The cover image from David Suleiman and colleagues shows polymeric ionic liquids or poly(ionic liquid)s (PIL's) sandwiched between different layers of clothing for chemical protective clothing applications. The goal is to block the transport of toxic chemicals while allowing perspiration to permeate throughout the membrane. Different alkyl groups and sulfonation levels produce unique morphologies (optical microscopy images) and hydrophilic nanochannels, resulting in different vapor-phase permeabilities and high selectivities. The article on page 1919 provides more details. (DOI: 10.1002/pol.20210214)

中文翻译：

---

封面

David Suleiman 及其同事的封面图片显示了聚合物离子液体或聚（离子液体）（PIL）夹在不同层的衣服之间，用于化学防护服应用。目标是阻止有毒化学物质的传输，同时允许汗水渗透整个膜。不同的烷基和磺化水平会产生独特的形态（光学显微镜图像）和亲水性纳米通道，从而产生不同的气相渗透率和高选择性。第 1919 页上的文章提供了更多详细信息。（DOI：10.1002/pol.20210214）