016/0009-2614(71)80393-7.

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ChemPhysLett_11_1971_496.pdf (Any fulltext), 684KB
 
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 Creators:
Zimmermann, Herbert1, Author           
Stehlik, D.2, Author           
Hausser, Karl H.3, Author           
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1Department of Biomolecular Mechanisms, Max Planck Institute for Medical Research, Max Planck Society, ou_1497700              
2Max Planck Institute for Medical Research, Max Planck Society, ou_1125545              
3Department of Molecular Physics, Max Planck Institute for Medical Research, Max Planck Society, ou_1497705              

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 Abstract: Selective excitation of singlet states of one guest molecule (phenazine or acridine as donor) in a host single crystal (fluorene or diphenyl) populates the lowest triplet state of a second guest molecule (naphthalene-d8 or pyrene-d10 as acceptor). Phosphorescence as well as ESR were used to detect the population of the triplet states of the acceptor. The results can be interpreted only as energy transfer from the donor singlet to the acceptor triplet state either via intermolecular intersystem crossing from a donor singlet state to the lowest triplet state of the host or via intramolecular intersystem crossing and triplet-triplet energy transfer to the host from a higher triplet state or from a highly excited vibrational level of the triplet ground state of the donor, followed both by triplet exciton diffusion and exciton-trapping in the acceptor triplet state. High quantum yields up to 5% can be estimated for the observed energy transfer process.

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Language(s): eng - English
 Dates: 1971-06-072001-12-211971-11-01
 Publication Status: Issued
 Pages: 5
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 Rev. Type: Peer
 Identifiers: DOI: 10.1016/0009-2614(71)80393-7
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Title: Chemical Physics Letters
  Other : Chem. Phys. Lett.
Source Genre: Journal
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Publ. Info: Amsterdam : North-Holland
Pages: - Volume / Issue: 11 (4) Sequence Number: - Start / End Page: 496 - 500 Identifier: ISSN: 0009-2614
CoNE: https://pure.mpg.de/cone/journals/resource/954925389241