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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/3826

Title: COMPARTMENTAL ANALYSIS OF THE FLUORESCENCE DECAY SURFACE OF THE EXCIPLEX FORMATION BETWEEN 1-METHYLPYRENE AND TRIETHYLAMINE
Authors: KHALIL, MMH
BOENS, N
VAN DER AUWERAER, M
AMELOOT, Marcel
ANDRIESSEN, R
HOFKENS, J
DESCHRYVER, FC
Issue Date: 1991
Publisher: AMER CHEMICAL SOC
Citation: JOURNAL OF PHYSICAL CHEMISTRY, 95(23). p. 9375-9381
Abstract: The rate constant values for exciplex formation between 1-methylpyrene and triethylamine in toluene at room temperature were obtained by global compartmental analysis of the fluorescence decay surface measured as a function of triethylamine concentration. The following values were determined: k01 = (5.97 +/- 0.01) x 10(6) s-1, k21 = (6.54 +/- 0.19) x 10(8) s-1 M-1, k02 = (4.75 +/- 0.06) x 10(7) s-1, k12 = (1.86 +/- 0.06) x 10(8) s-1. There is no evidence for ground-state aggregates between 1-methylpyrene and triethylamine within the concentration range of triethylamine (up to 0.107 M) used in this study. The rate constant of exciplex formation k21 was found to be less than diffusion controlled. This can be rationalized in terms of structural changes at the nitrogen of triethylamine in the course of exciplex formation.
Notes: KATHOLIEKE UNIV LEUVEN,DEPT CHEM,CELESTIJNENLAAN 200F,B-3001 HEVERLEE,BELGIUM. LIMBURGS UNIV CENTRUM,DEPT CHEM,B-3590 DIEPENBEEK,BELGIUM.
URI: http://hdl.handle.net/1942/3826
DOI: 10.1021/j100176a062
ISI #: A1991GQ45700062
ISSN: 0022-3654
Type: Journal Contribution
Appears in Collections: Research publications

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