Mechanism of terbium(III)-enhanced lyoluminescence of x-ray irradiated sodium chloride
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Add time:08/06/2019 Source:sciencedirect.com
Dissolution of x-ray irradiated sodium chloride in aqueous solution produces a short-lived dynamic solid/solution interface which is able to raise the hydrated terbium(III) cation to its lowest excited state (5D4) and thus to induce the well-known 5D4→7F-multiplet peak emissions of terbium(III). This contribution points out that the lowest excited state 5D4 of terbium(III) is attained by an intermolecular energy transfer from a lowest excited singlet state of a solid/solution interface-bound chloride anion which is generated by the recombination of a hydrated electron with the solid/solution interface-bound chlorine atom.
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