For further information, please contact Prof. Mattias Edén.


New Solid State NMR Methodology 

We design magic-angle spinning (MAS) solid state NMR techniques for obtaining information about internuclear proximities and distances (up to ~1 nm), specifically targeting half-integer spin quadrupolar nuclei (e.g., 27Al, 23Na, 11B,17O) in structurally disordered inorganic materials. Part of our work involves theoretical NMR developments for improving the insight of nuclear spin dynamics during application of magic-angle spinning (MAS) and radio-frequency pulses. This is subsequently used for devising new solid state NMR methodology (primarily in the context of multidimensional NMR experiments), which we test out by computer simulations and NMR experiments on model systems.

Structural Studies by NMR and Computer Modeling

We exploit the element- and site-specific character of solid state NMR for probing the local structures of ceramics, minerals, oxide- and oxynitride glasses. This involves, for instance, to determine the coordination state and to identify the neighboring atoms around a given site in the structure. We also study the intermediate-range order in glasses, aiming at determining how the basic building blocks are connected in the networks. The experimental NMR data are evaluated in conjunction with results from atomistic molecular dynamics (MD) simulations.
Ongoing projects include
  • structural investigations of rare-earth (La, Lu, Y, Sc) aluminosilicate glasses, where we examine structure/physical-property relationships, as well as their dependence on composition and the field-strength of the RE3+ ion.
  • exploring structure/composition/bioactivity correlations in bioactivesilicate-based glasses, where we aim at better understanding which precise structural and compositional parameters that govern the bioactivity. We also study the biomimetic formation of hydroxy-carbonate apatite when the materials are subjected to simulated body fluids. Our studies target both melt-prepared samples, as well as self-assembled/templated mesoporous bioactive glasses.
These projects involve collaborations with several groups at the MMK department,  within Sweden and abroad.

Funding 

The current and previous projects are/were supported by the Swedish Research Council (VR), the Carl Trygger Foundation, the Magn. Bergvall Foundationthe Foundation of Lars Hierta's minnethe Wenner-Gren Foundationsthe Royal Swedish Academy of Sciences (KVA)The Knut and Alice Wallenberg Foundationand Stockholm University.

 

Postdoctoral opportunities: please contact Mattias Edén.

Please note: A sound background in MAS NMR is required.