Synthesis and characterization of terepthalaldehyde-thiocarbohydrazide polymer doped with Cu(II) and Zn(II) Metal ions for solar cell applications

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• 作者：Mudasir Ahmad ; Kaiser Manzoor ; Shakeel Ahmed ; Saiqa Ikram ; ^{sikram@jmi.ac.in" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Thiocarbohydrazide ; Band gap ; Polymers ; Fluorescence
• 刊名：Optik - International Journal for Light and Electron Optics
• 出版年：2016
• 出版时间：May 2016
• 年：2016
• 卷：127
• 期：10
• 页码：4329-4332
• 全文大小：784 K

文摘

A convenient synthesis method and the properties of a polynuclear Cu(II) and Zn(II) terapthaldehyde-thiocarbohydrazide polymeric metal complexes has been discussed in this work. A product of terepthalaldehyde–thiocarbohydrazide as condensed polymer (TThP) was synthesized by polycondensation reaction of terepthalaldehyde with thiocarbohydrazide. Two polymeric metal complexes of the condensed product [(C₁₅H₁₂N₄S)₂CuCl₂]_n (TThP–CuCl₂) and [(C₁₅H₁₂N₄S)₂ZnCl₂]_n (TThP–ZnCl₂) were prepared with CuCl₂ and ZnCl₂ metal salts separately and compared for property evaluation. Structural analysis was carried out by elemental analysis, SEM and FTIR, thermal analysis with the help of TGA and optical properties was carried with UV–visible and fluorescence techniques. TThP shows fluorescence at 424 nm at an excitation wavelength of 435 nm and its polymer complexes TThP–CuCl₂ and TThP–ZnCl₂ show fluorescence at the same wavelength with higher intensity. The band gap of the synthesized polymer metal complexes decrease from 3.3 to 2.6 eV as metals varied from M = Cu(II)–Zn(II). This confirms the successful inclusion of metals in polymer back bone.