|
N. V. Pokhvishcheva, M. A. Peshkova
Ionic liquid plasticezed optodes
Abstract
Ionic liquids (ILs) are successfully
implemented in various fields of science including improvement of analytical
characteristics of ion-selective sensors based on polymeric plasticized
matrices. However, utilization of ILs in optical sensors has not been studied
extensively thus far. In this contribution, we demonstrate how gradual
replacement of the conventional plasticizer by an ionic liquid affects optical
response characteristics. The shift of the sensor dynamic range originating
from the ion exchange constant decrease upon adding the IL was observed. The
possibility of developing IL-based optical sensors of individual ionic activity
was demonstrated as well.
Key words: optical sensors; ion-selective
sensors; ionic liquids; plasticizer; sensor dynamic range.
Copyright (C) Chemistry Dept., Moscow State University, 2002
|
|
