On the model-independent determination of 〈P4〉 from time- and angle-resolved fluorescence depolarization on macroscopically oriented lipid multibilayer systems

Analysis of angle- and time-resolved fluorescence depolarization experiments on DPH and TMA-DPH embedded in macroscopically ordered lipid multibilayer systems shows that the order parameters 〈P2〉 and 〈P4〉 and the angle between the transition dipoles of the probe molecule can be obtained without maki...

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Bibliographic Details
Published in:Chemical physics 1989-02, Vol.130 (1-3), p.271-278
Main Authors: Van Langen, Herman, Van Ginkel, Gijs, Levine, Yehudi K.
Format: Article
Language:English
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Summary:Analysis of angle- and time-resolved fluorescence depolarization experiments on DPH and TMA-DPH embedded in macroscopically ordered lipid multibilayer systems shows that the order parameters 〈P2〉 and 〈P4〉 and the angle between the transition dipoles of the probe molecule can be obtained without making use of a particular reorientational model. The values found for 〈P4〉 correspond to the higher values obtained from model-dependent analysis of anisotropy experiments on vesicle systems. The angles between the transition dipoles obtained here are in excellent agreement with those obtained from steady-state experiments.
ISSN:0301-0104
DOI:10.1016/0301-0104(89)87056-9