English  |  正體中文  |  简体中文  |  全文筆數/總筆數 : 49521/84657 (58%)
造訪人次 : 7597844      線上人數 : 55
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library & TKU Library IR team.
搜尋範圍 查詢小技巧:
  • 您可在西文檢索詞彙前後加上"雙引號",以獲取較精準的檢索結果
  • 若欲以作者姓名搜尋,建議至進階搜尋限定作者欄位,可獲得較完整資料
  • 進階搜尋
    請使用永久網址來引用或連結此文件: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/25325


    題名: Synthetic conducting materials VIII. Synthesis and characterization of 7,7,8, 8-tetracyanoquinodimethane salt with tetrazine derivatives
    作者: 王文竹;Wang, Wen-jwu;Shoaw, T. Y.
    貢獻者: 淡江大學化學學系
    日期: 1991-05-15
    上傳時間: 2009-12-01
    出版者: Elsevier
    摘要: A series of 1,2,4,5-tetrazine derivatives have been synthesized from 2-cyanopyridine and hydrazine. The charge transfer complexes of tetrazine derivatives and 7,7,8,8-tetracyanoquinodimethane (TCNQ) have been prepared and characterized by elemental analysis, infrared, electronic, electron spin resonance, mass spectra, magnetic susceptibility and electric conductivity measurements. The infrared spectra show a very strong absorption envelope in the range between 4000 to 1000 cm−1 causing from the electronic conduction band. The degree of charge transfer was estimated as 0.6 by using the cyano stretching frequency of TCNQ in complex. The electric conductivity (powder pellet) is 1.99 Scm−1 at room temperature with activation energy of 0.113 eV. The charge transfer complexes have semiconductor properties investigated by variable temperature conductivity measurements.

    Electron spin resonance spectra were recorded on these charge transfer complexes at different temperature. The observed g-values increased with decreasing temperature. The peak broadened and peak height decreased with decreasing temperature. On the basis of these results, no local unpaired ellectrons contributed from tetrazine cation were proposed.
    關聯: Synthetic metals 42(1-2), pp.1723-1728
    DOI: 10.1016/0379-6779(91)91940-C
    顯示於類別:[化學學系暨研究所] 期刊論文

    文件中的檔案:

    檔案 大小格式瀏覽次數
    0KbUnknown191檢視/開啟

    在機構典藏中所有的資料項目都受到原著作權保護.

    TAIR相關文章

    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library & TKU Library IR teams. Copyright ©   - 回饋