Nitrogen-doped carbon dot threads as a "turn-off" fluorescent probe for permanganate ions and its hydrogel hybrid as a naked eye sensor for gold(III) ions
- Title
- Nitrogen-doped carbon dot threads as a "turn-off" fluorescent probe for permanganate ions and its hydrogel hybrid as a naked eye sensor for gold(III) ions
- Author
- 손대원
- Keywords
- Carbon dot threads; Carbon dot hydrogel hybrid; Fluorescent probe; Naked eye detection; Ion sensing; Fluorescent ink
- Issue Date
- 2020-05
- Publisher
- SPRINGER HEIDELBERG
- Citation
- ANALYTICAL AND BIOANALYTICAL CHEMISTRY, v. 412, no. 12, page. 2993-3003
- Abstract
- Highly fluorescent nitrogen-doped carbon dot (NCD) threads were synthesized via simple pyrolysis of citric acid, p-hydroxybenzoic acid, and ammonia. The NCDs show excitation-independent behavior with maximum excitation and emission wavelengths of 350 nm and 435 nm, respectively. The developed probe was used as a turn-off fluorescent sensor for the selective and sensitive determination of permanganate ions in aqueous media. The probe's hydrogel hybrid displayed a beautiful purple color demonstrating its potential as a naked eye sensor for gold detection. The ratiometric sensor exhibited excellent selectivity towards permanganate ions over 27 other ions with a linear range of 510 nM to 2 mu M, a detection limit of 170 nM, and a linear regression value (R-2) of 0.9944. Similarly, the linear range and limit of detection for gold ions was 3.89-20 mu M and 1.285 mu M, respectively. The synthesized NCDs were also used as a fluorescent ink as well as a naked eye marker in association with a gold solution demonstrating its potential forensic and anti-counterfeiting applications.
- URI
- https://link.springer.com/article/10.1007%2Fs00216-020-02550-7https://repository.hanyang.ac.kr/handle/20.500.11754/166688
- ISSN
- 1618-2642; 1618-2650
- DOI
- 10.1007/s00216-020-02550-7
- Appears in Collections:
- COLLEGE OF NATURAL SCIENCES[S](자연과학대학) > CHEMISTRY(화학과) > Articles
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