The results of the measurement are shown in Fig. 3. First of all, at lower temperatures, we could not reproduce the reported preservation of the same order conductivity as those at higher temperatures. As shown in Fig. 3, for the measurement of the isolated poly1-doped with LiTFSI, the conductivity value at 60 °C (1.69 × 10−6 S cm−1, which is about 1/30 of the reported value of the in situ prepared sample) drops to 1.18 × 10−8 S cm−1 at 10 °C. When the sample was prepared in situ following the reported procedure [7], the conductivity value increased to 1.35 × 10−5 S cm−1 at 60 °C, which is still about 1/4 of the reported value, and again decreased with the decreasing temperature to 5.83 × 10−8 S cm−1 at 10 °C. By 1H NMR analysis of the in situ prepared sample (Fig. S2 in Supplementary data), we observed the