Effect of relaxation processes on fluorescence lifetime and polarization characteristics of rhodamine 6G in glycerol

Journal Article · Sat Nov 01 04:00:00 EST 1986 · J. Appl. Spectrosc. (Engl. Transl.); (United States)

DOI:https://doi.org/10.1007/BF00667071· OSTI ID:6808858

Levshin, L V; Struganova, I A; Tolevtaev, B N

Some new phenomena which can be attributed to the relaxation kinetics of the distribution halfwidth over the 0-0 frequencies for organic dye solutions have been discovered in the present work. The kinetic and polarization characteristics of flourescence from the viscous dipolar solutions of the dyes exhibiting dynamic inhomogeneous broadening upon excitation near the absorption band center have been studied. The objects of the study are rhodamine 6G solutions in glycerol and ethanol at the concentration 10/sup -//sub 6/ mole/liter. It was concluded that the presence of the dip in the flourescence lifetime and the hump in the fluorescence polarization dependences on emission wavelength in the viscous dipolar solution of rhodamine 6G has been detected. The phenomena have been explained by the formation of the excited-state nonequilibrium distribution of the flourescence centers over the 0-0 transition frequencies upon monochromatic excitation and by the subsequent relaxation of the nonequilibrium distribution into the equilibrium one.

• OSTI ID: 6808858
• Journal Information: J. Appl. Spectrosc. (Engl. Transl.); (United States), Journal Name: J. Appl. Spectrosc. (Engl. Transl.); (United States) Vol. 44:5; ISSN JASYA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360603 -- Materials-- Properties
42 ENGINEERING
420300* -- Engineering-- Lasers-- (-1989)
ABSORPTION SPECTROSCOPY
ALCOHOLS
AMINES
CARBOXYLIC ACIDS
DE-EXCITATION
DYE LASERS
DYES
EMISSION SPECTROSCOPY
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EXCITATION
EXCITED STATES
FLUORESCENCE
FLUORESCENCE SPECTROSCOPY
GLYCEROL
HETEROCYCLIC ACIDS
HETEROCYCLIC COMPOUNDS
HYDROXY COMPOUNDS
LASER MATERIALS
LASER SPECTROSCOPY
LASERS
LINE BROADENING
LIQUID LASERS
LUMINESCENCE
MATERIALS
MONOCHROMATORS
NEODYMIUM LASERS
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
REAGENTS
RELAXATION TIME
RHODAMINES
SOLID STATE LASERS
SPECTROSCOPY