Deuterium isotope effects in zero‐field splittings of oriented triplet states of 1,2;5,6‐dibenzanthracene, phenanthrene, and naphthalene

Autor:	Roger E. Gerkin, A. S. Cullick, David L. Thorsell, Arthur M. Winer
Rok vydání:	1974
Předmět:	General Physics and Astronomy Phenanthrene Photochemistry law.invention chemistry.chemical_compound Deuterium Zero field chemistry Chemical physics law Kinetic isotope effect Molecule Physical and Theoretical Chemistry Phosphorescence Electron paramagnetic resonance Naphthalene
Zdroj:	The Journal of Chemical Physics. 61:3450-3458
ISSN:	1089-7690 0021-9606
Popis:	Changes in the zero‐field splitting parameters of phosphorescent 1,2;5,6‐dibenzanthracene, phenanthrene, and naphthalene oriented in single‐crystal hosts have been determined at temperatures near 77°K upon perdeuterating the phosphorescent molecules, the host molecules, or both. Through control and determination of appropriate experimental variables these changes have been shown to arise strictly from the isotopic substitution. For the naphthalene‐biphenyl and phenanthrene‐biphenyl systems readily measurable changes were observed upon isotopic substitution of either guest or host molecules. The data support the distinction of ``guest'' and ``host'' isotopic effects for zero‐field splitting parameters, but definitive analysis of the origin of these effects awaits further work.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::fcc947f4ac08cefc83ddfa5ceb3a9410 https://doi.org/10.1063/1.1682514 Zobrazit plný text záznamu