關鍵字查詢 | 類別:期刊論文 | | 關鍵字:Syntheses and Eletrical Conductivities of 9-Fluorenone-iodine-alkali Iodide Complexes

[第一頁][上頁]1[次頁][最末頁]目前在第 1 頁 / 共有 02 筆查詢結果
序號 學年期 教師動態
1 76/1 化學系 魏和祥 教授 期刊論文 發佈 Syntheses and Eletrical Conductivities of 9-Fluorenone-iodine-alkali Iodide Complexes , [76-1] :Syntheses and Eletrical Conductivities of 9-Fluorenone-iodine-alkali Iodide Complexes期刊論文Syntheses and Eletrical Conductivities of 9-Fluorenone-iodine-alkali Iodide ComplexesYang, H. S.; 王啟銘; Wang, C. M.淡江大學化學學系臺北市:中國化學學會中國化學會會誌=Journal of the Chinese Chemical Society 34(4),頁301-307A new series of 9-fluorenone-iodine-alkali iodide complexes (FIMI, M=Na, K, Rb or Cs) has been prepared from chloroform. These complexes yield needle-like crystals with metalic luster along the needle axis. The longitudinal dc conductivities at room temperature are in the order of 10/sup -3/to 10/sup -5/ S cm/sup -1/. They all have semiconductive properties with activation energies of about 0.4 to 0.7 eV. A significant result is that the conductivity varies systematically with the cation size. A decrease in the cation results in an increase in the conductivity. Resonance Raman spectra show that iodine is present as a linear chain of symmetric I/sub 3//sup -/ units in these complexes. Infrared spectra of thes
2 76/1 化學系 王啟銘 教授 期刊論文 發佈 Syntheses and Eletrical Conductivities of 9-Fluorenone-iodine-alkali Iodide Complexes , [76-1] :Syntheses and Eletrical Conductivities of 9-Fluorenone-iodine-alkali Iodide Complexes期刊論文Syntheses and Eletrical Conductivities of 9-Fluorenone-iodine-alkali Iodide ComplexesYang, H. S.; 王啟銘; Wang, C. M.淡江大學化學學系臺北市:中國化學學會中國化學會會誌=Journal of the Chinese Chemical Society 34(4),頁301-307A new series of 9-fluorenone-iodine-alkali iodide complexes (FIMI, M=Na, K, Rb or Cs) has been prepared from chloroform. These complexes yield needle-like crystals with metalic luster along the needle axis. The longitudinal dc conductivities at room temperature are in the order of 10/sup -3/to 10/sup -5/ S cm/sup -1/. They all have semiconductive properties with activation energies of about 0.4 to 0.7 eV. A significant result is that the conductivity varies systematically with the cation size. A decrease in the cation results in an increase in the conductivity. Resonance Raman spectra show that iodine is present as a linear chain of symmetric I/sub 3//sup -/ units in these complexes. Infrared spectra of thes
[第一頁][上頁]1[次頁][最末頁]目前在第 1 頁 / 共有 02 筆查詢結果