Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10556869 | Microchemical Journal | 2011 | 4 Pages |
Abstract
In this work, the interaction of an ionic liquid (IL) 1-octyl-3-methylimidazolium chloride ([Omim]Cl) and L-tryptophan was investigated with fluorescence spectroscopic method. The quenching mechanism and binding characteristics of [Omim]Cl with L-tryptophan at different temperatures were studied from fluorescence measurement. The thermodynamic parameters such as free energy change (ÎG), enthalpy change (ÎH) and entropy change (ÎS), were calculated by thermodynamic equations. The experimental results indicated that [Omim]Cl and L-tryptophan had weak interaction and the mechanism of quenching belonged to static quenching. Hydrogen bonds and van der Waals interactions played important roles in the binding of [Omim]Cl with L-tryptophan.
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
Yunchang Fan, Sheli Zhang, Jichuan Kong, Juan Miao,