Dynamic Ion Gels from the Complex Coacervation of Oppositely Charged Poly(ionic liquid)s,ACS Macro Letters

当前位置： X-MOL 学术 › ACS Macro Lett. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Dynamic Ion Gels from the Complex Coacervation of Oppositely Charged Poly(ionic liquid)s
ACS Macro Letters ( IF 5.1 ) Pub Date : 2024-07-11 , DOI: 10.1021/acsmacrolett.4c00253
Malak Alaa Eddine ₁ , Daniil R Nosov _{2,

3} , Luiz Fernando Lepre ₁ , Anatoli Serghei ₁ , Daniel F Schmidt ₂ , Damien Montarnal ₄ , Alexander S Shaplov ₂ , Eric Drockenmuller ₁

Affiliation

A cationic poly(ionic liquid) (PIL) with pendent butyl imidazolium cations and free bis(trifluoromethylsulfonyl)imide (TFSI) anions and an anionic PIL with pendent TFSI anions and free 1-butyl-3-methylimidazolium cations are synthesized by postpolymerization chemical modification and reversible addition–fragmentation chain-transfer radical copolymerization, respectively. Upon mixing solutions of these two PILs in acetone with stoichiometric amounts of ion pairs, ionic exchanges induce coacervation and, after solvent evaporation, lead to the formation of a dynamic ion gel (DIG) and the concomitant release of free [1-methyl-3-butyl imidazolium]TFSI ionic liquid (IL). A comparison of thermal (T_g), ion conducting (σ_DC), and viscoelastic (elastic moduli (G′)) properties for DIGs and their parent polyelectrolytes, as well as extracted and IL-doped DIGs, demonstrates the formation of ionic cross-links and the ability to easily produce polymer electrolytes with enhanced ionic conductivity (σ_DC up to 4.5 × 10^–5 S cm^–1 at 30 °C) and higher elastic moduli (G′ up to 4 kPa at 25 °C and 1 rad s^–1), making them highly desirable in many electrochemical applications, including supercapacitors, soft robotics, electrochromic devices, sensors, and solar cells.

中文翻译：

来自带相反电荷的聚（离子液体）的复杂凝聚的动态离子凝胶

通过聚合后化学改性合成了带有丁基咪唑鎓阳离子和游离双(三氟甲基磺酰基)亚胺(TFSI)阴离子的阳离子聚离子液体(PIL)和带有TFSI阴离子和游离1-丁基-3-甲基咪唑鎓阳离子的阴离子PIL分别是可逆加成-断裂链转移自由基共聚。将这两种 PIL 的丙酮溶液与化学计量的离子对混合后，离子交换会引起凝聚，并在溶剂蒸发后形成动态离子凝胶 (DIG)，并同时释放游离的 [1-methyl-3]。 [-丁基咪唑鎓]TFSI离子液体(IL)。 DIG 及其母体聚电解质以及提取的和 IL 掺杂的 DIG 的热 ( T _g )、离子传导 (σ _DC ) 和粘弹性（弹性模量 ( G ')）特性的比较表明了离子交叉的形成-链接和轻松生产聚合物电解质的能力，具有增强的离子电导率（30°C 时σ _DC高达 4.5 × 10 ^–5 S cm ^–1 ）和更高的弹性模量（25°C 时G ' 高达 4 kPa，1 rad s ^–1 )，使其在许多电化学应用中非常受欢迎，包括超级电容器、软机器人、电致变色器件、传感器和太阳能电池。

更新日期：2024-07-11

点击分享查看原文

点击收藏

公开下载

阅读更多本刊新发论文本刊介绍/投稿指南