Hydrophobic and Rapid-Response Sensor Inks: Array-Based Fingerprinting of Perfumes

Area of Science:

• Analytical Chemistry
• Materials Science

Background:

• Counterfeit perfumes threaten market competition and consumer health.
• Accurate detection methods are needed to identify adulterated fragrances.

Purpose of the Study:

• To develop a novel sensor array for discriminating real perfumes from counterfeit ones.
• To enable rapid quality assurance in the cosmetics industry.

Main Methods:

• A 24-element solid-state colorimetric sensor array with chemo-responsive dye inks was designed.
• Sensor array performance was optimized via channel geometry and substrate modification.
• Chemometric methods (hierarchical clustering, principal component analysis) were used for data analysis.

Main Results:

• The sensor array achieved accurate discrimination of various fragrance bases and commercial perfumes.
• A unique color change profile was obtained within 2 minutes for fingerprinting samples.
• The sensor successfully identified ethanol-diluted fragrance bases, indicating potential for quality control.

Conclusions:

• The developed sensor array provides a robust and efficient method for detecting counterfeit perfumes.
• This technology offers a valuable tool for fast analysis and quality assurance of luxury goods and complex chemical products.