Excitation energy relaxation in chlorophyll a Langmuir-Blodgett multilayer films

1993 ◽  
Author(s):  
Nikolai V. Tkachenko ◽  
D. Grandell ◽  
Marjo Ikonen ◽  
A. Jutila ◽  
V. Moritz ◽  
...  
Keyword(s):  
Excitation Energy ◽  
Chlorophyll A ◽  
Multilayer Films ◽  
Energy Relaxation ◽  
Langmuir Blodgett

Direct trapping excitation energy transfer from rhodamine B to crystal violet in Langmuir-Blodgett monolayer and stacked multilayer films

1993 ◽  
Vol 177 (3) ◽  
pp. 591-600 ◽  
Author(s):  
Nobuhiro Ohta ◽  
Naoto Tamai ◽  
Toshiya Kuroda ◽  
Tomoko Yamazaki ◽  
Yoshinobu Nishimura ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Excitation Energy ◽  
Crystal Violet ◽  
Rhodamine B ◽  
Excitation Energy Transfer ◽  
Multilayer Films ◽  
Langmuir Blodgett

Excitation energy relaxation of dye molecules in Langmuir-Blodgett monolayer films

1989 ◽  
Vol 179 (1-2) ◽  
pp. 451-455 ◽  
Author(s):  
Naoto Tamai ◽  
Tomoko Yamazaki ◽  
Iwao Yamazaki
Keyword(s):  
Excitation Energy ◽  
Energy Relaxation ◽  
Dye Molecules ◽  
Monolayer Films ◽  
Langmuir Blodgett

Picosecond dynamics of excitation-energy relaxation of dye molecules in Langmuir–Blodgett monolayers

1990 ◽  
Vol 68 (9) ◽  
pp. 1013-1022 ◽  
Author(s):  
Naoto Tamai ◽  
Tomoko Yamazaki ◽  
Iwao Yamazaki
Keyword(s):  
Excitation Energy ◽  
Energy Transport ◽  
Stokes Shift ◽  
Energy Relaxation ◽  
Fluorescence Decay ◽  
Ultrametric Space ◽  
Time Resolved Fluorescence ◽  
Time Resolved ◽  
Langmuir Blodgett ◽  
Dye Molecule

Fluorescence-decay curves and time-resolved fluorescence spectra of N, N′-dioctadecylrhodamine B in Langmuir–Blodgett monolayers have been measured by means of a picosecond time-resolved fluorescence spectrophotometer. The excitation energy relaxation of the dye molecule in the monolayers was compared at 295 and 80 K in the concentration range from 0.02 to 31 mol%. The relaxation of the dynamic Stokes shift was found to decay logarithmically with time in longer time regions when the concentration of N, N′-dioctadecylrhodamine B < 5 mol%. The fluorescence decays can be analyzed by an equation including a stretched exponential function. The mechanisms of singlet excitation-energy relaxation were interpreted in terms of (i) the energy migration among energetically disordered monomer sites represented by ultrametric space (hierarchical energy distribution) or the Gaussian distribution of the density of excited states and (ii) the energy trapping by two-dimensional aggregates. It was found that the relaxation of the dynamic Stokes shift and the fluorescence decay can be estimated by the diffusion length of the excitation-energy transport.

PHOTOPHYSICAL PROPERTIES OF CHLOROPHYLL a LANGMUIR-BLODGETT MULTILAYER FILMS

1993 ◽  
Vol 58 (2) ◽  
pp. 284-289 ◽  
Author(s):  
N. V. Tkachenko ◽  
D. Grandell ◽  
M. Ikonen ◽  
A. Jutila ◽  
V. Moritz ◽  
...  
Keyword(s):  
Chlorophyll A ◽  
Photophysical Properties ◽  
Multilayer Films ◽  
Langmuir Blodgett

Chlorophyll a–violaxanthin interactions in monolayers at air–water interface and in Langmuir–Blodgett films

2000 ◽  
Vol 19 (2) ◽  
pp. 117-125 ◽  
Author(s):  
Wieslaw I Gruszecki ◽  
Bogumil Zelent ◽  
Heidar-Ali Tajmir-Riahi ◽  
Gongming Wang ◽  
Toufik Taleb ◽  
...  
Keyword(s):  
Chlorophyll A ◽  
Water Interface ◽  
Langmuir Blodgett ◽  
Air Water Interface ◽  
Langmuir Blodgett Films
Sign in / Sign up

Export Citation Format

Share Document