Electron Scavenging Study on the Photobleaching of Trapped Electrons in 3-Methylhexane Matrices at 77 K

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概要

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• The effect of addition of sulfur hexafluoride as an electron scavenger on quantum efficiency was investigated for the decay of trapped electrons in 3-methylhexane matrices at 77 K during photobleaching in the wavelength range 700–1900 nm. Since the quantum efficiency for the decay of trapped electrons in pure matrices is independent of the initial concentration, almost all the recombination of liberated electrons with the cations is geminate. The increase in quantum efficiency for the decay of trapped electrons by the addition of the electron scavenger SF<SUB>6</SUB> was analyzed quantitatively. The quantum efficiency for the photoliberation of trapped electrons from the trapping sites may be about unity. The liberated electrons in the absence of the electron scavenger are retrapped or neutralized. The ratio of the former process to the latter at a wavelength greater than 1500 nm is much larger than that at a shorter wavelength. The wavelength dependence of the ratios of the electron scavenging process to these processes has also been discussed.

• 公益社団法人 日本化学会の論文

著者

• Yamazaki Hideo

  Laboratory of Physical Chemistry Tokyo Institute of Technology

• Hatano Yoshihiko

  Laboratory of Physical Chemistry, Tokyo Institute of Technology

• Oka Koichi

  Laboratory of Physical Chemistry, Tokyo Institute of Technology

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• Electron Scavenging Study on the Photobleaching of Trapped Electrons in 3-Methylhexane Matrices at 77 K
• The Decomposition of Nitrous Oxide in the Radiolysis of n-Hexane Solutions
• Water Formation in the Gas Phase Radiolysis of Nitrous Oxide-Hydrocarbon Mixtures
• The Electron-scavenging Process in 3-Methylhexane Glass at 77 K Studied by ESR
• The Radiophoto-luminescence of γ-Irradiated Hydrocarbon Glasses at 77 K
• The Vacuum Ultraviolet Photolysis of Liquid n-Hexane in the Presence of SF6
• The Measurement of Water and Other Oxygen-containing Products in the Radiolysis of Cyclohexane Solutions of Nitrous Oxide

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