Metalloporphyrins as energy transfer catalysts: Progress report, August 1, 1984-July 31, 1987
Porphyrin excited state dynamics have been explored initially using a simple stationary sample cw laser technique to pump a steady state; the ground state spectrum is obtained by spinning the sample, and the excited state spectrum is obtained by subtraction. In this way triplet state Resoannce Rama (RR) spectra were obtained for the tetraphenylporphine (TPP) complexes of magnesium, zinc, and palladium, and excited state deligation was studied for pyridine and piperidine complexes of nickel TPP. In connection with the latter study, the systematics of RR frequencies and core size were established for 4- and 6-coordinate nickel porphyrins, and a 5-coordinate high-spin complex was definitively characterized. In addition RR spectra were analyzed for ruthenium porphyrins, as background for future excited state studies, and backbonding charcteristics were established. Charge transfer excited states of a 4,4'-bipyridine complex of ruthenium(II) were studied via the power-dependent photoinduced RR spectra produced with a YAG laser. RR spectra of metallo-OEP (octaethylporphyrin) cation radicals have also been studied.
- Research Organization:
- Princeton Univ., NJ (USA). Dept. of Chemistry
- DOE Contract Number:
- AC02-81ER10861
- OSTI ID:
- 5252060
- Report Number(s):
- DOE/ER/10861-8; ON: DE88007688
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
CATALYSTS
MAGNESIUM COMPLEXES
RAMAN SPECTRA
NICKEL COMPLEXES
PALLADIUM COMPLEXES
PORPHYRINS
CATALYTIC EFFECTS
EXCITED STATES
RUTHENIUM COMPLEXES
ZINC COMPLEXES
CATALYSIS
CHEMICAL BONDS
COBALT
DYNAMICS
LASERS
PIPERIDINES
PROGRESS REPORT
PULSE TECHNIQUES
PYRIDINE
ALKALINE EARTH METAL COMPLEXES
AMINES
AZINES
CARBOXYLIC ACIDS
COMPLEXES
DOCUMENT TYPES
ELEMENTS
ENERGY LEVELS
HETEROCYCLIC ACIDS
HETEROCYCLIC COMPOUNDS
MECHANICS
METALS
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PYRIDINES
SPECTRA
TRANSITION ELEMENT COMPLEXES
TRANSITION ELEMENTS
400201* - Chemical & Physicochemical Properties