3.2. Li conductivity measurement of polymers containing N-phenyl-2,6dimethoxybenzamide group
All the polymer samples were subjected to Li ion conductivity measurement, including a commercial PEO sample (Mn = 2000) for comparison. As for poly1, in addition to the isolated sample, an in situ generated poly1 with the anionic initiation with LiTFSI was also prepared following the literature procedure [7], and its ion conductivity was evaluated. For comparison, the [LiTFSI]/[O] ratio was adjusted to 1.0 for all the measurements, following the literature [7]. No sample degradation was observed during the measurement, indicating that the polymers possess enough electrochemical stability as SPE materials at least under the conditions we employed.