||Azaïs, T.(Sorbonne Universités); Ajili, W.(Sorbonne Universités); Nassif, N.(CNRS); Auzoux-Bordenave, S.(Sorbonne Universités);
communication, we show how solid state nuclear magnetic resonance (ssNMR) can
allow the structural characterization of surfaces and disordered domains from
natural biominerals with a focus on bone and nacre.
A combination of highly advanced ssNMR experiments applied to various
biological mineralized tissues such as sheep bone, fin rays from Zebra fish as
well as adult and larva shell from European abalone Haliotis tuberculata leads
to an unprecedented structural characterization of that amorphous domains and
their corresponding organic-inorganic interface.
Finally, we will discuss the benefit of using dynamic nuclear polarization
(DNP) combined to ssNMR to selectively enhanced NMR signals from surface
species from biomineral crystals. Indeed, DNP is a recently developed technique
that allows the magnetization transfer from radicals unpaired electrons to
nuclei inducing a huge enhancement of the NMR signal (up to 660 !).