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    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/25332


    Title: Synthetic conductive materials V. Synthesis and characterization of charge transfer complex of 3, 6-bis(2'-pyridyl)-4, 5-dihydro-1, 2, 4, 5-tetrazine and 7, 7, 8, 8-tetracyanoquinodimethane
    Authors: 王文竹;Wang, Wen-jwu;Chen, C. C.
    Contributors: 淡江大學化學學系
    Date: 1988-12-30
    Issue Date: 2009-12-01
    Publisher: Elsevier
    Abstract: 3,6-Bis(2′-pyridyl)-4,5-dihydro-1,2,4,5-tetrazine (PTAH2) has been synthesized by 2-cyanopyridine and hydazine. The acetonitrile solution of PTAH2 and 7,7,8,8-tetracyanoqinodimethane was mixed with 1:1mole ratio and stand for 2 weeks. The black needle crystal has been characterized by elemental analysis, IR, NMR, ESR, MS, UV/VIS/NIR, DSC, CV, magnetic susceptibility and electric conductivity. This charge-transfer complex has (PTAH2) (TCNQ) composition with segregated stacking. The segregated stacking was evidenced by IR spectra which show very strong absorption before 1000 cm−1 then drop to normal pattern. Many sharp indentations in a very broad electronicabsorption envelope which had a steep edge at 1000 cm−1 caused byvibrations whose absorption falls inside the conduction band were observed in 4000-1000 cm−1 range. All other physical properties characterized by above physical methods will be discussed. The electric conductivity (powder form) is 4.8 × 10−1Scm−1 at 20°C with activation energy of 0.08 eV. This very low activation energy may be caused by contact resistance between powder particles. The intropsic properties of electric conduction may be metallic type.
    Relation: Synthetic metals 27(3-4), pp.219-224
    DOI: 10.1016/0379-6779(88)90147-6
    Appears in Collections:[化學學系暨研究所] 期刊論文

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