Abstract
The interaction between the 2- and 3-methylindole derivatives has been studied using spectroscopic technique and molecular modeling. Solvent polarity was found to play a great role in the interaction with acetonitrile showing greatest interaction with indole derivatives but less hydrogen bonding contribution. Good agreement was found between the models used for the analysis of experimental data and the theoretical calculations. Moreover, on the part of the quenching, benzonitrile was found to be better quencher over chlorobenzene, with 3-methylindole giving higher dynamic-quenching constants. (C) 2017 Elsevier B.V. All rights reserved.