Rim-differentiated pillar[5]arene-modified surfaces for rapid PFOA/PFOS detection
Tu-Nan Gao1, Zhen Yang1,2, Jesse M S Goed1,3
1Laboratory of Organic Chemistry, Wageningen University, Stippeneng 4, 6708WE Wageningen, The Netherlands. fedor.miloserdov@wur.nl.
Chemical Communications (Cambridge, England)
|August 20, 2024
Summary
A novel sensor using rim-differentiated pillar[5]arene on alumina rapidly detects perfluoroalkyl acids like PFOS and PFOA. This method offers sensitive detection down to 10 ng L⁻¹, aiding environmental monitoring efforts.
Area of Science:
- Environmental Chemistry
- Materials Science
- Analytical Chemistry
Background:
- Perfluoroalkyl acids (PFAS) are persistent environmental pollutants.
- Sensitive detection methods for PFAS are crucial for environmental monitoring.
- Existing methods can be complex and time-consuming.
Purpose of the Study:
- To develop a novel material for rapid PFAS detection.
- To immobilize a rim-differentiated pillar[5]arene (RD-P5) onto an alumina surface.
- To establish a sensitive and efficient method for measuring specific PFAS.
Main Methods:
- Synthesis and characterization of rim-differentiated pillar[5]arene (RD-P5).
- Immobilization of RD-P5 onto an Al2O3 surface, creating P5-Al2O3.
- Detection of perfluorooctane sulfonic acid (PFOS) and perfluorooctanoic acid (PFOA) using contact angle measurements.
Main Results:
- Successful synthesis and immobilization of RD-P5 onto Al2O3.
- The P5-Al2O3 surface demonstrated rapid detection capabilities for PFOS and PFOA.
- Achieved limits of detection as low as 10 ng L⁻¹ for these PFAS.
Conclusions:
- The P5-Al2O3 surface represents a promising new platform for PFAS sensing.
- Contact angle measurements offer a rapid and sensitive approach for PFAS detection.
- This technology can contribute to improved environmental monitoring of persistent organic pollutants.
