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Polysaccharide-based polyelectrolytes hollow microcapsules constructed by layer-by-layer technique.

Yifeng Zhang1, Cong Chen, Jianguo Wang

  • 1Department of Chemistry, Wuhan University, Wuhan 430072, China.

Carbohydrate Polymers
|June 18, 2013
PubMed
Summary
This summary is machine-generated.

Researchers synthesized novel carboxymethylated and quarternized glucans (CMGP and QGP) from Ganoderma lucidum. These biocompatible polymers were used to create precisely sized hollow microspheres via layer-by-layer assembly, offering controlled dimensions.

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Area of Science:

  • Biomaterials Science
  • Polymer Chemistry
  • Nanotechnology

Background:

  • Water-insoluble polysaccharides from Ganoderma lucidum are challenging to utilize directly.
  • Developing novel biocompatible materials for controlled structure fabrication is crucial in nanotechnology.
  • Polysaccharide derivatives offer tunable properties for advanced applications.

Purpose of the Study:

  • To synthesize novel water-soluble polysaccharide derivatives, carboxymethylated glucan (CMGP) and quarternized glucan (QGP), from Ganoderma lucidum.
  • To develop a facile method for constructing hollow microspheres using these novel polysaccharides.
  • To investigate the structural characteristics and assembly regularity of the fabricated multilayered microspheres.

Main Methods:

  • Synthesis of CMGP and QGP from Ganoderma lucidum polysaccharides.
  • Electrostatic layer-by-layer (LbL) deposition of CMGP/QGP onto ZnO colloidal templates.
  • Core template removal using an acid solution to yield hollow microspheres.
  • Characterization using transmission electron microscopy (TEM), zeta potential, and dynamic light scattering (DLS).

Main Results:

  • Successful synthesis of water-soluble CMGP and QGP.
  • Regular increase in multilayer thickness (48-145 nm) with increasing layer number (2-7) during LbL assembly.
  • Consistent mean thickness increment of approximately 25 nm per layer, indicating high assembly regularity.
  • Demonstration of controlled hollow microsphere fabrication with tunable dimensions.

Conclusions:

  • A straightforward method for creating hollow microspheres with controlled dimensions using CMGP and QGP was established.
  • The synthesized polysaccharide derivatives exhibit excellent biocompatibility and regularity in LbL assembly.
  • This approach offers a promising route for developing advanced biocompatible nanomaterials.