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A two-component polymeric optode membrane based on a multifunctional ionic liquid

Kavanagh, Andrew and Byrne, Robert and Diamond, Dermot and Radu, Aleksandar (2011) A two-component polymeric optode membrane based on a multifunctional ionic liquid. Analyst, 136 . pp. 348-353. ISSN 0003-2654

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Abstract

This work details the use of a 2-component optode membrane which is capable of generating three distinct colours in the presence of Cu2+ and Co2+ ions. It has been found that the ionic liquid (IL) trihexyltetradecylphosphonium dicyanamide [P6,6,6,14][DCA] can act as plasticizer, ligand and transducer dye when used in poly(vinylchloride) (PVC) membranes, which significantly simplifies the optode membrane platform. Upon exposure to an aqueous Cu2+ solution, a yellow colour is generated within the membrane, while exposure to aqueous Co2+ solution generates a blue colour. Exposure to a solution containing both ions produces a green colour. Vibrational spectroscopy has been used to investigate molecular basis of the IL-metal binding mechanism. Analytical characteristics of the membranes including the effect of interfering ions, binding constants and the limit of detection for both ions have been estimated. Finally the case of simultaneous dual-analyte recognition is presented based on two distinct absorption maxima.

Item Type:Article (Published)
Refereed:Yes
Subjects:Physical Sciences > Analytical chemistry
Physical Sciences > Chemistry
DCU Faculties and Centres:DCU Faculties and Schools > Faculty of Science and Health > School of Chemical Sciences
Research Initiatives and Centres > CLARITY: The Centre for Sensor Web Technologies
Publisher:Royal Society of Chemistry
Official URL:http://dx.doi.org/10.1039/C0AN00770F
Copyright Information:© 2011 Royal Chemical Society.
Use License:This item is licensed under a Creative Commons Attribution-NonCommercial-Share Alike 3.0 License. View License
Funders:DCU Career Research Start Award 2008, Science Foundation Ireland (SFI) under grant 07/CE/I1147, Enterprise Ireland grant 07/RFP/MASF812
ID Code:16039
Deposited On:12 May 2011 15:49 by Andrew Kavanagh. Last Modified 07 Oct 2011 04:02

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