ELECTROCHEMICAL OXIDATION OF 10H-PHENOTHIAZINE-1-CARBOXYLIC ACID

Ana-Maria SĂCARĂ; Castelia CRISTEA; Tamás LOVÁSZ; Dan Ioan  PORUMB; Éva  MOLNÁR

doi:10.24193/subbchem.2017.4.10

ELECTROCHEMICAL OXIDATION OF 10H-PHENOTHIAZINE-1-CARBOXYLIC ACID

Authors

Ana-Maria SĂCARĂ Department of Chemical Engineering, Faculty of Chemistry and Chemical Engineering, Babeş-Bolyai University, Cluj-Napoca, Romania. Corresponding author: limur@chem.ubbcluj.ro. https://orcid.org/0000-0002-9458-0805
Castelia CRISTEA Faculty of Chemistry and Chemical Engineering, “Babeș-Bolyai” University, Cluj-Napoca, Romania. Email: castelia.cristea@ubbcluj.ro. https://orcid.org/0000-0003-1138-2596
Tamás LOVÁSZ Department of Chemisty and Chemical Engineering in Hungarian Language, Faculty of Chemistry and Chemical Engineering, Babeş-Bolyai University, Cluj-Napoca, Romania. Email: tlovasz@chem.ubbcluj.ro. https://orcid.org/0000-0003-2923-7442
Dan Ioan PORUMB Babeş-Bolyai University, Faculty of Chemistry and Chemical Engineering, 11 Arany Janos str., RO-400028, Cluj-Napoca, Romania. ioan.porumb@ubbcluj.ro. https://orcid.org/0000-0001-6388-2686
Éva MOLNÁR Institute of Chemical and Process Engineering, Department of Chemical Engineering Science, University of Pannonia, Veszprém, Hungary. Email: molnare@almos.uni-pannon.hu.

DOI:

https://doi.org/10.24193/subbchem.2017.4.10

Keywords:

10H-phenothiazine-1-carboxylic acid, SWASV, intramolecular hydrogen bonds

Abstract

The electrochemical behavior of 10H-phenothiazine-1-carboxylic acid was investigated by square wave anodic stripping voltammetry (SWASV) at a glassy carbon electrode, which evidenced the first monoelectronic oxidation step at low potentials (around 0.25 V), slightly modulated by the nature of the solvent. The effect of three different solvents (acetonitrile, dimethyl sulfoxide and chloroform) on the strength of intramolecular hydrogen bonding associations was evidenced by DFT calculations. The computed electron density at the heterocyclic nitrogen atom appeared well correlated to the recorded oxidation potential. The possibility of using 10H-phenothiazine-1-carboxylic acid as potential mediator for electrochemical detection of Malachite Green was explored, but the phenothiazine derivative appeared not suitable for the detection of the dye.

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STUDIA UBB CHEMIA, Volume 62 (LXII), No. 4, Tome I, June 2017

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Published

2017-12-29

How to Cite

SĂCARĂ, A.-M., CRISTEA, C., LOVÁSZ, T., PORUMB, D. I. ., & MOLNÁR, Éva . (2017). ELECTROCHEMICAL OXIDATION OF 10H-PHENOTHIAZINE-1-CARBOXYLIC ACID. Studia Universitatis Babeș-Bolyai Chemia, 62(4, Tome I), 121–128. https://doi.org/10.24193/subbchem.2017.4.10