Department of Physical Chemistry, University of Debrecen, Hungary
István Bányai(1), Mónika Kéri(1), Dávid Nyul(2) & Levente Novák(1)
Nuclear Magnetic Resonance is the everyday tool for chemists, bio-chemists and physicists even if that the price of helium (for superconducting magnets) increased more than ten times in the last couple of years. In case of nanoscience NMR is in general, not more than a tool for identification of starting compounds and the resulted organic nanoparticles if those are not too big. In this presentation we will show that NMR can do more for researchers who deal with nanotechnology.
Beyond the usual 2D correlation (homo and hetero nuclear through bond and through space correlations) techniques we intend to show how other nuclei than 1H or 13C can provide important information about nanoparticles. Another attractive feature of NMR is the relatively slow relaxation. It makes possible to study the translation and rotation movement of particles or the medium.
The NMR cryoporometry allows to study the microporous materials under the circumstances of their application that is in the presence of liquid. Beyond the usual pore size determination NMR cryoporometry reveals the change in the morphology of porous systems by immersing them into liquids. The mobility of the liquid in and between the pores can be revealed with completion of NMR diffusometry. Finally, we will show that low-field (TD-) NMR can substitute the high field NMR for determination of pore size of porous materials. The in vivo study of human skin is also possible by using single side magnets by means of relaxometry.
The most important NMR applications will be presented through real case studies rather than showing deep physical and instrumental details. Some possible instrumental pitfalls will shortly be discussed.
Acknowledgments: This research supported by National Research, Development and Innovation Office (NKFIH. The grant number is NKFIH K 131989.
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