Self-indicating, simultaneous multianalyte recognition using an ionic liquid
Kavanagh, Andrew and Byrne, Robert and Diamond, Dermot and Radu, Aleksandar (2009) Self-indicating, simultaneous multianalyte recognition using an ionic liquid. In: Pittcon 2009 - 60th Pittsburg Conference on Analytical Chemistry and Applied Spectroscopy, 8-13 March 2009, Chicago, Illinois,USA.
Full text available as:
Ionic Liquids (ILs) are the subject of increased diverse research worldwide due to many attractive inherent characteristics such as high thermal stability, negligible
vapour pressure and physical and chemical diversity due to the many permutations possible1.
We have studied the IL [P6,6,6,14][DCA] as a self-indicating, simultaneous, multianalyte recognition system for heavy metal ions such as Cu2+ and Co2+. When
incorporated into a polymer membrane, this system maintains all these attractive features with the added bonus of the IL now being self-plasticizing. The optical response is obtained via co-ordination of the heavy metal to the anion [DCA]-.2
A system like this can be viewed as a building block for future chemical sensing platforms; where the system itself is responsive toward an analyte, thereby eliminating
the need for a reactive chromophore. The resulting system can also be viewed as an optode containing only two components (polymer and plasticizer) as opposed to a
classical 5-component optode (polymer, plasticizer, ionophore, ion-exchanger, dye).
This simplification of components shows potential for further studies in electrochemical-based sensors (ISE’s).
Our aim will be to present the results obtained thus far from both optical and structural characterization studies.
1. Wilkes, J. S., Green Chemistry, 2002, 4, (2), 73-80.
2. Vangdal, B.; Carranza, J.; Lloret, F.; Julve, M.; Sletten, J., Journal of the Chemical Society-Dalton Transactions 2002, (4), 566-574.
Archive Staff Only: edit this record