Determination of the Transition-Moment Directions from Photoselection in Partially Oriented Systems

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Abstract

A formula is derived for the emission anisotropy r(β, Rs) of a polymer film as a function of the stretch ratio R5 of the film and of the angle β between the absorbing and emitting oscillators for the case when the long axis of the molecule makes an angle φ = 90° with the absorbing oscillator. This relation is verified, together with that obtained previously for φ = 0°. on the example of acridone and anthracene in polyvinyl alcohol. The experimental results obtained for r(β, Rs) as a function of Rs confirm the character of the predicted theoretical curves. The reasons for the lack of quantitative agreement is also discussed.

Original languageEnglish
Pages (from-to)808-812
Number of pages5
JournalZeitschrift fur Naturforschung - Section A Journal of Physical Sciences
Volume42
Issue number8
DOIs
StatePublished - 1 Aug 1987

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Polyvinyl Alcohol
Absorbing
Polymer films
Anisotropy
oscillators
Moment
moments
Angle
Molecules
polyvinyl alcohol
Alcohol
Stretch
anthracene
Polymers
anisotropy
Curve
polymers
Experimental Results
curves
molecules

Cite this

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abstract = "A formula is derived for the emission anisotropy r(β, Rs) of a polymer film as a function of the stretch ratio R5 of the film and of the angle β between the absorbing and emitting oscillators for the case when the long axis of the molecule makes an angle φ = 90° with the absorbing oscillator. This relation is verified, together with that obtained previously for φ = 0°. on the example of acridone and anthracene in polyvinyl alcohol. The experimental results obtained for r(β, Rs) as a function of Rs confirm the character of the predicted theoretical curves. The reasons for the lack of quantitative agreement is also discussed.",
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N2 - A formula is derived for the emission anisotropy r(β, Rs) of a polymer film as a function of the stretch ratio R5 of the film and of the angle β between the absorbing and emitting oscillators for the case when the long axis of the molecule makes an angle φ = 90° with the absorbing oscillator. This relation is verified, together with that obtained previously for φ = 0°. on the example of acridone and anthracene in polyvinyl alcohol. The experimental results obtained for r(β, Rs) as a function of Rs confirm the character of the predicted theoretical curves. The reasons for the lack of quantitative agreement is also discussed.

AB - A formula is derived for the emission anisotropy r(β, Rs) of a polymer film as a function of the stretch ratio R5 of the film and of the angle β between the absorbing and emitting oscillators for the case when the long axis of the molecule makes an angle φ = 90° with the absorbing oscillator. This relation is verified, together with that obtained previously for φ = 0°. on the example of acridone and anthracene in polyvinyl alcohol. The experimental results obtained for r(β, Rs) as a function of Rs confirm the character of the predicted theoretical curves. The reasons for the lack of quantitative agreement is also discussed.

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