Ionic liquid-based miniature electrochemical sensors for the voltammetric determination of catecholamines

Chernyshov, Denis V.; Shvedene, N. V.; Antipova, Erika R.; Pletnev, I. V.

doi:10.1016/j.aca.2008.05.042

Cited by 86 publications

(55 citation statements)

References 23 publications

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“…Furthermore upon exposure [P 6,6,6,14 ][DCA] to an equimolar mixture of both ions a green colouration was observed due to the co-existence of the two coloured complexes, indicating simultaneous binding of both Co 2+ and Cu 2+ ions as seen in …”

Section: Initial Il Complexationmentioning

confidence: 98%

“…UV/VIS absorption data for the purified IL's were performed using a µQuant® plate well reader by adding 500 µL of metal salt solution (if used) to 500 µL of [P 6,6,6,14 ][DCA]. Vibrational spectra were obtained using a Perkin Elmer Spectrum GX FT-IR System® and Perkin Elmer Raman Station 400F®.…”

Section: Instrumentationmentioning

confidence: 99%

“…Both PVC and [P 6,6,6,14 ][DCA] (1:2 (w/w)) were added to 2 ml THF and stirred until dissolved. The resulting solution was then poured into a glass ring on a glass slide held together by rubber bands.…”

Section: Membrane Preparationmentioning

confidence: 99%

“…In order to examine the co-ordinating abilities of [P 6,6,6,14 ][DCA], we initially exposed the IL to aqueous solutions of Cu(NO 3 ) 2 and Co(NO 3 ) 2 independently. This resulted in a strong yellow coloration of the IL in the presence of Cu(NO 3 ) 2 , and a deep blue coloration in the case of Co(NO 3 ) 2 (after the removal of aqueous layer).…”

Section: Initial Il Complexationmentioning

confidence: 99%

“…In recent years, there has been a considerable effort to optimise ion selective electrodes (ISEs), particularly with respect to improving their limit of detection, and already, the use of ILs that combine the necessary plasticizing and ion-exchanging functions have led to a simplification of ISE membrane formulations [14][15][16][17][18] .…”

Section: Introductionmentioning

confidence: 99%

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

Kavanagh

Byrne

Diamond

et al. 2011

Analyst

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This work details the use of a 2-component optode membrane which is capable of generating three distinct colours in the presence of Cu 2+ and Co 2+ ions. It has been found that the ionic liquid (IL) trihexyltetradecylphosphonium dicyanamide [P 6,6,6,14 ][DCA] can act as plasticizer, ligand and transducer dye when used in poly(vinyl chloride) (PVC) membranes, which significantly simplifies the optode membrane cocktail. Upon exposure to an aqueous Cu 2+ solution, a yellow colour is generated within the membrane, while exposure to an aqueous Co 2+ solution generates a blue colour. Exposure to a solution containing both ions produces a green colour. Vibrational spectroscopy has been used to investigate the molecular basis of the IL-metal ion the 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.

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Section: Initial Il Complexationmentioning

confidence: 98%