High Reactivity of Heterocoerdianthrones (HCDs) in Photoperoxidation and Thermal Stability of Their Endoperoxides. Use of HCD as a Photosensitizer under Sunlight

Autor:	Susumu Narita, Takashi Masunaga, Jiro Motoyoshiya, Sadao Hayashi, Shigeru Ishiguro, Daisuke Harumoto
Rok vydání:	1993
Předmět:	Reaction rate constant Chemistry biological sciences Thermal decomposition Thermal stability Photosensitizer Reactivity (chemistry) General Chemistry Activation energy Singlet state Photochemistry Quinone
Zdroj:	Bulletin of the Chemical Society of Japan. 66:1166-1171
ISSN:	1348-0634 0009-2673
DOI:	10.1246/bcsj.66.1166
Popis:	The measured reactivity indices (β-values) of heterocoerdianthrones (HCDs) in self-sensitized photoperoxidation indicate a high reactivity toward singlet-oxygen. Such a high reactivity is not only due to an effective singlet-oxygen production due to the highly fluorescent character, but also due to a strained structure, as predicted by a molecular calculation. On the other hand, the large thermal stability of their endoperoxides (POs), revealed by the large activation energy in thermal decomposition, is also explained by considering the strained structure of the parent HCDs. As a prospect of solar synthesis, one of the HCD derivatives was applied to a photosensitizer for singlet-oxygen oxidation.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::fdb1e19a1db0bdcc47393832b3058230 https://doi.org/10.1246/bcsj.66.1166 Zobrazit plný text záznamu