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Proceedings Paper

Fluorescence properties of 3,6-dihydroxyphthalimide-triethylamine system in dichloroethane
Author(s): Nina Sultanova; Teodora Staneva
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Paper 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.

Paper Details

Date Published: 4 November 2003
PDF: 5 pages
Proc. SPIE 5226, 12th International School on Quantum Electronics: Laser Physics and Applications, (4 November 2003); doi: 10.1117/12.519083
Show Author Affiliations
Nina Sultanova, Bourgas Prof. Assen Zlatarov Univ. (Bulgaria)
Teodora Staneva, Bourgas Prof. Assen Zlatarov Univ. (Bulgaria)


Published in SPIE Proceedings Vol. 5226:
12th International School on Quantum Electronics: Laser Physics and Applications
Peter A. Atanasov; Alexander A. Serafetinides; Ivan N. Kolev, Editor(s)

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