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Combinatorial Synthesis of and High-throughput Protein Release from Polymer Film and Nanoparticle Libraries
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A functional protein retention and release multilayer with high stability.

Kun Nie1, Qi An1, Yihe Zhang1

  • 1Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Beijing, 100083, China. an@cugb.edu.cn zyh@cugb.edu.cn.

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This study presents a novel strategy for retaining proteins at interfaces using silica nanoparticles within multilayers. This method preserves protein function for applications in catalysis and smart devices, enabling robust and reusable interfaces.

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Area of Science:

  • Materials Science
  • Biotechnology
  • Nanotechnology

Background:

  • Effective interfacial protein retention is crucial for developing protein-based functional interfaces.
  • Challenges exist due to the sensitive nature of proteins, limiting applications in catalysis, medical therapy, antifouling, and smart devices.

Purpose of the Study:

  • To develop a general and robust strategy for spatial-temporally confining various proteins at interfacial regions.
  • To demonstrate the preservation of protein catalytic capabilities and the reusability of the fabricated interfaces.

Main Methods:

  • Proteins were encapsulated within mesoporous silica nanoparticles.
  • These nanoparticles were embedded in covalently woven multilayers.
  • The spatiotemporal retention was controlled by adjusting the number of capping layers.

Main Results:

  • The strategy successfully retained various proteins at interfaces, preserving their catalytic functions.
  • The multilayer structure proved robust against vigorous reactions, allowing for repeated use.
  • Protein-loaded interfaces were utilized for catalysis and as power-generating units for macroscopic devices.

Conclusions:

  • A versatile protein retention strategy using silica nanoparticles in multilayers was established.
  • This method offers robust, reusable, and functional protein-based interfaces for diverse applications.
  • The developed interfaces show potential in catalysis and as self-powered devices.