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Chitosan as a capping agent: Insights on the stabilization of gold nanoparticles
- Franconetti, Antonio, Carnerero, Jose M., Prado-Gotor, Rafael, Cabrera-Escribano, Francisca, Jaime, Carlos
- Carbohydrate polymers 2019 v.207 pp. 806-814
- chitosan, models, molecular dynamics, nanogold, nanoparticles, pH
- A theoretical method based on Dissipative Particle Dynamics (DPD) was applied for the study of the interaction between coarse-grained models of chitosan and gold nanoparticles. These models were used to understand the role of chitosan in the stabilization of gold nanoparticles (5 and 7 nm). In addition, this stabilization was also supported by synthesized and characterized chitosan-gold nanoparticles comparing their stabilities with typical citrate-gold nanoparticles.Finally, the role of chitosan as a capping agent through the steric and electrosteric mechanisms in aqueous media with different pH values was also evaluated.