A phenolphthalein-based fluorescent probe for the sequential sensing of Al3+ and F- ions in aqueous medium and live cells.
Spectrochim Acta A Mol Biomol Spectrosc
; 208: 131-139, 2019 Feb 05.
Article
em En
| MEDLINE
| ID: mdl-30308397
ABSTRACT
A novel fluorescent probe, phenolphthaleindialdehyde(2pyridyl) hydrazone (L), for sequentially detecting Al3+ and F- in almost 100% aqueous medium was successfully designed and synthesized. The probe offers two binding pockets for Al3+ to form a 1 2 ligand/metal complex, leading to a significant fluorescence enhancement at 465â¯nm. Further, the in-situ formed L-Al complex acts as a secondary fluorescent chemosensor for F- by quenching the fluorescence of the complex with high selectivity. The detection limit for Al3+ and F- sensing is 2.28â¯nM and 0.13⯵M, respectively, which are far below the World Health Organization (WHO) acceptable limits (7.41⯵M for Al3+ ion and 79⯵M for F-) in drinking water. The probe L was successfully applied to the detection of Al3+ and F- in cells using fluorescence microscopy.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Água
/
Fenolftaleína
/
Alumínio
/
Corantes Fluorescentes
/
Fluoretos
Limite:
Humans
Idioma:
En
Ano de publicação:
2019
Tipo de documento:
Article