Excitation energy relaxation in chlorophyll a Langmuir-Blodgett multilayer films

Nikolai V. Tkachenko; D. Grandell; Marjo Ikonen; A. Jutila; V. Moritz; Helge Lemmetyinen

doi:10.1117/12.146125

17 June 1993 Excitation energy relaxation in chlorophyll a Langmuir-Blodgett multilayer films

Nikolai V. Tkachenko, D. Grandell, Marjo Ikonen, A. Jutila, V. Moritz, Helge Lemmetyinen

Proceedings Volume 1921, Laser Spectroscopy of Biomolecules; (1993) https://doi.org/10.1117/12.146125
Event: Laser Spectroscopy of Biomolecules: 4th International Conference on Laser Applications in Life Sciences, 1992, Jyvaskyla, Finland

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.

Citation Download Citation

Nikolai V. Tkachenko, D. Grandell, Marjo Ikonen, A. Jutila, V. Moritz, and Helge Lemmetyinen "Excitation energy relaxation in chlorophyll a Langmuir-Blodgett multilayer films", Proc. SPIE 1921, Laser Spectroscopy of Biomolecules, (17 June 1993); https://doi.org/10.1117/12.146125

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