Photovoltaic cells as a highly efficient system for biomedical and electrochemical surface-enhanced Raman...

Area of Science:

• Nanomaterials
• Spectroscopy
• Electrochemistry

Background:

• Surface-enhanced Raman scattering (SERS) is a sensitive, label-free technique for chemical analysis.
• Integrating SERS with electrochemistry allows for in situ studies of molecular changes and reaction intermediates.

Purpose of the Study:

• To develop a novel SERS substrate for ultra-trace analysis, microorganism detection, and spectroelectrochemical measurements.
• To create a conductive SERS platform based on silver-coated photovoltaic materials (Ag/PV).

Main Methods:

• Fabrication of a conductive SERS platform using photovoltaic materials coated with silver (Ag/PV).
• Application of the Ag/PV substrate for label-free identification of cancer cells (renal carcinoma) and bacteria (E. coli, B. subtilis).
• Utilizing the Ag/PV platform as a working electrode for spectroelectrochemical studies of p-aminothiophenol (p-ATP).

Main Results:

• The Ag/PV substrates exhibited high sensitivity, reproducibility, specificity, and stability.
• Successful label-free differentiation of cancer cells and bacterial pathogens.
• Real-time monitoring of electrochemical changes during p-ATP studies using the spectroelectrochemical approach.

Conclusions:

• The novel Ag/PV SERS substrate is versatile for ultra-trace analysis, biological sample identification, and electrochemical studies.
• The integration of SERS and electrochemistry on this platform offers powerful in situ analytical capabilities.
• This technology has significant potential for expanding SERS applications in various scientific fields.