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Photoionization of Ferrocyanide at Various Wavelengths in Polar Glasses at 77°K
Author(s) -
Moan Johan,
Shirom Miriam,
Weiss Matitia
Publication year - 1973
Publication title -
israel journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.908
H-Index - 54
eISSN - 1869-5868
pISSN - 0021-2148
DOI - 10.1002/ijch.197300004
Subject(s) - chemistry , scavenger , potassium ferrocyanide , photochemistry , ferrocyanide , photoionization , electron , radical , solvent , ethylene glycol , wavelength , solvated electron , singlet state , irradiation , analytical chemistry (journal) , inorganic chemistry , ionization , atomic physics , excited state , ion , radiolysis , organic chemistry , optics , physics , electrode , quantum mechanics , nuclear physics
Abstract Solutions of potassium ferrocyanide in 10 N NaOH glass and in ethylene‐glycol/water (3/1) glass at 77°K were irradiated with UV‐light. The ratio of the yields of radicals in the two solvents, as well as the scavenging efficiency of an election scavenger (acrylamide) in 10 N NaOH, were found to change with the irradiation wavelength. From the experiments the conclusion is drawn that the ejection of electrons may occur from different electronic levels depending on the excitation wavelength and that the electrons ejected from a charge‐transfer‐to‐solvent state have higher reactivity with a scavenger than electrons ejected from intramolecular singlet states.