TY - JOUR

T1 - Interaction of amines with electrodes modified by polymeric complexes of Ni with salen-type ligands

AU - Vereshchagin, Anatoliy A.

AU - Sizov, Vladimir V.

AU - Verjuzhskij, Mikhail S.

AU - Hrom, Siarhei I.

AU - Volkov, Alexey I.

AU - Danilova, Julia S.

AU - Novozhilova, Maria V.

AU - Laaksonen, Aatto

AU - Levin, Oleg V.

N1 - Funding Information: The study of interaction between polymeric complexes of Ni and amines was supported by the Russian Foundation for Basic Research (grant # 15-33-20379 mol_a_ved). Synthesis of the polymeric complexes was financially supported by the Russian Science Foundation (grant # 16-13-00038 ). The calculations were performed on resources provided by the Swedish National Infrastructure for Computing (SNIC) in the National Supercomputer Center at Linköping University. The authors would like to thank the Computing Center, the Educational Resource Center of Chemistry, the Center for Chemical Analysis and Materials Research, and the Center for Magnetic Resonance of Research park of St.Petersburg State University. Publisher Copyright: © 2016 Elsevier Ltd Copyright: Copyright 2016 Elsevier B.V., All rights reserved.

PY - 2016/9/1

Y1 - 2016/9/1

N2 - Chemically modified electrodes based on complexes of transition metals with N,N′-ethylenebis(salicylimine) (salen) type ligands are reported to act as redox mediators due to axial coordination of exogeneous ligands to metal atom in oxidized form of complex. Thus such electrodes can be used as amperometric and voltammetric detectors of various compounds. However, effects of ligand structure and ligand-analyte specific interactions on the electrochemical response of said complexes have not been studied yet for organic analytes. In this article we demonstrate that some aromatic amines can interact with salen-type ligands by several routes, depending on the ligand and amine structure. It leads to the ligand polarization, and thus to the unique shape of voltammetric curves of chemically modified electrodes, based on polymeric salen complexes, immersed in amines solutions. Such feature allows using the electrodes as sensors for molecular recognition. The same electrodes can act as electron transfer catalysts of the amines oxidation, and may be applicable to the quantitative analysis of amines with the detection limit about 10 μmol l−1.

AB - Chemically modified electrodes based on complexes of transition metals with N,N′-ethylenebis(salicylimine) (salen) type ligands are reported to act as redox mediators due to axial coordination of exogeneous ligands to metal atom in oxidized form of complex. Thus such electrodes can be used as amperometric and voltammetric detectors of various compounds. However, effects of ligand structure and ligand-analyte specific interactions on the electrochemical response of said complexes have not been studied yet for organic analytes. In this article we demonstrate that some aromatic amines can interact with salen-type ligands by several routes, depending on the ligand and amine structure. It leads to the ligand polarization, and thus to the unique shape of voltammetric curves of chemically modified electrodes, based on polymeric salen complexes, immersed in amines solutions. Such feature allows using the electrodes as sensors for molecular recognition. The same electrodes can act as electron transfer catalysts of the amines oxidation, and may be applicable to the quantitative analysis of amines with the detection limit about 10 μmol l−1.

KW - benzylamine detection

KW - coordination of anmines

KW - electrooxidation of amines

KW - in-silico screening

KW - Salen complexes

UR - http://www.scopus.com/inward/record.url?scp=84976628344&partnerID=8YFLogxK

U2 - 10.1016/j.electacta.2016.06.087

DO - 10.1016/j.electacta.2016.06.087

M3 - Article

VL - 211

SP - 726

EP - 734

JO - Electrochimica Acta

JF - Electrochimica Acta

SN - 0013-4686

ER -