Sensors Based on Metal Nanoclusters Stabilized on Designed Proteins.
Antonio Aires1, Elena Lopez-Martinez2, Aitziber L Cortajarena3,4
1CIC biomaGUNE, Parque Tecnológico de San Sebastián, Paseo Miramón 182, 20014 San Sebastián, Spain. aaires@cicbiomagune.es.
Biosensors
|November 18, 2018
Summary
Protein scaffolds enable the creation of novel metal nanoclusters (NCs) for sensing applications. These protein-metal NC hybrids show promise as sensors for temperature, metal ions, and reactive oxygen species (ROS).
Area of Science:
- Materials Science
- Nanotechnology
- Biotechnology
Background:
- Metal nanoclusters (NCs) exhibit unique optical properties, driving interest in their applications.
- Metal NCs are increasingly utilized as sensors for diverse analytes.
- Developing systematic approaches and new systems for NC-based sensing is crucial for industrial advancement.
Purpose of the Study:
- To explore the potential of repeat protein scaffolds as versatile templates for synthesizing and stabilizing metal NCs.
- To evaluate the sensing capabilities of protein-metal NC hybrids for various stimuli.
- To investigate the specific sensing responses of gold (Au), silver (Ag), and copper (Cu) NCs.
Main Methods:
- Synthesis and stabilization of various metal NCs (Au, Ag, Cu) using repeat protein scaffolds.
- Fabrication of protein-metal NC hybrids.
- Evaluation of protein-metal NC hybrids as sensors for temperature, metal ions, and reactive oxygen species (ROS).
Main Results:
- All three protein-metal NCs demonstrated effective performance as temperature sensors.
- Gold nanoclusters (AuNCs) specifically responded to the presence of metal ions.
- Silver nanoclusters (AgNCs) exhibited the ability to detect reactive oxygen species (ROS).
Conclusions:
- Repeat protein scaffolds serve as effective templates for creating functional metal NCs.
- Protein-metal NC hybrids offer versatile sensing capabilities for different analytes.
- This study highlights the potential of tailored protein-metal NCs for specific sensing applications in industry.
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