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A practical tutorial to set up NMR diffusometry equipment: application to liquid crystals
1Dipartimento di Chimica e Chimica Industriale, via Risorgimento 35, 56126, Pisa, Italy.
Magnetic Resonance in Chemistry : MRC
|July 22, 2014
Summary
This study introduces stray field diffusometry, an alternative NMR method. It uses existing magnetic fringe fields to study molecular diffusion in challenging materials like liquid crystals and polymer melts.
Area of Science:
- Physics
- Materials Science
- Chemistry
Background:
- Nuclear Magnetic Resonance (NMR) diffusometry is a standard technique for studying molecular motion in fluids.
- Conventional methods rely on pulsed field gradients and specialized NMR hardware.
- Investigating fast-relaxing or slow-diffusing systems presents challenges for standard NMR diffusometry.
Purpose of the Study:
- To present an alternative NMR diffusometry setup.
- To utilize the static gradient in the fringe field of superconducting magnets.
- To enable the study of diffusion in challenging material systems.
Main Methods:
- Exploitation of the static magnetic field gradient present in the fringe field of commercial superconducting magnets.
- Development of a stray field diffusometry technique.
- Application to systems with fast relaxation times and slow diffusion.
Main Results:
- Demonstration of an alternative approach to NMR diffusometry.
- Successful application of stray field diffusometry.
- Potential for studying challenging systems like liquid crystals, ionic liquids, and polymer melts.
Conclusions:
- Stray field diffusometry offers a viable alternative to standard NMR diffusometry.
- This technique expands the applicability of NMR diffusion measurements to challenging material systems.
- The method leverages existing hardware, making it potentially more accessible.
