Long and rigid objects formed by self‐assembly in water are useful as templates or for their rheological or biological properties. They are usually obtained by combining hydrogen bonding and strong hydrophobic interactions brought by an alkyl or alkylene chain. A simple access to well‐defined rod‐like assemblies in water is reported based on a penta‐urea sticker directly connected to poly(ethylene oxide) side chains. These assemblies are characterized by an average length of several hundreds of nanometers and a monodisperse radius (4.5 nm) resulting from a reduced lateral aggregation of the stickers.

中文翻译：

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无亚烷基单元的低聚尿素可自组装成水中的杆状物体

通过自组装在水中形成的长而刚性的物体可用作模板或具有其流变学或生物学特性。它们通常是通过结合氢键和烷基或亚烷基链带来的强疏水相互作用而获得的。据报道，通过直接连接到聚环氧乙烷侧链的五脲标签，可以轻松访问水中定义明确的杆状组件。这些组件的特点是平均长度为数百纳米，并且由于减少了粘贴物的横向聚集而产生了单分散半径（4.5 nm）。