Formation of photoactive charge-transfer complexes between methylviologen and sacrificial electron donors. EDTA and triethanolamine
Journal Article
·
· J. Am. Chem. Soc.; (United States)
Mixtures of methylviologen and ethylenediaminetetraacetic (EDTA) acid or triethanolamine (TEOA) in aqueous solutions exhibit a new absorption band which is a function of the pH with a profile consistent with the requirement that the diprotonated amine function for TEOA is involved in the complexation. Calculated quantum yields of formation of the complex are a function of pH value, the composition of the solution, and decrease as the (donor)/(acceptor) ratio is increased. The latter effect suggests that excess donor may quench the excited state(s) of the complex and/or that a series of complexes is formed, each with its own photoactivity. A mechanism for the irreversible photogeneration of the complex in alkaline solution is given. 1 figure, 1 table.
- Research Organization:
- Boston Univ., MA
- OSTI ID:
- 5580543
- Journal Information:
- J. Am. Chem. Soc.; (United States), Journal Name: J. Am. Chem. Soc.; (United States) Vol. 105:20; ISSN JACSA
- Country of Publication:
- United States
- Language:
- English
Similar Records
Charge-transfer complexation between methylviologen and sacrificial electron donors EDTA, triethanolamine, and cysteine
Cage escape yields in the quenching of *Ru(bpy) sub 3 sup 2+ by methylviologen. Presence of triethanolamine as a sacrificial electron donor
Photodynamics of the tris(2,2'-bipyrazine)ruthenium(2+)/methylviologen/EDTA system in aqueous solution
Journal Article
·
Wed Nov 07 23:00:00 EST 1984
· J. Phys. Chem.; (United States)
·
OSTI ID:5894105
Cage escape yields in the quenching of *Ru(bpy) sub 3 sup 2+ by methylviologen. Presence of triethanolamine as a sacrificial electron donor
Journal Article
·
Thu Oct 03 00:00:00 EDT 1991
· Journal of Physical Chemistry; (United States)
·
OSTI ID:7273656
Photodynamics of the tris(2,2'-bipyrazine)ruthenium(2+)/methylviologen/EDTA system in aqueous solution
Journal Article
·
Wed May 14 00:00:00 EDT 1986
· J. Am. Chem. Soc.; (United States)
·
OSTI ID:5454788
Related Subjects
14 SOLAR ENERGY
140505 -- Solar Energy Conversion-- Photochemical
Photobiological
& Thermochemical Conversion-- (1980-)
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400500* -- Photochemistry
ADDUCTS
ALCOHOLS
ALKANES
AMINES
AMINO ACIDS
AQUEOUS SOLUTIONS
AZINES
BIPYRIDINES
CARBOXYLIC ACIDS
CHARGE EXCHANGE
CHELATING AGENTS
CHEMICAL REACTION YIELD
CHEMICAL REACTIONS
DATA
DISPERSIONS
EDTA
ENERGY-LEVEL TRANSITIONS
EXCITATION
EXPERIMENTAL DATA
HETEROCYCLIC COMPOUNDS
HYDROCARBONS
HYDROXY COMPOUNDS
INFORMATION
MIXTURES
NUMERICAL DATA
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PH VALUE
PHOTOCHEMICAL REACTIONS
PYRIDINES
SOLUTIONS
YIELDS
140505 -- Solar Energy Conversion-- Photochemical
Photobiological
& Thermochemical Conversion-- (1980-)
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400500* -- Photochemistry
ADDUCTS
ALCOHOLS
ALKANES
AMINES
AMINO ACIDS
AQUEOUS SOLUTIONS
AZINES
BIPYRIDINES
CARBOXYLIC ACIDS
CHARGE EXCHANGE
CHELATING AGENTS
CHEMICAL REACTION YIELD
CHEMICAL REACTIONS
DATA
DISPERSIONS
EDTA
ENERGY-LEVEL TRANSITIONS
EXCITATION
EXPERIMENTAL DATA
HETEROCYCLIC COMPOUNDS
HYDROCARBONS
HYDROXY COMPOUNDS
INFORMATION
MIXTURES
NUMERICAL DATA
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PH VALUE
PHOTOCHEMICAL REACTIONS
PYRIDINES
SOLUTIONS
YIELDS