A Two-In-One Versatile Colorimetric Sensor for Cyanide Anion and Volatile Amines Based on 1‑Hydroxyanthraquinone with...

Area of Science:

• Organic Chemistry
• Analytical Chemistry
• Materials Science

Background:

• Anthraquinone derivatives are explored for sensing applications.
• Cyanide ions and volatile amines pose environmental and food safety concerns.
• Development of selective and sensitive optical molecular sensors is crucial.

Purpose of the Study:

• Synthesize novel 2-acyloxy derivatives of 1-hydroxyanthraquinone.
• Evaluate their potential as optical molecular sensors for cyanide ions.
• Investigate their applicability for detecting volatile amines.

Main Methods:

• Chemical synthesis of novel anthraquinone derivatives.
• Spectrophotometric analysis of dye-analyte interactions in MeCN-H2O mixtures.
• Fabrication and testing of polymer films incorporating the sensor dyes.

Main Results:

• Synthesized dyes showed selective interaction with cyanide ions via hydroxyl group ionization.
• Quantitative data on interaction efficiency and selectivity against other anions were obtained.
• Polymer films demonstrated visible color changes for cyanide detection (≥10 μM).
• Dyes successfully detected volatile amines, indicating potential for food spoilage monitoring.

Conclusions:

• Novel anthraquinone dyes function as effective optical molecular sensors for cyanide.
• The sensor platform is adaptable for detecting volatile amines, with applications in food safety.
• These findings highlight the potential of these dyes for real-time environmental and food quality monitoring.