Two phosphorous (V) corrole complexes, [5,10,15-pentafluorophenyl corrole] phosphorous (V) (PFCorr) and [10-(4-trimethylsilylphenyl)-5,15-dimesityl-corrole] phosphorous (V) (PCorr) were synthesized and tested as nitrite-sensitive fluorophores. Fluorimetry studies on ligand sensitivity towards anions were carried out in solution, then inside polymeric membrane optodes deposited on glass, and finally by functionalized SiO2 nanoparticles deposited on a paper support. The selective fluorescence quenching was registered upon addition of an increasing amount of NO2− ions for both ligands. The influence on the PFCorr optode’s response of the lipophilic sites’ functionalization was investigated. The sensors’ suitability for nitrite assessment in natural waters at levels 10-fault lower than the WHO’s recommended maximum concentration level of 3 mg/L was demonstrated.

Caroleo, F., Diedenhofen, G., Catini, A., Di Natale, C., Paolesse, R., Lvova, L. (2022). Phosphorous (V) corrole fluorophores for nitrite assessment in environmental and biological samples. CHEMOSENSORS, 10(3) [10.3390/chemosensors10030107].

Phosphorous (V) corrole fluorophores for nitrite assessment in environmental and biological samples

Caroleo F.;Catini A.;Di Natale C.;Paolesse R.;Lvova L.
2022-01-01

Abstract

Two phosphorous (V) corrole complexes, [5,10,15-pentafluorophenyl corrole] phosphorous (V) (PFCorr) and [10-(4-trimethylsilylphenyl)-5,15-dimesityl-corrole] phosphorous (V) (PCorr) were synthesized and tested as nitrite-sensitive fluorophores. Fluorimetry studies on ligand sensitivity towards anions were carried out in solution, then inside polymeric membrane optodes deposited on glass, and finally by functionalized SiO2 nanoparticles deposited on a paper support. The selective fluorescence quenching was registered upon addition of an increasing amount of NO2− ions for both ligands. The influence on the PFCorr optode’s response of the lipophilic sites’ functionalization was investigated. The sensors’ suitability for nitrite assessment in natural waters at levels 10-fault lower than the WHO’s recommended maximum concentration level of 3 mg/L was demonstrated.
2022
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore ING-INF/01 - ELETTRONICA
English
Nitrite detection
Optical chemical sensor
Phosphorous corrole fluorophores
Silica nanoparticles
Caroleo, F., Diedenhofen, G., Catini, A., Di Natale, C., Paolesse, R., Lvova, L. (2022). Phosphorous (V) corrole fluorophores for nitrite assessment in environmental and biological samples. CHEMOSENSORS, 10(3) [10.3390/chemosensors10030107].
Caroleo, F; Diedenhofen, G; Catini, A; Di Natale, C; Paolesse, R; Lvova, L
Articolo su rivista
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/296019
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