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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
