Luminescence quenching of the Bis(2,2'-bipyridine)aquo-2,2'-bipyridineiridium(III) ion and its conjugate base

Journal Article · Wed Jun 06 04:00:00 EDT 1979 · J. Am. Chem. Soc.; (United States)

DOI:https://doi.org/10.1021/ja00506a002· OSTI ID:5992571

Bergeron, S F; Watts, R J

Quenching of Ir(bpy)/sub 2/(H/sub 2/O)(bpy)/sup 3 +/ and IR(bpy)/sub 2/(OH)(bpy)/sup 2 +/ by a variety of charged metal complexes and neutral biacetyl has been studied. Stern--Volmer and quenching constants have been determined and diffusional rate constants for each donor--acceptor combination have been estimated. Quenching efficiencies are comparable to those of Ru(bpy)/sub 3//sup 2 +/ with similar quenchers. Quenching is believed to occur by both energy-transfer and electron-transfer mechanisms. The reduction potential of the luminescent state of Ir(bpy)/sub 2/(OH))bpy)/sup 2 +/ is estimated to be +1.84 V.

• Research Organization: Univ. of California, Santa Barbara
• OSTI ID: 5992571
• Journal Information: J. Am. Chem. Soc.; (United States), Journal Name: J. Am. Chem. Soc.; (United States) Vol. 101:12; ISSN JACSA
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
140505 -- Solar Energy Conversion-- Photochemical
Photobiological
& Thermochemical Conversion-- (1980-)
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400500* -- Photochemistry
CHEMISTRY
COMPLEXES
DATA
DATA FORMS
ELECTRON TRANSFER
ENERGY TRANSFER
EXPERIMENTAL DATA
GRAPHS
HEAT TREATMENTS
INFORMATION
IRIDIUM COMPLEXES
LUMINESCENCE
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANOMETALLIC COMPOUNDS
PHOTOCHEMISTRY
QUENCHING
TABLES
TRANSITION ELEMENT COMPLEXES