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Carbon nanodots-based C-dips for rapid colorimetric detection of clinically important metal ions.
- Source :
- Kuwait Journal of Science; Jul2023, Vol. 50 Issue 3A, p18-29, 12p
- Publication Year :
- 2023
-
Abstract
- Owing to unique physical and optical properties, fluorescent carbon dots (C-dots) are used in various biomedical applications. In this study, C-dots have been integrated as sensing agent on paper surface for colorimetric determination of clinically important analytes. Polyacrylamidebased C-dots coated C-dips showed visible color change from white to brown for iron (Fe<superscript>2+</superscript>, Fe<superscript>3+</superscript>) sample. Moreover, iron and copper (Cu<superscript>2+</superscript>) samples showed significant quenching of C-dots under UV. Images captured with/without UV were analyzed to study the relationship between different iron and copper concentrations and colorimetric intensity values. Color intensity and fluorescence showed a linear relationship with concentrations of iron and copper (Range: 1×10<superscript>-4</superscript> to 1×10<superscript>-2</superscript> M, Linearity: R² = 0.94). LOD from the paper sensor showed a sensitivity of 3.89×10<superscript>-5</superscript> μM, 4.65×10-5 μM and 6.7×10<superscript>-5</superscript> μM for Fe<superscript>3+</superscript>, Fe<superscript>2+</superscript> and Cu<superscript>2+</superscript> respectively, reflecting its reliability as low-cost sensing solution to analyze clinically relevant analytes as reported in current study. [ABSTRACT FROM AUTHOR]
- Subjects :
- QUANTUM dots
METAL ions
IRON
OPTICAL properties
CARBON
Subjects
Details
- Language :
- English
- ISSN :
- 23074108
- Volume :
- 50
- Issue :
- 3A
- Database :
- Complementary Index
- Journal :
- Kuwait Journal of Science
- Publication Type :
- Academic Journal
- Accession number :
- 164806573
- Full Text :
- https://doi.org/10.48129/kjs.13997