CIDEP study of 1,4-naphthosemiquinone in alcohols.
スポンサーリンク
概要
- 論文の詳細を見る
A Chemically Induced Dynamic Electron Polarization (CIDEP) signal of 1,4-naphthosemiquinone (NQH·) was examined by intermittent-light irradiation to a system of 1,4-naphthoquinone (NQ) and phenol (PhOH) in toluene–2-propanol (2:3), toluene–ethanol (2:3), and neat 2-propanol. The enhancement factors of the initial polarization and the F-pair polarization of the systems were determined separately. From the unusual pattern of a time profile of the ESR signal with a CIDEP phenomenon observed on the photoirradiated NQ–PhOH system in ethanol, it is concluded that in ethanol the photoexcited NQ first abstracts a hydrogen to give NQH· then NQH· releases a proton to form NQ<SUP>\newdot</SUP>.
著者
-
NIIZUMA Shigeya
College of Humanities and Social Science, Iwate University
-
Murakami Osamu
Department of Chemistry, Faculty of Science, Tohoku University
-
Sato Nobuyoshi
College of Humanities and Social Sciences, Iwate University
-
Kawata Hiroki
College of Humanities and Social Sciences, Iwate University
-
Kanemoto Akihiko
Department of Chemistry, Faculty of Science, Tohoku University
-
Kokubun Hiroshi
Department of Chemistry, Faculty of Science, Tohoku University
-
Sato Nobuyoshi
College of General Education, Iwate University
関連論文
- Synthesis and Unique Packing Structure by X-Ray Analysis of New Types of Stable Trithioles Bound to Fused Aromatic Systems
- Immunoreactive Corticotropin-Releasing Hormone (CRH) in Plasma and Hypothalamic Incubation Media as Assessed by a Novel and Highly Sensitive Immune Complex Transfer EIA
- Expression of Endothelin-1 and Adrenomedullin Was Not Altered by Leptin or Resistin in Bovine Brain Microvascular Endothelial Cells
- Expression of three vasoactive peptides, urotensin-II, adrenomedullin, and endothelin-1, in a human renal cell carcinoma cell line, VMRC-RCW
- Detection of the Activities of Multiple Protein Kinases in Lipopolysaccharide-Stimulated Macrophages by Renaturation
- CIDEP study of 1,4-naphthosemiquinone in alcohols.
- CIDEP study of durosemiquinone radical in various solvents.
- Electron Transfer Reaction in the Triplet State. Role of Ferrocene as an Electron Donor
- Free radicals produced from the derivatives of pyrylium salts in solution by photoillumination.
- Deactivation of triplet 2-naphthol and 1-anthrol by aromatic N-heterocycles.
- Intersystem crossing processes of acridine.
- Studies on Triplet Energy Transfer by Means of an Emission-Absorption Flash Technique. I. Reversible Energy Transfer between Xanthene Dyes and Anthracenes
- Multielement analysis of deep-sea sediments by photon activation.
- ESR Study on Fluorescein Semiquinone Radical
- Fluorescence Depolarization Study of Hydrogen Bonded 1-Anthrol
- Thermal Decay of the Colored Form in Photochromism of 2-Hydroxy-4-methoxytriphenylmethanol in n-Hexane
- A Study of Quenching of Triplets by Ferrocene
- Thermal Bleaching of the Colored Form in the Photochromism of 2-Hydroxy-2′,4,4′-trimethoxytriphenylmethanol in Acetonitrile