Institute of Chemical Technology and Engineering, Poznan University of Technology, Berdychowo 4, 60-965 Poznan, Poland.
Molecules. 2021 Feb 2;26(3):758. doi: 10.3390/molecules26030758.
Flexible ionogels with good mechanical properties were obtained in situ by thiol-ene photopolymerization of trimethylolpropane tris(3-mercaptopropionate) (TMPTP) and 1,3,5-triallyl-1,3,5-triazine-2,4,6(1H,3H,5H)-trione (TATT) (with C=C: SH ratio 1:1) in four imidazolium ionic liquids (1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide-EMImNTf, 1-ethyl-3-methylimidazolium trifluoromethanesulfonate-EMImOTf, 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide-BMImNTf, and 1-butyl-3-methylimidazolium trifluoromethanesulfonate-BMImOTf) used in the range 50 to 70 wt.%. The mechanical and electrochemical properties of obtained ionogels were examined. Ionogels with ionic liquids (ILs) with NTf anion are more puncture resistant than with OTf anion. Moreover, ionogels with the NTF anion have better electrochemical properties than those with the OTf anion. Although it should be noted that ionogels with the EMIm cation have a higher conductivity than the BMIm. This is connected with intermolecular interactions between polymer matrix and IL related to the polarity of IL described by the Kamlet-Taft parameters. These parameters influence the morphology of the polymer matrix (as shown by the SEM micrograph), which is formed by interconnected polymer spheres.
通过三羟甲基丙烷三（3-巯基丙酸酯）（TMPTP）和 1,3,5-三烯丙基-1,3,5-三嗪-2,4,6（1H,3H,5H）-三酮（TATT）（C=C：SH 比为 1:1）的硫醇-烯光聚合，原位获得具有良好机械性能的柔性离子凝胶，在四种离子液体（1-乙基-3-甲基咪唑双（三氟甲磺酰基）亚胺-EMImNTf、1-乙基-3-甲基咪唑三氟甲磺酸盐-EMImOTf、1-丁基-3-甲基咪唑双（三氟甲磺酰基）亚胺-BMImNTf 和 1-丁基-3-甲基咪唑三氟甲磺酸盐-BMImOTf）中使用的范围为 50 至 70wt%。研究了所得离子凝胶的机械和电化学性能。带有 NTf 阴离子的离子凝胶比带有 OTf 阴离子的离子凝胶更耐刺穿。此外，带有 NTF 阴离子的离子凝胶具有比带有 OTf 阴离子的离子凝胶更好的电化学性能。尽管应该注意的是，具有 EMIm 阳离子的离子凝胶的电导率高于 BMIm。这与聚合物基质与 IL 之间的分子间相互作用有关，该相互作用与 IL 的极性有关，由 Kamlet-Taft 参数描述。这些参数影响聚合物基质的形态（如 SEM 显微照片所示），它由相互连接的聚合物球形成。
