Abstract
The photochemistry of I— in boric acid glass has been investigated. The primary production of iodine atoms and electrons can be followed by observing their absorption spectra. Under suitable conditions these species show marked stability in the glass at room temperature. Subsequent dark reactions lead to the formation of I2—. Further information about this radical is derived from studying the effect of 185-mμ and x-ray irradiations on I2 doped glass; I2— is probably formed by the attachment of electrons to I2 molecules. The photolysis of I3— has also been investigated. I3— appears to have an intense absorption centered at ∼190 mμ, which involves a CTTS type of excitation. The role of cage effect on the radiation-induced processes is discussed.
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