Imidazolium-based ionic liquids as stabilizers for electrode modification with water-soluble porphyrin

Macarena García, Jessica Honores, Freddy Celis, Francesca Fuenzalida, Roxana Arce, María J. Aguirre, Andrés Aracena

Resultado de la investigación: Article

Resumen

The water-soluble porphyrin, known as 5,10,15,20-tetrakis(1-methyl-4-pyridyl)porphyrin (TMPyP), was successfully stabilized onto a carbon paste electrode (CP) by covering up the TMPyP-modified surface with a layer of ionic liquid (IL), particularly 1-butyl-3-methyl imidazolium hexafluorophosphate (BMim PF 6 ) or 1-butyl-3-methyl imidazolium bis(trifluoromethylsulfonyl)imide (BMim NTf 2 ). Noncovalent interactions established between TMPyP and ILs combined with the hydrophobicity of the latter yielded a new class of modified electrodes, denoted as CP/TMPyP/IL. These new systems exhibited higher electroactive areas as compared to those of CP and CP/IL electrodes, as well as a stable and reproducible electrochemical behavior in aqueous solutions. The obtained CP/TMPyP/BMim PF 6 and CP/TMPyP/BMim NTf 2 electrodes were used as electrochemical sensors for nitrite oxidation. The positive results showed that these electrodes can be considered as an alternative for nitrite detection in the concentration range under investigation.

Idioma originalEnglish
Páginas (desde-hasta)2338-2346
Número de páginas9
PublicaciónNew Journal of Chemistry
Volumen43
N.º5
DOI
EstadoPublished - 1 ene 2019

Huella dactilar

Ionic Liquids
Porphyrins
Ionic liquids
Ointments
Electrodes
Water
Carbon
Nitrites
Imides
Electrochemical sensors
Hydrophobicity

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Materials Chemistry

Citar esto

García, Macarena ; Honores, Jessica ; Celis, Freddy ; Fuenzalida, Francesca ; Arce, Roxana ; Aguirre, María J. ; Aracena, Andrés. / Imidazolium-based ionic liquids as stabilizers for electrode modification with water-soluble porphyrin. En: New Journal of Chemistry. 2019 ; Vol. 43, N.º 5. pp. 2338-2346.
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abstract = "The water-soluble porphyrin, known as 5,10,15,20-tetrakis(1-methyl-4-pyridyl)porphyrin (TMPyP), was successfully stabilized onto a carbon paste electrode (CP) by covering up the TMPyP-modified surface with a layer of ionic liquid (IL), particularly 1-butyl-3-methyl imidazolium hexafluorophosphate (BMim PF 6 ) or 1-butyl-3-methyl imidazolium bis(trifluoromethylsulfonyl)imide (BMim NTf 2 ). Noncovalent interactions established between TMPyP and ILs combined with the hydrophobicity of the latter yielded a new class of modified electrodes, denoted as CP/TMPyP/IL. These new systems exhibited higher electroactive areas as compared to those of CP and CP/IL electrodes, as well as a stable and reproducible electrochemical behavior in aqueous solutions. The obtained CP/TMPyP/BMim PF 6 and CP/TMPyP/BMim NTf 2 electrodes were used as electrochemical sensors for nitrite oxidation. The positive results showed that these electrodes can be considered as an alternative for nitrite detection in the concentration range under investigation.",
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García, M, Honores, J, Celis, F, Fuenzalida, F, Arce, R, Aguirre, MJ & Aracena, A 2019, 'Imidazolium-based ionic liquids as stabilizers for electrode modification with water-soluble porphyrin', New Journal of Chemistry, vol. 43, n.º 5, pp. 2338-2346. https://doi.org/10.1039/c8nj05455j

Imidazolium-based ionic liquids as stabilizers for electrode modification with water-soluble porphyrin. / García, Macarena; Honores, Jessica; Celis, Freddy; Fuenzalida, Francesca; Arce, Roxana; Aguirre, María J.; Aracena, Andrés.

En: New Journal of Chemistry, Vol. 43, N.º 5, 01.01.2019, p. 2338-2346.

Resultado de la investigación: Article

TY - JOUR

T1 - Imidazolium-based ionic liquids as stabilizers for electrode modification with water-soluble porphyrin

AU - García, Macarena

AU - Honores, Jessica

AU - Celis, Freddy

AU - Fuenzalida, Francesca

AU - Arce, Roxana

AU - Aguirre, María J.

AU - Aracena, Andrés

PY - 2019/1/1

Y1 - 2019/1/1

N2 - The water-soluble porphyrin, known as 5,10,15,20-tetrakis(1-methyl-4-pyridyl)porphyrin (TMPyP), was successfully stabilized onto a carbon paste electrode (CP) by covering up the TMPyP-modified surface with a layer of ionic liquid (IL), particularly 1-butyl-3-methyl imidazolium hexafluorophosphate (BMim PF 6 ) or 1-butyl-3-methyl imidazolium bis(trifluoromethylsulfonyl)imide (BMim NTf 2 ). Noncovalent interactions established between TMPyP and ILs combined with the hydrophobicity of the latter yielded a new class of modified electrodes, denoted as CP/TMPyP/IL. These new systems exhibited higher electroactive areas as compared to those of CP and CP/IL electrodes, as well as a stable and reproducible electrochemical behavior in aqueous solutions. The obtained CP/TMPyP/BMim PF 6 and CP/TMPyP/BMim NTf 2 electrodes were used as electrochemical sensors for nitrite oxidation. The positive results showed that these electrodes can be considered as an alternative for nitrite detection in the concentration range under investigation.

AB - The water-soluble porphyrin, known as 5,10,15,20-tetrakis(1-methyl-4-pyridyl)porphyrin (TMPyP), was successfully stabilized onto a carbon paste electrode (CP) by covering up the TMPyP-modified surface with a layer of ionic liquid (IL), particularly 1-butyl-3-methyl imidazolium hexafluorophosphate (BMim PF 6 ) or 1-butyl-3-methyl imidazolium bis(trifluoromethylsulfonyl)imide (BMim NTf 2 ). Noncovalent interactions established between TMPyP and ILs combined with the hydrophobicity of the latter yielded a new class of modified electrodes, denoted as CP/TMPyP/IL. These new systems exhibited higher electroactive areas as compared to those of CP and CP/IL electrodes, as well as a stable and reproducible electrochemical behavior in aqueous solutions. The obtained CP/TMPyP/BMim PF 6 and CP/TMPyP/BMim NTf 2 electrodes were used as electrochemical sensors for nitrite oxidation. The positive results showed that these electrodes can be considered as an alternative for nitrite detection in the concentration range under investigation.

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