Back to Search
Start Over
Efficiency of dipolar and J-derived solid-state NMR techniques for a new pair of nuclei {31P,29Si}. Towards the characterization of Si–O–P mesoporous materials
- Source :
-
Comptes Rendus Chimie . Apr2008, Vol. 11 Issue 4/5, p387-397. 11p. - Publication Year :
- 2008
-
Abstract
- Abstract: Solid-state NMR methods based on dipolar and J-derived experiments such as CP, MAS-J-HMQC and MAS-J-INEPT MAS have been developed in the frame of the {31P,29Si} spin pair. The potential of these techniques has been demonstrated using model compounds including crystalline silicophosphate phases (Si5O(PO4)6 and various SiP2O7 polymorphs). Spatial interactions as well as through-bond connectivities were established. Evaluation of isotropic 2 J P–O–Si coupling constants has been established by careful analysis of the HMQC and INEPT build-up curves under fast MAS. The efficiency of the 31P→ 29Si CP MAS experiment for the detailed characterization of Si–O–P mesoporous materials (at low temperature) was demonstrated. The incorporation of P atoms in the silica network has been proved unambiguously. Such materials could be appropriate for biocompatibility purposes. [Copyright &y& Elsevier]
- Subjects :
- *PHOSPHATASES
*SILICA
*ATOMS
*BIOCOMPATIBILITY
*CRYSTALS
Subjects
Details
- Language :
- English
- ISSN :
- 16310748
- Volume :
- 11
- Issue :
- 4/5
- Database :
- Academic Search Index
- Journal :
- Comptes Rendus Chimie
- Publication Type :
- Academic Journal
- Accession number :
- 31581501
- Full Text :
- https://doi.org/10.1016/j.crci.2007.09.012