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Protein immobilisation on perpendicularly aligned gold tipped nanorod assemblies
Catriona O'Sullivan1, Suzanne Crilly, Fathima R Laffir
1Materials and Surface Science Institute (MSSI), University of Limerick, Limerick, Ireland.
Chemical Communications (Cambridge, England)
|January 12, 2011
Summary
Researchers developed a novel assembly with redox-active cytochrome c (cyt c) on gold-tipped semiconductor nanorods. This creates an ultra-high density array, confirming protein electroactivity for advanced biosensor applications.
Area of Science:
- Nanotechnology
- Biochemistry
- Electrochemistry
Background:
- Cytochrome c (cyt c) is a crucial redox protein involved in electron transport.
- Developing efficient immobilization strategies for electroactive proteins is vital for biosensor technology.
Purpose of the Study:
- To describe a multi-component assembly of cytochrome c immobilized onto semiconductor nanorods.
- To demonstrate the electroactivity of immobilized cytochrome c in a high-density array.
Main Methods:
- Fabrication of vertically aligned gold-tipped semiconductor nanorods.
- Immobilization of cytochrome c onto nanorods using a thiol linker.
- Electrochemical characterization to confirm protein electroactivity.
Main Results:
- Successful immobilization of cytochrome c onto the nanorod array.
- Demonstration of a clear faradaic response, indicating protein electroactivity.
- Formation of an ultra-high density array of electroactive cytochrome c.
Conclusions:
- The developed assembly provides a robust platform for immobilizing redox proteins.
- The study confirms the electroactivity of cytochrome c in a high-density nanorod array.
- This work has implications for the development of advanced electrochemical biosensors.
