A ratiometric fluorescent probe for hypochlorous acid determination: Excitation and the dual-emission wavelengths at NIR region.
Talanta
; 170: 496-501, 2017 Aug 01.
Article
en En
| MEDLINE
| ID: mdl-28501202
ABSTRACT
An interesting ratiometric fluorescent probe with unique optical performance was reported in this work. By modifying on the bridge-head of heptamethine cyanine chromophore with an N-phenyl-N'-ethylene amine thiourea substituent as a chemodosimetric recognition unit, the probe exhibited ratiometric fluorescent response towards hypochlorous acid (HClO). Upon addition of HClO, the absorbance spectra showed a great red shift as large as 150nm from 650nm to 800nm. Employing the isosbestic absorption point at 730nm as an excitation wavelength, a ratiometric fluorescent sensing mode with two long emission wavelengths at 760nm and 820nm was acquired, and thus the probe displayed significant behavior with both the excitation wavelength and the dual-emission wavelengths located at NIR (650-900nm) region exclusively. Also, the probe showed excellent performance in high sensitivity and good selectivity towards HClO over other reactive oxygen species and a wide variety of coexist species in biological pH condition and had been successfully used to detect hypochlorous acid in serum samples and tap water samples.
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1
Colección:
01-internacional
Banco de datos:
MEDLINE
Idioma:
En
Revista:
Talanta
Año:
2017
Tipo del documento:
Article
País de afiliación:
China