Up-Conversion Photoluminescence in Polyfluorene Doped with Metal(II)-Octaethyl Porphyrins

The up‐conversion photoluminescence (PL) in films of polyfluorene (PF) doped with metallated porphyrins is reported for the first time. The dependence of the up‐conversion process on the pump laser intensity and wavelength, the central metal moiety of the dopants, and the temperature is presented. U...

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Bibliographic Details
Published inAdvanced materials (Weinheim) Vol. 15; no. 24; pp. 2095 - 2098
Main Authors Keivanidis, P.E., Baluschev, S., Miteva, T., Nelles, G., Scherf, U., Yasuda, A., Wegner, G.
Format Journal Article
LanguageEnglish
Published Weinheim WILEY-VCH Verlag 17.12.2003
WILEY‐VCH Verlag
Subjects
Photoluminescence
Polyfluorenes
Porphyrins
Two-photon absorption
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Summary:The up‐conversion photoluminescence (PL) in films of polyfluorene (PF) doped with metallated porphyrins is reported for the first time. The dependence of the up‐conversion process on the pump laser intensity and wavelength, the central metal moiety of the dopants, and the temperature is presented. Up‐conversion emission is observed at pump intensities as low as 2 kW cm–2. Comparison of the PF integral PL intensities after laser excitation by 532, 543, and 405 nm enables the discussion of the energy‐transfer mechanism and the efficiency of the process.
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ISSN:0935-9648
1521-4095
DOI:10.1002/adma.200305717