Journal
RSC ADVANCES
Volume 4, Issue 4, Pages 1857-1863Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3ra46087h
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Funding
- Gachon University [GCU-2013-R345]
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Naturally immiscible PEDOT:PSS and PDMS, which are a typical conducting polymer and an transparent elastomer, respectively, were blended by the support of PDMS-b-PEO. A block copolymer, PDMS-b-PEO, consisting of hydrophobic PDMS backbones and hydrophilic PEO side chains, significantly improved the miscibility of PEDOT: PSS and PDMS. At an optimal PDMS-b-PEO concentration of 30%, a cured PEDOT: PSS: PDMS film was found to be comprised of three-dimensional PDMS networks and a PEDOT: PSS phase filling in between the networks. The optimal blend film exhibited a conductivity comparable to a pure PEDOT: PSS film and a maximum strain to rupture of about 75%. It was also demonstrated that interconnects made of this blend film functioned well irrespective of the substrate and the pattern size, and could reproducibly operate under strains up to 50%. These results indicate that the PEDOT: PSS: PDMS blends could be a practical choice for organic interconnects for future stretchable electronics.
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