Sensitization of the luminescence of europium and terbium ions by orotic acids in aqueous solutions
Journal Article
·
· Sov. J. Coordinat. Chem.; (United States)
OSTI ID:6962082
The stability constants of the complexes of Eu/sup 3 +/ and Tb/sup 3 +/ with the dianions of orotic acid, 2-thioorotic acid, and 3-N-methylorotic acid have been determined at 20/sup 0/C and ..mu.. = 0.15 by a pH-potentiometric method. The influence of orotic acids on the luminescence properties of Eu/sup 3 +/ and Tb/sup 3 +/ has been studied. It has been shown as a result of a study of the excited states of orotic acid and its derivatives by a method based on the sensitized luminescence of the lanthanides that it is preferable to use the Tb/sup 3 +/ ion as an energy acceptor, since quenching of the luminescence by means of a charge-transfer process is observed in the complexes formed by the Eu/sup 3 +/ ion.
- OSTI ID:
- 6962082
- Journal Information:
- Sov. J. Coordinat. Chem.; (United States), Journal Name: Sov. J. Coordinat. Chem.; (United States) Vol. 13:5; ISSN SJCCD
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
AQUEOUS SOLUTIONS
AZINES
BINDING ENERGY
CARBOXYLIC ACIDS
CHLORIDES
CHLORINE COMPOUNDS
COMPLEXES
COMPLEXOMETRY
DISPERSIONS
ELECTRON TRANSFER
ELECTRONS
ELEMENTARY PARTICLES
ENERGY
ENERGY LEVELS
EUROPIUM CHLORIDES
EUROPIUM COMPLEXES
EUROPIUM COMPOUNDS
EXCITED STATES
FERMIONS
HALIDES
HALOGEN COMPOUNDS
HETEROCYCLIC ACIDS
HETEROCYCLIC COMPOUNDS
HYDROXY COMPOUNDS
LEPTONS
LUMINESCENCE
MIXTURES
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OROTIC ACID
PHOTOLUMINESCENCE
POTENTIOMETRY
PYRIMIDINES
RARE EARTH COMPLEXES
RARE EARTH COMPOUNDS
SOLUTIONS
TERBIUM CHLORIDES
TERBIUM COMPLEXES
TERBIUM COMPOUNDS
TITRATION
URACILS
VALENCE
400201* -- Chemical & Physicochemical Properties
AQUEOUS SOLUTIONS
AZINES
BINDING ENERGY
CARBOXYLIC ACIDS
CHLORIDES
CHLORINE COMPOUNDS
COMPLEXES
COMPLEXOMETRY
DISPERSIONS
ELECTRON TRANSFER
ELECTRONS
ELEMENTARY PARTICLES
ENERGY
ENERGY LEVELS
EUROPIUM CHLORIDES
EUROPIUM COMPLEXES
EUROPIUM COMPOUNDS
EXCITED STATES
FERMIONS
HALIDES
HALOGEN COMPOUNDS
HETEROCYCLIC ACIDS
HETEROCYCLIC COMPOUNDS
HYDROXY COMPOUNDS
LEPTONS
LUMINESCENCE
MIXTURES
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OROTIC ACID
PHOTOLUMINESCENCE
POTENTIOMETRY
PYRIMIDINES
RARE EARTH COMPLEXES
RARE EARTH COMPOUNDS
SOLUTIONS
TERBIUM CHLORIDES
TERBIUM COMPLEXES
TERBIUM COMPOUNDS
TITRATION
URACILS
VALENCE