Experimental Determination of Ionization Potentials of Organic Amines, β-Carotene and Chlorophyll a
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概要
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Ionization potentials (<I>I</I><SUB>p</SUB>'s) of several organic compounds have been determined by the method of photocurrent measurements in gas and organic solvents. It has been found that the vapor-phase <I>I</I><SUB>p</SUB>'s, calculated from those determined from the onsets of the photo-currents in solutions by using Born equation for the solvation energies of the cations and a common term for the energy of the electron in solution, agree well with those measured in the vapor phase. Based on this result, the <I>I</I><SUB>p</SUB>'s of molecules in the gas phase can be derived from those measured in the solution. This method is useful for the determination of <I>I</I><SUB>p</SUB>'s of large molecules which cannot be obtained in the gas phase. Some of the <I>I</I><SUB>p</SUB>'s obtained are: 5.6 for 1,1,4,4-tetrakis(dimethylamino)butadiene, 5.7 for 3,3′-dimethyl-2,2′-bibenzothiazolinylidene, 6.4 for β-carotene, 6.1 for chlorophyll a, 6.3 for dihydridobis(π-cyclopentadienyl)tungsten (eV unit). The conditions of lowering the <I>I</I><SUB>p</SUB>'s of organic molecules are discussed.
- 公益社団法人 日本化学会の論文
著者
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Nakato Yoshihiro
Department Of Chemistry Graduate School Of Engineering Science And Research Center For Photoenergeti
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Chiyoda Takeshi
Department Of Medicinal Chemistry Meiji College Of Pharmacy
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Tsubomura Hiroshi
Department of Applied Chemistry, Faculty of Engineering, Osaka University
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Nakato Yoshihiro
Department of Chemistry, Faculty of Engineering Science, Osaka University
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Chiyoda Takeshi
Department of Chemistry, Faculty of Engineering Science, Osaka University
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