The Interaction of Oxygen with Organic Molecules. III. Electron Transfer between Oxygen and Aromatic Amines Studied by Flash Technique

スポンサーリンク

概要

• 論文の詳細を見る

• Flash photolysis of aniline derivatives in various solutions has been studied in oxygenated and deoxygenated conditions. Absorption spectra of the triplet states appeared in deoxygenated liquid paraffin solutions, but no transient absorption was observed in the oxygenated liquid paraffin solutions. Transient spectra, due to the cations of the anilines, were observed in deoxygenated ethanol solutions, but none in oxygenated ethanol. In highly polar solvents—acetonitrile, water, and formamide—either deoxygenated or oxygenated, the cation was observed. In the case of oxygenated solutions, the initial yield of the cation was found to be proportional to the intensity of the flash light, indicating that the ionization is a one-photon process. These results, together with the previous findings that the photo-ionization of organic molecules in solutions are caused by the two-step, biphotonic excitation processes strongly suggest that the charge transfer states are formed between the aromatics and the oxygen molecule, either by direct excitation or <I>via</I> the interaction of excited anilines and the ground state of oxygen, and the charge transfer states then lead to the solvated cations and anions in highly polar solvents. The decay of the ions have been found to follow the second order kinetics.

• 公益社団法人 日本化学会の論文

著者

• Tsubomura Hiroshi

  Department of Applied Chemistry, Faculty of Engineering, Osaka University

• Hori Mitsufusa

  Department of Chemistry, Faculty of Engineering Science, Osaka University

• Itoi Hiroyasu

  Department of Chemistry, Faculty of Engineering Science, Osaka University

関連論文

• Mechanism of Charge-transfer Polymerization. III. Flash Photolysis of N-Vinylcarbazole–Chloranil System
• Intermediates and Mechanism of Photo-Oxygenation Reaction of Triethylamine
• Electrical and spectroscopic investigations of molecular layers of fatty acids including carotene.
• Electrical properties of Langmuir films of fatty acid salts and carotenoic acid.
• Influence of chemisorption of 2-propanethiol on the electrical properties of silver oxide compaction.
• Ionization Energies and Rydberg States of Tetraaminoethylenes
• Mechanism of Charge-transfer Polymerization. X. Flash Photolysis of the N-Vinylcarbazole–Pyromellitic Dianhydride System
• Single-Photon Ionization in the Flash Photolysis of N,N,N′,N′-Tetramethyl-p-phenylenediamine in Solution
• Solvent Effect on the Dimerization of Tetracyanoquinodimethane Anion Radical
• An UV-visible spectrophotometer provided with a photon counting system for the studies of very weak absorption spectra.
• The Electronic Absorption Spectra of UV Irradiated Anilines Adsorbed on Porous Vycor Glass
• Oxidation of a Conductive Polymer-TCNQ Salt with Atmospheric Oxygen
• Experimental Determination of Ionization Potentials of Organic Amines, β-Carotene and Chlorophyll a
• Charge Transfer Interaction between the Cation Radicals of Some Aromatic Diamines and Triethylamine
• Electronic Spectra and Electric Properties of Poly(1-methyl-4-vinylpyridinium)–TCNQ Salt
• Effect of etching on intrinsic and dye-sensitized photocurrents in zinc oxide electrodes.
• Dye-sensitization on the photocurrent at zinc oxide electrode in aqueous electrolyte solution.
• The Photovoltaic Effect in Naphthacene–Gold Layers
• Reactions of the cation radicals of aromatic diamines with their parent molecules or aliphatic amines.
• The visible absorption spectrum of water.
• The Photo-oxygenation Reactions of Diethyl Ether, p-Phenylenediamine, and N,N-Dimethylaniline
• Chelation effect of alizarin dyes on the semiconductor-aqueous solution systems.
• Further studies of electroluminescence spectra of the n-GaP semiconductor electrode in relation with the surface-trapped holes.
• Potentiometric and spectroscopic investigations of the reaction of fluorescein isothiocyanate with an amine chemically bound on solid surfaces.
• The Interaction of Oxygen with Organic Molecules. III. Electron Transfer between Oxygen and Aromatic Amines Studied by Flash Technique
• Simultaneous Formation of Perylene Cation and Anion by Flash Excitation of Perylene in Solutions
• Photo-Ionization of Molecules in Solutions. VI. Studies on the Photo-current Arising from the Flash-Excitation of Aromatics in Solutions
• Photocurrents in the ZnO and TiO2 photoelectrochemical cells sensitized by xanthene dyes and tetraphenylporphines. Effect of substitution on the electron injection processes.
• The Interaction of Oxygen with Organic Molecules. II. Oxygen Quenching of the Excited States of Adsorbed Aromatic Hydrocarbons
• Photoelectron ejection and fluorescence from molecular "rydberg" states in polar solvents.

もっと見る 閉じる

スポンサーリンク