Growth Mechanism of Strain-Dependent Morphological Change in PEDOT:PSSFilms
| Autor: | Gwang Mook Choi, Ju-Young Cho, Ki Tae Nam, Seung-Min Lim, Young-Chang Joo, Yoo-Yong Lee, In-Suk Choi |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
chemistry.chemical_classification
Coalescence (physics) Multidisciplinary Materials science 02 engineering and technology Polymer Conductivity 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Article 0104 chemical sciences PEDOT:PSS chemistry Chemical engineering Electrical resistivity and conductivity 0210 nano-technology Electrical conductor |
| Zdroj: | SCIENTIFIC REPORTS(6) Scientific Reports |
| Popis: | Understanding the mechanism of the strain-dependent conductivity change in polymers in stretched conditions is important. We observed a strain-induced growth of the conductive regions of PEDOT:PSS films, induced by a coalescence of conductive PEDOT-rich cores. This growth due to coalescence leads to a gradual decrease in the electrical resistivity up to 95%, independent of the thickness of the PEDOT:PSS films. The primary mechanism for the evolution of the PEDOT-rich cores proceeds by the cores growing larger as they consuming relatively smaller cores. This process is caused by a strain-induced local rearrangement of PEDOT segments in the vicinity of PSS shells around the cores and also changes the chemical environment in PEDOT, induced by the electron-withdrawing effects around the PEDOT chains. The strain-induced growth mechanism is beneficial to understanding the phenomenon of polymeric chain rearrangement in mechanical deformation and to modulating the electrical conductivity for practical applications. |
| Databáze: | OpenAIRE |
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