| 초록 |
Ion gels composed of copolymers and ionic liquids have attracted great interest as polymer gel electrolytes for various electrochemical applications. Here, we present highly robust ion gels based on a six-arm star-shaped block copolymer of (poly(methyl methacrylate)-b-polystyrene)6 and an ionic liquid of [EMI][TFSI]. Compared to typical ion gels based on linear PS-b-PMMA-b-PS, the (MS)6-based gels show mechanical moduli of more than twice under various strains. To demonstrate that (MS)6-based ion gels can serve as effective gel electrolytes for electrochemical applications, Ru(bpy)32+ is incorporated into the gels. In particular, flexible ECL devices based on (MS)6 gels exhibit high durability against bending deformation compared to devices with gels based on linear SMS having a similar molecular weight and a composition. This result implies that star-shaped block copolymers are effective gelators for achieving flexible/wearable electrochemical electronics. |
