Fig. 5: Organic solvent resistant and stretchable conductive fiber made of CPOU.

a Schematic of the electronic circuit consisting of the CPOU/copper conductive fiber. b Demonstration of the organic solvent resistant and stretchable properties for the CPOU/copper conductive fiber in series with an LED. (i) CPOU/copper conductive fiber immersed in THF, (ii) 2.5 times stretched for 5 s, and (iii) recovered within 1 min.