Abstract
Surface modified gold nanoparticles can be applied in various fields with increased chemical resistance. In this study, gold nanoparticles were treated with sugar molecules to improve chemical stability. Glucose known as a reducing sugar, sucrose or trehalose, which is non-reducing sugars, was added to a dispersion of gold nanoparticles synthesized with citrate as a reducing agent. The color and absorbance of the dispersion were evaluated for colloidal stability. As a result, there was no significant difference in the size, shape, and optical properties of gold nanoparticles depending on the type of sugar. After the addition of PBS, dispersion stability was evaluated and the aggregation reaction over time was analyzed. It was found, the gold nanoparticles coated with the non-reducing sugar were more stable than those with the reducing sugar. Higher molecular weight sugar prevented the particle agglomeration. Therefore, it is expected that gold nanoparticles coated with non-reducing sugar can be applied stably in high ionic condition.
| Translated title of the contribution | Study on Colloidal Stability of Gold Nanoparticles Modified with Sugar Molecules |
|---|---|
| Original language | Korean |
| Pages (from-to) | 68-73 |
| Number of pages | 6 |
| Journal | Polymer (Korea) |
| Volume | 46 |
| Issue number | 1 |
| DOIs | |
| State | Published - Jan 2022 |
Keywords
- Aggregation reaction
- Colloidal stability
- Gold nanoparticle
- Sugar molecules
- Surface modification