Facile chemical strategy to synthesize Ag@polypyrrole microarrays and investigating its anisotropic effect on polymer conductivity
| Autor: | Zahoor Ahmad, Arshad Mehmood, Sumra Idrees, Muhammad Rafiq, Tashfeen Akhtar, Muhammad Aziz Choudhary |
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| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Materials science
Chemical substance Nanotechnology 02 engineering and technology Conductivity nano-assembly 010402 general chemistry Polypyrrole ncs microarrays 01 natural sciences anisotropic conductivity thermal stability Nanomaterials chemistry.chemical_compound General Materials Science Anisotropy Materials of engineering and construction. Mechanics of materials chemistry.chemical_classification Mechanical Engineering Polymer 021001 nanoscience & nanotechnology Condensed Matter Physics 0104 chemical sciences chemistry Mechanics of Materials TA401-492 0210 nano-technology Science technology and society |
| Zdroj: | Materials Science-Poland, Vol 37, Iss 4, Pp 563-569 (2019) |
| Popis: | A facile chemical approach was developed to fabricate microarrays (MAs) of Ag@polypyrrole nanocables (NCs). The strategy involved crosslinking the NCs by tetraethoxy silane (TEOS) under continuous pulse sonication without using a substrate. The material was characterized by scanning electron microscope (SEM) coupled with EDX, which revealed the longitudinal interconnections within the nanocables and creating unidirectional alignment in the form of MAs. FT-IR and Raman spectroscopy was employed to characterize the encapsulating polymer as polypyrrole (ppy) around Ag nanowires (NWs). The microarrays produced red shift in surface plasmon resonance (SPR) of Ag NWs, and drastically improved the thermal stability and conductivity of encasing ppy. It has imparted anisotropic conductivity effect on ppy which resulted in sharp decrease in resistivity from 8.35 × 1010 Ω to 2.449 Ω, when NCs were isolated and crosslinked into MAs form, respectively. The drastic decrease in resistivity of ppy was due to the anisotropic effect produced by the MAs format of NWs. |
| Databáze: | OpenAIRE |
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