Fluorescent hydrogel waveguide for on-site detection of heavy metal ions.
Jingjing GuoMinjuan ZhouChangxi YangPublished in: Scientific reports (2017)
Hydrogels have great applications in tissue engineering and drug delivery. Recently, there have been intense interests in developments and applications of nanocomposite hydrogels by incorporating nanomaterials into polymer matrix, which endows the hydrogels with new functionalities. Here, we report on the first carbon dots (CDs) doped hydrogel waveguide for selective, on-site detection of heavy metal ions in aqueous solutions. The CDs-doped hydrogel waveguide exhibits efficient light confinement in water due to the refractive index contrast. The smooth waveguide surfaces lead to low light scattering loss. Real-time spectra measurement of the CDs-doped hydrogel waveguide with a compact interrogation setup demonstrates that the novel design can be used as a portable, robust sensing platform for on-site analysis and assessment of heavy metal ions.
Keyphrases
- quantum dots
- tissue engineering
- heavy metals
- drug delivery
- sensitive detection
- hyaluronic acid
- risk assessment
- health risk assessment
- health risk
- loop mediated isothermal amplification
- cancer therapy
- drug release
- magnetic resonance
- sewage sludge
- wound healing
- real time pcr
- label free
- high throughput
- magnetic resonance imaging
- density functional theory
- drinking water
- escherichia coli
- pseudomonas aeruginosa
- low cost
- contrast enhanced