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Light-mediated Formation and Patterning of Hydrogels for Cell Culture Applications
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Simple Sol-Gel Protein Stabilization toward Rainbow and White Lighting Devices.

David Gutiérrez-Armayor1, Youssef Atoini1, Daniel Van Opdenbosch2

  • 1Chair of Biogenic Functional Materials, Technical University of Munich, Campus Straubing for Biotechnology and Sustainability, Schulgasse, 22, 94315, Straubing, Germany.

Advanced Materials (Deerfield Beach, Fla.)
|April 10, 2024
PubMed
Summary
This summary is machine-generated.

Stabilizing fluorescent proteins (FPs) is key for sustainable photonics. This study presents a simplified, one-pot sol-gel method for creating stable FP@SiO2 nanoparticles, enhancing protein lighting applications.

Keywords:
fluorescent protein coatingshybrid silica nanoparticlesprotein lighting devicesprotein stabilizationsol‐gel methodology

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Area of Science:

  • Materials Science
  • Biotechnology
  • Nanotechnology

Background:

  • Fluorescent proteins (FPs) are promising sustainable materials for photonics and optoelectronics.
  • Stabilizing FPs for non-physiological environments and harsh conditions remains a significant challenge.
  • Traditional sol-gel methods for FP stabilization are often complex, harsh, and less versatile.

Purpose of the Study:

  • To develop a simplified, versatile, and effective method for stabilizing fluorescent proteins (FPs) using sol-gel chemistry.
  • To create stable, mesoporous FP@SiO2 nanoparticles with preserved photoluminescence.
  • To demonstrate the application of these stabilized FPs in bio-hybrid light-emitting diodes.

Main Methods:

  • A one-pot, surfactant-free sol-gel method in aqueous media (PBS, pH 7.4) was employed.
  • Direct reaction between FP carboxylic groups and silica precursors formed FP@SiO2 nanoparticles.
  • FP@SiO2 nanoparticles were synthesized as single-emissive (green/red) and dual-emissive components.

Main Results:

  • Mesoporous FP@SiO2 nanoparticles were successfully synthesized with controlled sizes.
  • The photoluminescence of FPs was unaffected, and enhanced stability (>6 months) was achieved under dry storage and in organic solvents.
  • FP@SiO2 color filters in bio-hybrid LEDs showed up to 15-fold enhanced stability without reduced luminous efficacy.

Conclusions:

  • A facile and versatile sol-gel method enables the creation of highly stable FP@SiO2 nanoparticles.
  • This approach overcomes limitations of traditional methods, offering a sustainable pathway for protein-based lighting.
  • The developed FP@SiO2 nanoparticles show great potential for advanced optoelectronic applications.