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Proceedings Paper

Excitation energy relaxation in chlorophyll a Langmuir-Blodgett multilayer films
Author(s): Nikolai V. Tkachenko; D. Grandell; Marjo Ikonen; A. Jutila; V. Moritz; Helge Lemmetyinen
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Paper Abstract

Multilayer LB films of chlorophyll a in L-(alpha) -phosphatidylcholine dipalmitoyl matrix have been prepared in order to study excitation energy relaxation processes. Chlorophyll a layers were deposited on a plate previously covered with 10 layers of stearic acid and separated from each other by three layers of stearic acid, and finally covered by 8 layers of stearic acid to avoid interlayer interaction and to protect the sample. Films were deposited on quartz plates with ends cut at an angle of 45 degree(s) to use the full inner reflection of the probing beam. Fluorescence of the samples were studied in the time range from 10 ps to 10 ns and transient absorption in time range from 100 ns to 100 microsecond(s) . Results are discussed from the point of two types of chlorophyll arrangements on the films.

Paper Details

Date Published: 17 June 1993
PDF: 8 pages
Proc. SPIE 1921, Laser Spectroscopy of Biomolecules, (17 June 1993); doi: 10.1117/12.146125
Show Author Affiliations
Nikolai V. Tkachenko, Univ. of Helsinki (Finland)
D. Grandell, Univ. of Helsinki (Finland)
Marjo Ikonen, Univ. of Helsinki (Finland)
A. Jutila, Univ. of Helsinki (Finland)
V. Moritz, Univ. of Helsinki (Finland)
Helge Lemmetyinen, Univ. of Helsinki (Finland)


Published in SPIE Proceedings Vol. 1921:
Laser Spectroscopy of Biomolecules

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