Journal: Solid State Nuclear Magnetic Resonance
Article Title: Solid state NMR - An indispensable tool in organic-inorganic biocomposite characterization; refining the structure of octacalcium phosphate composites with the linear metabolic di-acids succinate and adipate
Figure Lengend Snippet: 13 C— 13 C proton-driven spin diffusion correlation (PDSD, 5 ms mixing time) experiments on uniformly 13 C labelled OCP-SUC (left) and OCP-ADI (right). Correlations proving a single non-centrosymmetric ADI within the OCP-ADI structure are highlighted in red. Corresponding 1D 13 C spectra are superimposed. Signal broadening relative to unlabelled composites is ascribed to residual 13 C— 13 C dipolar interactions, and unresolved 13 C— 13 C scalar coupling. (For interpretation of the references to colour in this figure legend, the reader is referred to the Web version of this article.)
Article Snippet: 2.1 Synthesis of OCP, OCP-SUC, and OCP-ADI Most reagents were purchased from Sigma-Aldrich and used as received. (U-13 C4 )-SUC and (U—13 C6 )-ADI were purchased from Cambridge Isotope Laboratories (Andover, MS, USA).
Techniques: Diffusion-based Assay, Mass Spectrometry