NDLI: Spectral-Kinetic Characteristics of Pyrene Fluorescence in Model Systems and Membranes of Etioplasts

Content Provider	Springer Nature Link
Author	Denev, I. D. Klyuchareva, E. A. Stupak, A. P. Savchenko, G. E.
Copyright Year	2000
Abstract	The decay kinetics parameters of monomer and excimer fluorescence of pyrene in artificial galactolipid protein-free micelles and membranes of prolamellar bodies (PLB) of etioplasts have been determined. A complex law of probe fluorescence decay in artificial and native membranes has been discovered. It has been found that the addition of protochlorophyllide (Pd) to lipid micelles led to a considerable reduction in the lifetime of the long-lived component of the fluorescence-decay kinetics of the monomer form of pyrene (τ$_{2}$) and to the appearance of luminescence in the region of 640 nm in the stationary spectra of fluorescence at excitation of the pyrene molecules present in the bilayer. In native membranes of etioplasts, the monomer duration τ$_{2}$ did not depend on the pigment content and the Pd fluorescence upon excitation through pyrene was absent. The membranes of etioplasts and the pigment-containing artificial micelles did not differ in the τ$_{2}$ value of the excimer. They only differed in the contribution of the long-lived component to the total fluorescence (low in native membranes). The pigment-protein interaction in the etioplast membranes and the absence from them of pigment directly associated with lipids are discussed.
Starting Page	1023
Ending Page	1029
Page Count	7
File Format	PDF
ISSN	00219037
Journal	Journal of Applied Spectroscopy
Volume Number	67
Issue Number	6
e-ISSN	15738647
Language	English
Publisher	Kluwer Academic Publishers-Plenum Publishers
Publisher Date	2000-01-01
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Analytical Chemistry Atomic and Molecular Structure and Spectra
Content Type	Text
Resource Type	Article
Subject	Spectroscopy Condensed Matter Physics

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