On the Determination of Transition-Moment Directions from Emission Anisotropy Measurements

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Abstract

Based on the theory of photoluminescence polarization, a description of the determination of transition-moment directions in luminescent molecules oriented in a stretched polymer film is given. This method is applied to the linear trans-diphenylpolyenes (C2h symmetry): 1,8-diphenyl-octatetraene (DPO), 1,6-diphenylhexatriene (DPH) and 1,4-diphenylbutadiene (DPB). The same transition moment polarized along the long axis of DPO, DPH and DPB is responsible for absorption and fluorescence (B ≈0), when exciting in the long wave absorption band. The results are compared with relevant data obtained from dichroism measurements.

Original languageEnglish
Pages (from-to)1195-1199
Number of pages5
JournalZeitschrift fur Naturforschung - Section A Journal of Physical Sciences
Volume41
Issue number10
DOIs
StatePublished - 1 Oct 1986

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Diphenylhexatriene
Anisotropy
Absorption
Moment
moments
anisotropy
Photoluminescence
Dichroism
planetary waves
Polymer films
Fluorescence
dichroism
Absorption spectra
Polarization
Polymers
Molecules
absorption spectra
photoluminescence
Symmetry
fluorescence

Cite this

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abstract = "Based on the theory of photoluminescence polarization, a description of the determination of transition-moment directions in luminescent molecules oriented in a stretched polymer film is given. This method is applied to the linear trans-diphenylpolyenes (C2h symmetry): 1,8-diphenyl-octatetraene (DPO), 1,6-diphenylhexatriene (DPH) and 1,4-diphenylbutadiene (DPB). The same transition moment polarized along the long axis of DPO, DPH and DPB is responsible for absorption and fluorescence (B ≈0), when exciting in the long wave absorption band. The results are compared with relevant data obtained from dichroism measurements.",
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