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Abnormal broadening in triplet-to-triplet absorption spectra caused by aromatic solvents |
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| Authors: | MV Alfimov VI Gerko LS Popov VF Razumov |
| Institution: | Laboratory of Solid State Photochemistry, Institute of Chemical Physics (Branch), Academy of Sciences, 142432 Chernogolovka, Moscow Region, USSR |
| Abstract: | The triplet-triplet absorption spectra of a number of aromatic molecules were shown to be broadened in low temperature matrices formed by aromatic solvents (toluene, 4-isopropylbiphenyl) as compared with those in aliphatic solvents (ethanol, methylcyclohexane, triethylamine). The effect is exponentially dependent on the energy of the upper triplet state of the solute molecule. The phenomenon is discussed in terms of a strong exchange-resonance interaction between the triplet states of solute and solvent. |
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