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Raman and IR Spectroelectrochemical Methods as Tools to Analyze Conjugated Organic Compounds
Published on: October 12, 2018
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Solvatochromic sensor array for the identification of common organic solvents
Jacqueline M Rankin1, Qifan Zhang, Maria K LaGasse
1Department of Chemistry, University of Illinois at Urbana-Champaign, 600 South Mathews Avenue, Urbana, Illinois 61801, USA. ksuslick@illinois.edu.
The Analyst
|February 24, 2015
Summary
This study developed a colorimetric sensor array using solvatochromic dyes to identify eleven common solvents. The array distinguishes solvents through chemical dye interactions and physical changes within the sensor spots.
Area of Science:
- Analytical Chemistry
- Materials Science
Background:
- Solvent identification is crucial in various chemical processes.
- Existing methods for solvent discrimination can be complex or time-consuming.
Purpose of the Study:
- To develop a novel colorimetric sensor array for rapid and effective solvent discrimination.
- To investigate the mechanisms underlying the sensor array's response.
Main Methods:
- Fabrication of a cross-reactive sensor array using solvatochromic dyes embedded in semi-liquid matrices.
- Exposure of the sensor array to eleven common solvents.
- Analysis of the multidimensional colorimetric response using imaging and data processing.
Main Results:
- Successful discrimination among eleven common solvents based on unique array responses.
- Demonstration that both chemical (analyte-dye interactions) and physical (spot blooming, refractive index changes) factors contribute to the response.
- The sensor array exhibits a robust and reproducible colorimetric output.
Conclusions:
- The developed colorimetric sensor array offers a promising tool for rapid solvent identification.
- The combination of chemical and physical interactions provides a rich signal for distinguishing solvents.
- This approach has potential applications in quality control, environmental monitoring, and chemical process analysis.
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