Formation of Hetero-Excimers in Radical Ion Recombination Reactions
Chemiluminescent reactions in ether solution between radical anions (A−) of bitolyl and anthracene and different radical cation perchlorates (D+ClO- 4) are investigated. It is found that singlet hetero-excimers 1(A− D+), and molecular triplet states, 3A* and 3D*, are the primary products of these reactions, the latter giving rise to molecular fluorescence by triplet-triplet annihilation and to hetero-excimer emission by mixed triplet-triplet annihilation. The results are, interpreted on the basis of the energies involved and discussed in terms of the relative yields in which these excited species are produced from the radical ions.
KeywordsTriplet State Chemiluminescent Reaction Encounter Complex Molecular Fluorescence Triplet Energy Transfer
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