Raman spectroscopy and electrical properties of polypyrroledoped dodecylbenzene sulfonic acid/Y_(2)O_(3)composites (7 pages)

• M. Irfan ^[1] ; A. Mustafa ^[3] ; A. Shakoor ^[1] ; A.N. Niaz ^[1] ; N. Anwar ^[1] ; M. Imran ^[4] ; A. Majid ^[2]
  1. [1] Bahauddin Zakariya University

     Bahauddin Zakariya University

     Pakistán

     
  2. [2] University of Gujrat

     University of Gujrat

     Pakistán

     
  3. [3] Nishtar Medical College University of Health Sciences Lahore Punjab Pakistan
  4. [4] Govt College University (GCU) of Lahore Pakistan

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• Localización: Revista Mexicana de Física, ISSN-e 0035-001X, Vol. 70, Nº. 1, 2024
• Idioma: inglés
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• Resumen

  • The doped dodecylbenzene sulfonic acid (DBSA) with polypyrrole (PPy) and also incorporated an increasing concentration of Y_(2)O_(3) to obtainthe composites of PPy-DBSA-Y_(2)O_(3) via chemical polymerization technique. The PPy-DBSA-Y_(2)O_(3) composites formation were confirmedby interaction between PPy-DBSA and Y_(2)O_(3)-particles utilizing Raman spectroscopy. The SEM micrographs show that the composites arein the form of lengthened chains; increase in the particles size as equated with pristine PPy and Y_(2)O_(3) was also studied. Thermal stabilityof PPy-DBSA- Y_(2)O_(3) composites was improved as enhanced the load of Y_(2)O_(3)-particles. The increase in DC conductivity by mixing Y_(2)O_(3) into PPy-DBSA at all temperatures showed the three-dimensional Mott’s variable range hopping model. Density of localized states, hoppingdimension as well as activation energy are computed and found to be affected due to the presence of Y_(2)O_(3) in DBSA-PPy. The ESR of Y_(2)O_(3) (∼12Ω), PPy (∼11.80Ω), PPy-DBSA (∼11.30Ω) and PPy-DBSA-8%Y_(2)O_(3) composite (∼9.50Ω). EIS results confirm that thePPy-DBSA-8% Y_(2)O_(3) composite with a low value of impedance gives a maximum value of electrical conductivity.