To develop new hybrid micelles with alkyl/polyaromatic core‐shell structures, we synthesized umbrella‐shaped amphiphiles bearing a bent anthracene dimer with a linear alkyl chain (i.e., octyl and hexadecyl groups). The amphiphiles quantitatively assemble into spherical micelles (~2‐3 nm in core diameter), possessing an alkylated cavity surrounded by a polyaromatic framework, in water. The alkylation significantly enhances the stability of the micellar structures against dilution (up to 9 μM) and heat (up to >120 ºC). The highly condensed hexadecyl core of the hybrid micelle, as indicated by solvatochromic guest probes, displays increased uptake ability toward large alkylated metallodyes. Interestingly, efficient uptake of aromatic macrocycles (i.e., [n]cycloparaphenylenes) by the present micelle provides pseudorotaxane‐shaped host‐guest composites with high emissivity (ФF = up to 35%). Internal multi‐alkylation of an aromatic micelle can thus successfully enhance its assembly stability/guest uptake functions.

中文翻译：

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伞形两亲物：芳香胶束的内部烷基化及其对空腔特征的影响

为了开发具有烷基/多芳香族核壳结构的新型杂化胶束，我们合成了带有具有线性烷基链（即辛基和十六烷基）的弯曲蒽二聚体的伞形两亲物。两亲物在水中定量组装成球形胶束（核心直径约 2-3 nm），具有被聚芳香族骨架包围的烷基化空腔。烷基化显着增强了胶束结构对稀释（高达 9 μM）和热（高达 >120 ℃）的稳定性。溶剂化显色客体探针表明，混合胶束的高度浓缩的十六烷基核心表现出对大烷基化金属染料的吸收能力增强。有趣的是，本胶束对芳香大环化合物（即[n]环对亚苯基）的有效吸收提供了具有高发射率（ФF =高达35％）的拟轮烷形主客体复合材料。因此，芳香胶束的内部多烷基化可以成功地增强其组装稳定性/客体吸收功能。