4 November 2003 Fluorescence properties of 3,6-dihydroxyphthalimide-triethylamine system in dichloroethane
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Proceedings Volume 5226, 12th International School on Quantum Electronics: Laser Physics and Applications; (2003) https://doi.org/10.1117/12.519083
Event: 12th International School on Quantum Electronics Laser Physics and Applications, 2002, Varna, Bulgaria
Abstract
Fluorescence emission of the efficient dye laser compound 3,6-dihydroxyphthalimide in dichloroethane solution has been investigated as a function of the concentration of the added strong proton acceptor triethylamine by both steady-state and time-resolved (time-correlated single-photon counting) techniques. Complex decay behavior has been observed. The dominating portion of the emission of the molecules follows the Stern-Volmer quenching. The other part of emission, clearly observed at high concentrations of triethylamine, is assigned to hydrogen-bonded complexes. The fully ionized 3,6-dihydroxyphthalimide is detected as a product of the irreversible excited-state proton-transfer reaction. In solution of neat triethylamine an excited ion pair is formed upon excitation of the hydrogen-bonded 3,6-dihydroxyphthalimide molecules.
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Nina Sultanova, Nina Sultanova, Teodora Staneva, Teodora Staneva, } "Fluorescence properties of 3,6-dihydroxyphthalimide-triethylamine system in dichloroethane", Proc. SPIE 5226, 12th International School on Quantum Electronics: Laser Physics and Applications, (4 November 2003); doi: 10.1117/12.519083; https://doi.org/10.1117/12.519083
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