Abstract
Herein, we designed and synthesised a stretchable, solution-processable and crosslinkable π-conjugated polymer (CP) comprised of functional poly(n-butyl acrylate-co-glycidyl methacrylate) (poly(BA-co-GMA) side chains along a poly(3,4-ethylenedioxithiophene) (PEDOT)-based CP backbone. The incorporation of PBA side chains endowed the rigid conjugated backbone with intrinsic softness and adhesiveness as well as superior stretchability of up to 200% strain without formation of cracks. Moreover, the epoxy group-bearing GMA segments enabled the chemical crosslinking between the polymer chains, rendering the resultant polymer films organic solvent-resistant, while still affording 50-fold improved mechanical stretchability in comparison to the brittle non-grafted backbone polymer. This work opens up possibility of developing solution-processable PEDOT analogues for stretchable and wearable electronics applications.
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