A Widely Applicable Silver Sol for TLC Detection with Rich and Stable SERS Features

Area of Science:

• Analytical Chemistry
• Spectroscopy
• Materials Science

Background:

• Thin-layer chromatography (TLC) combined with surface-enhanced Raman spectroscopy (SERS) is widely used for complex systems.
• Detecting hydrophobic analytes with TLC-SERS presents challenges in specificity and ease of detection.

Purpose of the Study:

• To develop a SERS-active non-aqueous silver sol for improved TLC-SERS analysis.
• To enhance the detection of hydrophobic and hydrophilic analytes using TLC-SERS.

Main Methods:

• Rapid synthesis of a SERS-active non-aqueous silver sol using optimized silver nanoparticles (AgNPs) in dimethylformamide (DMF).
• Application of the AgNPs-DMF sol for TLC-SERS detection of various analytes.

Main Results:

• The non-aqueous silver sol activated analytes, producing rich and stable spectral features.
• The optimized AgNPs-DMF sol demonstrated superior SERS performance compared to traditional methods.
• Achieved high specificity, acceptable stability, and wide applicability for analyte detection.

Conclusions:

• The developed non-aqueous AgNPs-DMF sol is highly suitable for TLC-SERS.
• This advanced TLC-SERS method shows significant promise for applications in food safety, environmental monitoring, and medical diagnostics.