Article details
Volume 75 Number 2
Agnieszka Kowalska-Baron1*, Preeti Choudhary2, Denise Montes2
1Institute of General Food Chemistry, Faculty of Biotechnology and Food Science, Technical University of Lodz, 90-924 Lodz, Poland
2Department of Natural Sciences, University of Houston-Downtown, 77002, Houston, USA
*agnieszka.kowalska-baron@p.lodz.pl
Pages: 3 - 14
This work is devoted to study how immobilization in the PVA films affects the fluorescence and phosphorescence lifetime of indole and its derivatives. The obtained results indicated that immobilization of the studied indoles in the PVA matrix, which leads to the increased microrigidity of the environment around the indole moiety, results in the increase of singlet and triplet excited state lifetime of the studied compounds. Most probably, the enhancement of the rigidity of the
environment near the chromophore reduces the rates of the non-radiative deactivation pathways, which leads to the increase of excited state lifetimes of the studied compounds.