Modified Diamide and Phosphine Oxide Extracting Compounds As Membrane Components for Cross-Sensitive Chemical Sensors

Khaydukova, Maria; Wilden, Andreas; Kirsanov, Dmitry; Babain, Vasily; Karnaukh, Mikhail; Selucký, Pavel; Legin, Andrey; Militsyn, Danila; Grüner, Bohumir

doi:10.3390/chemosensors7030041

Journal Article

FZJ-2019-04374

Modified Diamide and Phosphine Oxide Extracting Compounds As Membrane Components for Cross-Sensitive Chemical Sensors

Khaydukova, M. (Corresponding author) ; Militsyn, D. ; Karnaukh, M. ; Grüner, B. ; Selucký, P. ; Babain, V. ; Wilden, A.FZJ* ; Kirsanov, D. ; Legin, A.

2019
MDPI Basel

Chemosensors 7(3), 41 (2019) [10.3390/chemosensors7030041]

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Please use a persistent id in citations: http://hdl.handle.net/2128/23435 doi:10.3390/chemosensors7030041

Abstract: This research is devoted to the development and study of novel cross-sensitive sensors based on modified extracting ligands. According to the previous results of liquid extraction studies, chemical modification of membrane active components would change analytical characteristics of a sensor comprising them. The sensing elements of the studied sensors consisted of various derivatives of N,N,N’,N’-tetraoctyldiamide of diglycolic acid (TODGA) and di-phenyl-N,N-di-i-sobutylcarbamoylmethylen phoshine oxide (CMPO) used as neutral carriers, CCD (chlorinated cobalt dicarbollide) as a lipophilic additive, different plasticizers, and poly(vinyl chloride) (PVC) as a polymer. TODGA-based sensors demonstrated stable and reproducible response towards rare earth cations in acidic media (pH=2). Changing concentrations and ratio of neutral carriers and lipophilic additive, it is possible to modify the sensitivity and selectivity of the sensors towards the same target ions. Bonded ligands, such as cobalt dicarbollide covalently attached to TODGA and CMPO, exhibited lower selectivity and sensitivity to rare earth cations. A possibility to vary cross-sensitivity patterns of the sensors in a wide range might be of great interest for the development of multisensor systems allowing simultaneous determination of several analytes in multicomponent solutions.

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