| pubmed-article:8863375 | rdf:type | pubmed:Citation | lld:pubmed |
| pubmed-article:8863375 | lifeskim:mentions | umls-concept:C1521991 | lld:lifeskim |
| pubmed-article:8863375 | lifeskim:mentions | umls-concept:C0026597 | lld:lifeskim |
| pubmed-article:8863375 | lifeskim:mentions | umls-concept:C0013766 | lld:lifeskim |
| pubmed-article:8863375 | pubmed:issue | 3 | lld:pubmed |
| pubmed-article:8863375 | pubmed:dateCreated | 1997-3-10 | lld:pubmed |
| pubmed-article:8863375 | pubmed:abstractText | The effect of molecular motion on the heteronuclear cross-polarization rate for the case of the spin-lock procedure was investigated. In applying heteronuclear solid state NMR techniques to mobile elastomer systems the influence of molecular motion cannot be neglected. Starting in the slow motion regime a strong collision model was used for predicting changes of the cross-polarization rate in the dipolar spectral density function of abundant spins. The dipolar correlation time and hence the cross-polarization rate is found to scale with the inverse of the correlation time of the molecular motion. The same behavior is obtained using a second approach valid in the intermediate molecular motion regime. This is based on the effect of the motion on the homonuclear and heteronuclear van-Vleck moments and leads to a linear dependence of the cross-polarization rate on the correlation time of molecular motion. This dependence was verified experimentally by 1H-13C high-resolution cross-polarization measurements on sulfur cross-linked elastomer systems. 13C rotating frame spin-lattice relaxation rate measurements were used to corroborate these data and the approximations used to evaluate the influence of molecular motion on cross-polarization rates. The dependence of these rates on the cross-link density of the elastomer network is analyzed and it is shown that they scale with the cross-link density. The correlation of the 1H-13C cross-polarization rates with the dynamic storage moduli was demonstrated. | lld:pubmed |
| pubmed-article:8863375 | pubmed:language | eng | lld:pubmed |
| pubmed-article:8863375 | pubmed:journal | http://linkedlifedata.com/r... | lld:pubmed |
| pubmed-article:8863375 | pubmed:citationSubset | IM | lld:pubmed |
| pubmed-article:8863375 | pubmed:chemical | http://linkedlifedata.com/r... | lld:pubmed |
| pubmed-article:8863375 | pubmed:chemical | http://linkedlifedata.com/r... | lld:pubmed |
| pubmed-article:8863375 | pubmed:status | MEDLINE | lld:pubmed |
| pubmed-article:8863375 | pubmed:month | Jun | lld:pubmed |
| pubmed-article:8863375 | pubmed:issn | 0926-2040 | lld:pubmed |
| pubmed-article:8863375 | pubmed:author | pubmed-author:BlümichBB | lld:pubmed |
| pubmed-article:8863375 | pubmed:author | pubmed-author:DemcoD EDE | lld:pubmed |
| pubmed-article:8863375 | pubmed:author | pubmed-author:FülberCC | lld:pubmed |
| pubmed-article:8863375 | pubmed:issnType | Print | lld:pubmed |
| pubmed-article:8863375 | pubmed:volume | 6 | lld:pubmed |
| pubmed-article:8863375 | pubmed:owner | NLM | lld:pubmed |
| pubmed-article:8863375 | pubmed:authorsComplete | Y | lld:pubmed |
| pubmed-article:8863375 | pubmed:pagination | 213-23 | lld:pubmed |
| pubmed-article:8863375 | pubmed:dateRevised | 2008-11-21 | lld:pubmed |
| pubmed-article:8863375 | pubmed:meshHeading | pubmed-meshheading:8863375-... | lld:pubmed |
| pubmed-article:8863375 | pubmed:meshHeading | pubmed-meshheading:8863375-... | lld:pubmed |
| pubmed-article:8863375 | pubmed:meshHeading | pubmed-meshheading:8863375-... | lld:pubmed |
| pubmed-article:8863375 | pubmed:meshHeading | pubmed-meshheading:8863375-... | lld:pubmed |
| pubmed-article:8863375 | pubmed:meshHeading | pubmed-meshheading:8863375-... | lld:pubmed |
| pubmed-article:8863375 | pubmed:meshHeading | pubmed-meshheading:8863375-... | lld:pubmed |
| pubmed-article:8863375 | pubmed:meshHeading | pubmed-meshheading:8863375-... | lld:pubmed |
| pubmed-article:8863375 | pubmed:year | 1996 | lld:pubmed |
| pubmed-article:8863375 | pubmed:articleTitle | The influence of molecular motion on cross-polarization in cross-linked elastomers. | lld:pubmed |
| pubmed-article:8863375 | pubmed:affiliation | RWTH-Aachen, Germany. | lld:pubmed |
| pubmed-article:8863375 | pubmed:publicationType | Journal Article | lld:pubmed |
| pubmed-article:8863375 | pubmed:publicationType | Research Support, Non-U.S. Gov't | lld:pubmed |
