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|Title: ||NON A PRIORI ANALYSIS OF FLUORESCENCE DECAY SURFACES OF EXCITED-STATE PROCESSES .2. INTERMOLECULAR EXCIMER FORMATION OF PYRENE|
|Authors: ||ANDRIESSEN, R|
|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.|
|ISI #: ||A1991FA62100029|
|Type: ||Journal Contribution|
|Appears in Collections: ||Research publications|
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