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Published on: August 19, 2016
Electrospun glassy carbon ultra-thin layer chromatography devices
Jonathan E Clark1, Susan V Olesik
1The Ohio State University, Department of Chemistry, 120 West 18th Ave, Columbus, OH 43210, USA.
Journal of Chromatography. A
|June 18, 2010
Summary
Electrospun glassy carbon nanofibers offer tunable retention for ultra-thin layer chromatography (UTLC). These robust nanofiber stationary phases achieve high separation efficiency for dyes and amino acids.
Area of Science:
- Materials Science
- Analytical Chemistry
- Nanotechnology
Background:
- Ultra-thin layer chromatography (UTLC) requires advanced stationary phases for high-resolution separations.
- Electrospinning offers a versatile method for creating nanofiber-based materials.
Purpose of the Study:
- To develop and characterize electrospun glassy carbon nanofibers for UTLC applications.
- To evaluate the chromatographic performance of these novel stationary phases.
Main Methods:
- Electrospinning of SU-8 2100 photoresist followed by pyrolysis at various temperatures (600, 800, 1000 °C).
- Characterization using Raman spectroscopy and scanning electron microscopy (SEM).
- Chromatographic analysis of laser dyes and FITC-labeled amino acids on UTLC devices.
Main Results:
- Glassy carbon nanofibers (200-350 nm diameter) formed a 15 µm thick mat.
- UTLC devices exhibited tunable retention properties.
- High plate numbers (N > 10,000) and excellent resolution were achieved for dyes and amino acids.
- The nanofiber stationary phases demonstrated physical and chemical robustness.
Conclusions:
- Electrospun glassy carbon nanofibers are effective stationary phases for UTLC.
- These materials provide tunable retention and high separation efficiency.
- The developed UTLC devices show promise for various analytical applications due to their robustness.
