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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/3931

Title: NON A PRIORI ANALYSIS OF FLUORESCENCE DECAY SURFACES OF EXCITED-STATE PROCESSES .2. INTERMOLECULAR EXCIMER FORMATION OF PYRENE
Authors: ANDRIESSEN, R
BOENS, N
DESCHRYVER, FC
AMELOOT, Marcel
Issue Date: 1991
Publisher: AMER CHEMICAL SOC
Citation: JOURNAL OF PHYSICAL CHEMISTRY, 95(5). p. 2047-2058
Abstract: The so-called global compartmental approach to analyze the kinetics of excited-state processes (Ameloot et al., preceding paper) is tested on simulated and real fluorescence data of the excimer formation of pyrene in a nonviscous solvent. The identifiability problem of a bicompartmental system is verified. The results of the bicompartmental analysis are compared to the results of the classical analysis. The following rate constant values for the excited-state processes of pyrene in isooctane at room temperature are obtained by the bicompartmental analysis: k01 = 2.17 X 10(6) s-1, k21 = 7.2 X 10(9) s-1 M-1, k02 = 14.8 X 10(6) s-1, and k12 = 5.7 X 10(6) s-1. The evidence for the nonexistence of ground-state dimers of pyrene in isooctane for concentrations lower than 1.5 X 10(-3) M is demonstrated. The species associated emission spectra (SAEMS) of the monomer and the excimer emission are calculated. It is shown that the unsubstituted intermolecular pyrene excimer is emitting at 375 nm.
Notes: KATHOLIEKE UNIV LEUVEN,DEPT CHEM,B-3001 HEVERLEE LEUVEN,BELGIUM. LIMBURG STATE UNIV CTR,B-3590 DIEPENBEEK,BELGIUM.
URI: http://hdl.handle.net/1942/3931
ISI #: A1991FA62100029
ISSN: 0022-3654
Type: Journal Contribution
Appears in Collections: Research publications

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