Lab visit to the National High Magnetic Field Laboratory
Natalia Olejnik-Feher along with the co-supervisor of her thesis – Dr Daniel Lee from CEA Grenoble - have been awarded measurement time to use the world’s highest magnetic field magnet for NMR spectroscopy (at the NHMFL) in a grant-based proposal system, to assess the stability of the organic-inorganic interfaces of metal oxide nanocrystals. Being selected to carry out free-of-charge experiments on such unique equipment was indeed a great privilege. The trip followed assumed plan, which was to arrive a week before the measurements in ultra-high field (UHF), thus at 35 T, to get to know the facilities and prepare for main measurements - followed by a week long work in the UHF. The most important part of the trip was to investigate 17O-enriched, diphenyl phosphate coated, ZnO nanocrystals (DPP-ZnO NCs), derived from two contrasting synthesis approaches, enriched with NMR active oxygen isotope either on the synthesis stage or in post-synthetic procedure, using 17O NMR and if time allows also 67 Zn NMR. Initial analysis of the results showed structural differences between the oxygen and zinc environments between the two contrasting synthesis approaches. To extract further, detailed information from obtained dataset, more advanced analysis is needed, that will be done in the near future.
3-16 Aug., 2019
Tallahassee, FL, USA