GENERAL NUCLEAR MAGNETIC RESONANCE OF THE UPV/EHU

The NMR Service provides users with a wide variety of NMR experiments carried out in different magnetic fields, ranging from 300 to 500 MHz, with the collaboration of its technical personnel.

All requests and enquiries are treated with the utmost confidentiality.

The results obtained using NMR techniques may be complemented by other analytical techniques available at the Advanced Research Facilities (SGIker) of the UPV/EHU, university departments and technology centres, etc.

The results obtained from the experiments carried out by users on a self-service basis or via ordinary service are uploaded on the NMR server and may be collected via ftp by those interested parties.

Users of the service under contract may, in addition to in electronic format, request printed spectra via fax or ordinary post. The corresponding reports can also be drafted by prior request in which the results obtained are interpreted.

In the case of standard experiments (1H, 13 C) and except in cases of force majeure, results can be made available within a period of 48 hours from the time of receipt of the samples and instructions. The possibility also exists of replying faster, according to certain needs.

Facilities:

By way of a prior step to the provision of the services indicated, enquiries may be made without any commitment as regards the most suitable experiments or possibilities available for dealing with the problems raised.

1. Acquiring NMR spectra from different nuclei, including 1H, 19F, 13C, 31P, 15N , 29Si , 27Al, 113Cd, etc. of liquid samples, solutions and gels, with simultaneous observation of two or three channels and with gradients on Z axis.
2. Solid spectra are acquired using the CPMAS spectra (Cross Polarization Magical Angle Spinning ) a variable temperature with a sample rotation speed of approximately 10,000 Hz. The nuclei that can be observed with the probe available are, among others, 13C, 27Al, 29Si and 31P.
3. Reports on the results obtained (on a request basis).
4. Allocation of spectra (on a request basis).
5. Advice in the field of application involving the NMR technique.
6. Implementation, development of NMR methods and experiments for researchers from the UPV/EHU and technology centres.

The technical features of the spectrometers, probes and software available may be consulted in the equipment section. The person in charge of the NMR Service should be consulted if more detailed information is required regarding facilities and the possibilities offered by the equipment.

Applications:

NMR can be used in a wide variety of industrial applications, ranging from the identification of unknown products to the monitoring of quality control processes, the study of catalysis, and allocation / confirmation of end products. It is possible to study a large number of organic and inorganic (non-ferrous) products via NMR in solution, its only being necessary for the material to be soluble in some deutered solvent. Some of the applications are listed below:

1. Structural identification .
2. Confirmation of structures.
3. Identification of composites.
4. Composition of samples.
5. Molecular mobility: determination of conformations in solution.
6. Monitoring of process , kinetics.
7. Polymorphism studies .
8. Determination of association processes.
9. High and low temperature studies .
10. Determination of enantiomeric excess.

One of the advantages of the technique is its non-destructive nature, which means that the sample can be recovered if required.