Functional potential of chitosan-metal nanostructures: Recent developments and applications

Area of Science:

• Biomaterials Science
• Nanotechnology
• Polymer Chemistry

Background:

• Chitosan (Cs) is a biocompatible, biodegradable biopolymer with limited solubility.
• Modifications like acylation, acetylation, and carboxymethylation enhance Cs solubility.
• Cs-based metal complexes and nanoparticles are a rapidly developing research area.

Purpose of the Study:

• To review Cs modification strategies for solubility enhancement.
• To examine synthesis methods for Cs-metal complexes and nanoparticles.
• To explore the applications and characterization of these advanced Cs materials.

Main Methods:

• Review of literature on Cs modification techniques (acylation, acetylation, carboxymethylation).
• Analysis of synthesis methodologies for Cs-metal complexes and nanoparticles, including ionic gelation and in-situ reduction.
• Compilation of characterization data using techniques like UV-Vis, FTIR, and SEM.

Main Results:

• Cs modifications significantly improve solubility.
• Chitosan-metal nanostructures exhibit enhanced antimicrobial efficacy against resistant bacteria.
• These nanocomposites improve targeted drug delivery and wastewater remediation (heavy metals, dyes).

Conclusions:

• Cs-metal nanocomposites offer superior functionality over standard Cs composites.
• These materials hold significant promise for applications in medicine, drug delivery, and environmental science.
• Advancements in Cs metal complexes contribute to cancer treatment, enhanced drug delivery, and infection prevention.