Electron-nuclear double resonance (endor) of pitches

Autor:	L.S. Singer, Irwin C. Lewis
Rok vydání:	1984
Předmět:	education.field_of_study Electron nuclear double resonance Chemistry Population Analytical chemistry Resonance General Chemistry Atmospheric temperature range Phase (matter) General Materials Science education Glass transition Spin (physics) Hyperfine structure
Zdroj:	Carbon. 22:487-492
ISSN:	0008-6223
DOI:	10.1016/0008-6223(84)90080-0
Popis:	A preliminary study of Electron-Nuclear Double Resonance (ENDOR) has been carried out on carbonaceous pitches and their solutions. Large matrix and hyperfine ENDOR signals have been observed, the former being very sensitive to temperature, i.e. molecular motion. Measurements made over the temperature range − 100° to + 300°C indicate correlations of ENDOR response with glass transition temperatures of the pitches. The ENDOR of various concentrations of petroleum pitch in toluene suggests the presence of molecular association. Several previously unobserved spin population and phase phenomena have also been noted.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::0184f2788fcd728092ab691d6b4e4363 https://doi.org/10.1016/0008-6223(84)90080-0 Zobrazit plný text záznamu