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Femtosecond study of laser coloring soluble in water: the coumarins; Etude femtoseconde de colorants laser solubles dans l`eau: les coumarines

Abstract

This thesis concerns the study of four hydro soluble coumarins A.T.C., D.M.A.T.C., D.A.T.C. et C.H.O.S., analogues of classical coumarins C120, C311, C1 and C102. These molecules are made hydro soluble because of the substitution in position 4- of the methyl group by a polyether group. The mechanisms of deactivation are studied because of fluorescence methods (resolved in time and transient absorption) which allow to study the reactional dynamics of coumarins after luminous excitement. SEveral time scales, from a few femto seconds to the nanosecond have been approachable and have allowed investigations on different processes: relaxation S{sub n} {yields} S{sub 1}, solvation dynamics, orientational diffusion of the solution and deactivation process S{sub 1} {yields} S{sub 0} of radiative and non radiative relaxation in different solvents. (N.C.)
Authors:
Publication Date:
Nov 29, 1996
Product Type:
Thesis/Dissertation
Report Number:
FRCEA-TH-584
Reference Number:
SCA: 426002; PA: FRC-97:003534; EDB-99:016511; SN: 98001913290
Resource Relation:
Other Information: TH: These (D. es Sc.); PBD: 29 Nov 1996
Subject:
42 ENGINEERING NOT INCLUDED IN OTHER CATEGORIES; LASERS; COUMARIN; HYDROGEN; SPECTROSCOPY; SOLVATION; RELAXATION; DIFFUSION; ROTATION
OSTI ID:
303855
Research Organizations:
CEA Centre d`Etudes de Saclay, 91 - Gif-sur-Yvette (France). Dept. de Recherche sur l`Etat Condense, les Atomes et les Molecules; Paris-6 Univ., 75 (France)
Country of Origin:
France
Language:
French
Other Identifying Numbers:
Other: ON: DE98732040; TRN: FR9703534
Availability:
OSTI as DE98732040
Submitting Site:
FR
Size:
258 p.
Announcement Date:

Citation Formats

Cassara, L. Femtosecond study of laser coloring soluble in water: the coumarins; Etude femtoseconde de colorants laser solubles dans l`eau: les coumarines. France: N. p., 1996. Web.
Cassara, L. Femtosecond study of laser coloring soluble in water: the coumarins; Etude femtoseconde de colorants laser solubles dans l`eau: les coumarines. France.
Cassara, L. 1996. "Femtosecond study of laser coloring soluble in water: the coumarins; Etude femtoseconde de colorants laser solubles dans l`eau: les coumarines." France.
@misc{etde_303855,
title = {Femtosecond study of laser coloring soluble in water: the coumarins; Etude femtoseconde de colorants laser solubles dans l`eau: les coumarines}
author = {Cassara, L}
abstractNote = {This thesis concerns the study of four hydro soluble coumarins A.T.C., D.M.A.T.C., D.A.T.C. et C.H.O.S., analogues of classical coumarins C120, C311, C1 and C102. These molecules are made hydro soluble because of the substitution in position 4- of the methyl group by a polyether group. The mechanisms of deactivation are studied because of fluorescence methods (resolved in time and transient absorption) which allow to study the reactional dynamics of coumarins after luminous excitement. SEveral time scales, from a few femto seconds to the nanosecond have been approachable and have allowed investigations on different processes: relaxation S{sub n} {yields} S{sub 1}, solvation dynamics, orientational diffusion of the solution and deactivation process S{sub 1} {yields} S{sub 0} of radiative and non radiative relaxation in different solvents. (N.C.)}
place = {France}
year = {1996}
month = {Nov}
}