(Invited) Structural Analysis of Multifunctional Ionic Gels
(Invited) Structural Analysis of Multifunctional Ionic Gels
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DOI：
10.1149/08801.0427ecst
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发表时间：
2018-12
期刊：
影响因子：
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通讯作者：
Kumkum Ahmed;N. Naga;H. Furukawa
中科院分区：
文献类型：
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作者：
Kumkum Ahmed;N. Naga;H. Furukawa
离子液体(IL)介导的凝胶通常被称为离子凝胶或离子凝胶，由于其在电化学和机电设备中的先进应用而受到广泛的关注，如致动器、锂电池、双电层电容器、染料敏化太阳能电池和燃料电池。在这项工作中，我们通过硫醇-烯点击反应，在有机溶剂二甲基亚砜(DMSO)和IL，1-丁基-3-甲基咪唑双(氟磺酰基)亚胺(BMIm FSI)中研究了硫醇-烯交联凝胶的结构性质。通过杨氏模数压缩试验和扫描显微光散射(SMILS)技术测定网目尺寸的无损散射法估算网状链密度，研究了它们的力学性能和内部结构。凝胶的网孔密度高度依赖于硫醇化合物在IL和常规溶剂DMSO中的官能度。最后，我们比较了两种方法测定的网状链密度，并讨论了理解这些凝胶内部结构的假设。
Ionic liquid (IL) mediated gels commonly known as ion gels or ionic gels have received remarkable attention for their advanced application in electrochemical and electromechanical devices, such as actuators, lithium batteries, electric double-layer capacitors, dye-sensitized solar cells and fuel cells. In this work we focused to determine structural properties of thiol-ene crosslinked gels both in organic solvent dimethyl sulfoxide (DMSO) and IL, 1-butyl-3-methylimidazolium bis(fluorosulfonyl)imide (BMIm FSI) combining multifunctional thiol end-crosslinkers and diacrylate monomer via thiol-ene click reaction. We investigated their mechanical properties and internal structure by estimating mesh chain densities calculated from Young's modulus compression test and nondestructive scattering method of determining mesh size by scanning microscopic light scattering (SMILS) techniques respectively. The mesh densities of the gels were found to be highly dependent on the functionality of the thiol compound both in IL and conventional solvent, DMSO. Finally, we compared the mesh chain densities determined by the two methods and discussed the assumptions to understand the internal structure of these gels.