Double-quantum filtered heteronuclear correlation spectroscopy under magic angle spinning
| Autor: | Chun-Pin Lin, Shih-Hao Huang, Chung-Yuan Mou, Tim W. T. Tsai, Yao-Hung Tseng, Jerry C. C. Chan, Yi-Ling Tsai |
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| Rok vydání: | 2007 |
| Předmět: |
Nuclear and High Energy Physics
Materials science Analytical chemistry Second moment of area In Vitro Techniques Models Biological Sensitivity and Specificity Molecular physics Homonuclear molecule Spectral line Magic angle spinning Animals Computer Simulation Rats Wistar Nuclear Magnetic Resonance Biomolecular Instrumentation Radiation Reproducibility of Results Pulse sequence General Chemistry Rats Incisor Durapatite Models Chemical Heteronuclear molecule Dentin Spin Labels Two-dimensional nuclear magnetic resonance spectroscopy Excitation |
| Zdroj: | Solid State Nuclear Magnetic Resonance. 31:55-61 |
| ISSN: | 0926-2040 |
| DOI: | 10.1016/j.ssnmr.2007.01.001 |
| Popis: | We present a simple experimental method to extract the van Vleck second moment of a multiple-spin system under high-resolution condition. The idea is to incorporate a double-quantum (DQ) filter into the pulse sequence of heteronuclear correlation spectroscopy so that a DQ excitation profile can be obtained by measuring a series of 2D spectra. The effects of spinning frequency and proton decoupling are demonstrated on the measurements of two model compounds, viz. hydroxyapatite and brushite. Based on the results obtained for the model compounds, the P-31 homonuclear second moment of the apatite component in rat dentin is characterized. The method is generally suited for the study of bone, enamel and dentin. |
| Databáze: | OpenAIRE |
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