Fabrication of Magnetic Spider Silk and Other Silk-Fiber Composites Using Inorganic Nanoparticles

Autor:	Eric L. Mayes, Stephen Mann, Fritz Vollrath
Rok vydání:	1998
Předmět:	Fabrication Materials science Scattering Mechanical Engineering Knight shift Carbon-13 NMR Mechanics of Materials Lattice (order) Organic superconductor Molecule Condensed Matter::Strongly Correlated Electrons General Materials Science Spider silk Composite material
Zdroj:	Advanced Materials. 10:801-805
ISSN:	1521-4095 0935-9648
DOI:	10.1002/(sici)1521-4095(199807)10:10<801::aid-adma801>3.0.co;2-i
Popis:	C NMR study of the organic superconductor k-(ET)2Cu[N(CS)2]Br via MAS and cross-polarization techniques with C-enriched ET molecules. The Knight shift tensor of the central carbon atoms has been derived. A lowering of the symmetry below 273 K has been deduced from the splitting of the C MAS NMR lines of the central carbons. A distortion of the organic lattice occurs below about 200 K when the motion of the ethylene groups is frozen. The incommensurate character of the distortion is implied by the inhomogeneous broadening of the NMR lines. This feature rules out the commensurate nature claimed from earlier diffuse X-ray scattering experiments.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::9cfeee3ac1263962519dc8357399f03e https://doi.org/10.1002/(sici)1521-4095(199807)10:10<801::aid-adma801>3.0.co Zobrazit plný text záznamu Plný text