Solvent-modulated luminescence of carbon dots for ion sensing and fingerprint detection.
Opt Express
; 32(7): 12394-12404, 2024 Mar 25.
Article
em En
| MEDLINE
| ID: mdl-38571062
ABSTRACT
Since carbon dots (CDs) with good water solubility are preferred by researchers and biological applications, a hydrothermal method was used to synthesize green fluorescent CDs with an excitation-independent peak at 526â
nm using deionized water as the solvent and neutral red as the carbon source. To achieve spectral modulation, the pH of the solvent was adjusted with KOH to obtain orange CDs (O-CDs) in an alkaline environment, with the emission peak red-shifted to 630â
nm. The water-soluble CDs were prepared for multidimension sensing as Fe3+ sensing (on/off). Carbon dots dispersed into a silica gel matrix can be used for fingerprint detection of various materials.
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MEDLINE
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En
Ano de publicação:
2024
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Article