Poly(ionic liquid)s with non-branched, di-branched, and tri-branched side chains were synthesised using cationic glycidyl triazolyl polymers (GTPs). Based on the analyses of these cationic GTPs, the effects of side-chain branching on physical properties, such as glass transition temperature and ionic conductivity, were discussed. It was confirmed that the ionic conductivity increased with the degree of side-chain branching. Despite being a high-molecular-weight polymer (1.9 × 10⁶ Da), GTP with tri-branched side chains exhibited a high ionic conductivity of 3.6 × 10⁻⁵ M at 25 °C under dry conditions, which is higher than the benchmark value of the conventional poly(ionic liquid)s proposed by Shaplov, Marcilla, and Mecerreyes (3.0 × 10⁻⁵ M at 25 °C, dry conditions, molecular weight >10⁵ Da). From the analysis based on the electrode polarisation model, the higher ionic conductivity of cationic GTPs with branched side chains can be attributed to their higher conducting ion mobility in the polymer matrix. These results indicate that side-chain branching is effective in breaking the conventional limit of ionic conductivity of poly(ionic liquid)s.

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带有支链侧链的聚（离子液体）：打破常规离子电导率记录的聚合物设计

使用阳离子缩水甘油基三唑基聚合物（GTP）合成具有非支链，双支链和三支链侧链的聚离子液体。在分析这些阳离子GTP的基础上，讨论了侧链支化对物理性质（如玻璃化转变温度和离子电导率）的影响。证实了离子电导率随侧链支化程度而增加。尽管是高分子量聚合物（1.9×10 ⁶ Da），但具有三支侧链的GTP在干燥条件下于25°C时仍具有3.6×10 ^-5 M的高离子电导率，高于基准Shaplov，Marcilla和Mecerreyes提出的常规聚（离子液体）的值（3.0×10 ^-5M在25°C，干燥条件下，分子量> 10 ⁵ Da）。通过基于电极极化模型的分析，具有支链侧链的阳离子GTP的较高离子电导率可归因于它们在聚合物基质中的较高导电离子迁移率。这些结果表明，侧链支化有效地打破了聚离子液体的常规离子电导率极限。