Designing Imidazolium Poly(amide-amide) and Poly(amide-imide) Ionenes and Their Interactions with Mono- and Tris(imidazolium) Ionic Liquids
Designing Imidazolium Poly(amide-amide) and Poly(amide-imide) Ionenes and Their Interactions with Mono- and Tris(imidazolium) Ionic Liquids
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DOI：
10.3390/polym12061254
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发表时间：
2020-06-01
期刊：
影响因子：
5
通讯作者：
Bara, Jason E.
中科院分区：
文献类型：
--
作者：
O'Harra, Kathryn E.;Noll, Danielle M.;Bara, Jason E.
在这里，我们介绍了一系列具有酰胺-酰胺或酰胺-酰亚胺主链功能的复杂的咪唑类离子烯的合成和热性质，并考察了单咪唑离子液体和前所未有的三咪唑离子液体(ILS)在这些离子烯中的结构效应。新的聚酰胺-酰胺(PAA)和聚酰胺-酰亚胺(PAI)离子烯代表了传统的高性能聚合物和呈现离子烯原型的聚合物的交集，沿着主干交替的功能和离子元素被精确测序。分析了聚合物组成对热性能和形态的影响。合成了5个不同的聚合物骨架，并将其与化学计量当量的IL-1-苄基-3-甲基咪唑双氢呋喃([Bnmim][Tf2N])结合，研究了IL加入时分子间作用力的自组装、结构和贡献。此外，三个具有较简单木基连接的聚酰胺(PA)或聚酰亚胺(PI)离子烯与[Bnmim][Tf2N]以及一种新型的酰胺连接的三(咪唑)离子离子相互作用，证明了分散在离子烯基质中的功能离子添加剂的加入所带来的结构变化。这项工作突出了利用展示超分子自组装的小分子的概念来指导创造性设计和操纵电离烯结构的可能性。
Here we introduce the synthesis and thermal properties of a series of sophisticated imidazolium ionenes with alternating amide-amide or amide-imide backbone functionality, and investigate the structural effects of mono(imidazolium) and unprecedented tris(imidazolium) ionic liquids (ILs) in these ionenes. The new set of poly(amide-amide) (PAA) and poly(amide-imide) (PAI) ionenes represent the intersection of conventional high-performance polymers with the ionene archetype-presenting polymers with alternating functional and ionic elements precisely sequenced along the backbone. The effects of polymer composition on the thermal properties and morphology were analyzed. Five distinct polymer backbones were synthesized and combined with a stoichiometric equivalent of the IL 1-benzyl-3-methylimidazolium bistriflimide ([Bnmim][Tf2N]), which were studied to probe the self-assembly, structuring, and contributions of intermolecular forces when IL is added. Furthermore, three polyamide (PA) or polyimide (PI) ionenes with simpler xylyl linkages were interfaced with [Bnmim][Tf2N] as well as a novel amide-linked tris(imidazolium) IL, to demonstrate the structural changes imparted by the inclusion of functional, ionic additives dispersed within the ionene matrix. This work highlights the possibilities for utilizing concepts from small molecules which exhibit supramolecular self-assembly to guide creative design and manipulate the structuring of ionenes.