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A dual-emission polymer carbon nanoparticles for ratiometric and visual detection of pH value and bilirubin.
- Source :
-
Spectrochimica Acta Part A: Molecular & Biomolecular Spectroscopy . Feb2022:Part 2, Vol. 267, pN.PAG-N.PAG. 1p. - Publication Year :
- 2022
-
Abstract
- [Display omitted] • The dual emission polymer carbon nanoparticles PDA-OPD were synthesized. • The PDA-OPD exhibited dual emission peaks at 460 nm and 540 nm upon single excitation wavelength. • The PDA-OPD can be used for detection of pH value in the range from 3.0 to 7.4. • The PDA-OPD can be used for detection of bilibrubin in the alkaline environment. Herein, we prepared a novel fluorescent polymer carbon nanoparticles by polymerizing dopamine (DA) and o-phenylenediamine (OPD) through oxidation of hydrogen peroxide. In a neutral environment, the synthesized fluorescent polymer carbon nanoparticles (PDA-OPD) exhibited two emission peaks at 460 nm and 540 nm with 400 nm excitation wavelength. In an acidic environment, the fluorescence emission peaks of PDA-OPD at 540 nm showed an obvious fluorescence quenching, and there existed a good linear relationship between the fluorescence ratio F 540 /F 460 and environment pH value. In an alkaline environment, the fluorescence emission peak at 460 nm showed obvious fluorescence quenching after the addition of bilirubin, while a novel fluorescence emission peak at 560 nm emerged gradually. The PDA-OPD could be also used to detect bilirubin in the range of 0–400 μmol·L−1. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 13861425
- Volume :
- 267
- Database :
- Academic Search Index
- Journal :
- Spectrochimica Acta Part A: Molecular & Biomolecular Spectroscopy
- Publication Type :
- Academic Journal
- Accession number :
- 154050506
- Full Text :
- https://doi.org/10.1016/j.saa.2021.120513