Hypochlorite fluorescence sensing by phenylboronic acid-alizarin adduct based carbon dots.
Talanta
; 208: 120447, 2020 Feb 01.
Article
em En
| MEDLINE
| ID: mdl-31816774
ABSTRACT
The selective fluorescence sensing of hypochlorite (ClO-) was achieved at pH 7.4 by a simple analytical procedure through the fluorescence quenching of autoclave synthesized carbon dots (CDs), which used as precursor an adduct formed between 3-aminophenylboronic acid (APBA) and alizarin red S (ARS). The use of this adduct allowed the preparation of CDs with a red shifted emission (560â¯nm) and excitation in the visible range (490â¯nm). Quantification of hypochlorite was achieved at physiological pH (pH 7.4) in aqueous solutions by fluorescence quenching with a linearity range of 0-200⯵M (limit of detection of 4.47⯵M, and limit of quantification of 13.41⯵M). The selectivity of hypochlorite sensing was confirmed by comparison with other potential analytes, such as glucose, fructose and hydrogen peroxide. Finally, the validity of the proposed assay was further demonstrated by performing recovery assays in different matrices. Thus, this CDs allows the fluorescent sensing of ClO- with spectral properties more suitable for in vitro/in vivo applications.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Ácidos Borônicos
/
Carbono
/
Antraquinonas
/
Ácido Hipocloroso
Idioma:
En
Ano de publicação:
2020
Tipo de documento:
Article