New poly(ether-phosphoramide)s sulfides based on green resources as sensitive films for the specific impedimetric detection of nickel ions
Creators
- 1. National Institute of Research and Physicochemical Analysis (INRAP), Biotechnopole of Sidi Thabet, 2020, Ariana, Tunisia
- 2. University of Lyon, Institute of Analytical Sciences, UMR 5280, 5 Rue de la Doua, 69100, Villeurbanne, France
- 3. University of Lyon, Institute of Polymer Materials, UMR 5223, 5 Rue V. Grignard, 69622, Villeurbanne Cedex, France
- 4. BAM, Federal Institute of Material Research and Testing, Richard Willst¨atter Str. 11, D-12489, Berlin, Germany
Description
For the development of selective and sensitive chemical sensors, we have developed a new family of poly(etherphosphoramide) polymers. These polymers were obtained with satisfactory yields by nucleophilic aromatic polycondensation using isosorbide as green resources, and bisphenol A with two novel difluoro phosphinothioic amide monomers. Unprecedented, the thiophosphorylated aminoheterocycles monomers, functionalized with two heterocyclic amine, N-methylpiperazine and morpholine were successfully obtained by nucleophilic substitution reaction of P(S)–Cl compound. The resulting polymers were characterized by different analytical techniques (NMR, MALDI–ToF MS, GPC, DSC, and ATG). The resulting partially green polymers, having tertiary phosphine sulfide with P–N side chain functionalities along the main chain of polymers are the sensitive film at the surface of a gold electrode for the impedimetric detection of Cd, Ni, Pb and Hg. The bio-based poly(etherphosphoramide) functionalized with N-methylpiperazine modified sensor showed better analytical performance than petrochemical based polymers for the detection of Ni2+. A detection limit of 50 pM was obtained which is very low compared to the previously published electrochemical sensors for nickel detection
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Talanta 2022 (1).pdf
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