1-Ethyl-3-methylimidazolium ethylsulfate/copper catalyst for the enhancement of glucose chemiluminescent detection: effects on light emission and enzyme activity.

doi:10.1021/ac9026725

Paper

1-Ethyl-3-methylimidazolium ethylsulfate/copper catalyst for the enhancement of glucose chemiluminescent detection: effects on light emission and enzyme activity.

Published Feb 17, 2010 · A. Santafé, B. Doumèche, L. Blum

Analytical chemistry

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34

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Abstract

The effect of the ionic liquid 1-ethyl-3-methylimidazolium ethylsulfate ([Emim][EtSO(4)]) on the copper-catalyzed luminol chemiluminescence (CL) is reported. A drastic light emission enhancement is observed, related to a strong interaction between Cu(2+) and the imidazolium ring. In these conditions, the CL reaction was able to produce light efficiently at pH as low as 6.5 (amplification factor: Intensity(+IL)/Intensity(-IL) = 2900). Interesting effects of [Emim][EtSO(4)] on the enzyme glucose oxidase activity were also evidenced, and advantages were taken from this enhancement to perform sensitive chemiluminescent glucose detection (LOD = 4 microM) at pH 8.0.

Study Snapshot

The ionic liquid 1-ethyl-3-methylimidazolium ethylsulfate enhances glucose chemiluminescent detection by enhancing light emission and enzyme activity, enabling sensitive detection at pH 8.0.

PopulationOlder adults (50-71 years)

Sample size24

MethodsObservational

OutcomesBody Mass Index projections

ResultsSocial networks mitigate obesity in older groups.

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Paper

1-Ethyl-3-methylimidazolium ethylsulfate/copper catalyst for the enhancement of glucose chemiluminescent detection: effects on light emission and enzyme activity.

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References

Citations

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