Abstract
A qualitative study has been made of the cation-anion annihilation in polar solvents for the hydrocarbons naphthalene, anthracene and tetracene. The reaction leads to a final state in which one of the two molecules occurs in the triplet state or the lowest singlet excited state. The crossing from the initial to the final state may take place by a resonance or a non-resonance electron transfer depending on the location of the excited state of the molecule. For naphthalene one finds two very efficient reactions both governed by resonance transfer one of which leads to the triplet and the other to the lowest excited singlet. For anthracene and tetracene the most efficient reaction involves a non-resonance transfer to a final state in which one of the two molecules occurs in the triplet state.
The quenching of triplet molecules by the cations and anions can have a very unfavourable effect on the quantum yield of the annihilation process.
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Hoytink, G.J. (1973). Cation-Anion Annihilation of Naphthalene, Anthracene, and Tetracene. In: Cormier, M.J., Hercules, D.M., Lee, J. (eds) Chemiluminescence and Bioluminescence. Springer, Boston, MA. https://doi.org/10.1007/978-1-4757-0638-3_12
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DOI: https://doi.org/10.1007/978-1-4757-0638-3_12
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