Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama, 226-8503, Japan.
Nat Commun. 2020 Nov 27;11(1):6061. doi: 10.1038/s41467-020-19886-4.
Linear alkanes are essential building blocks for natural and artificial assemblies in water. As compared with typical, linear alkane-based micelles and recent aromatic micelles, we herein develop a cycloalkane-based micelle, consisting of bent amphiphiles with two cyclohexyl frameworks. This uncommon type of micelle, with a spherical core diameter of ~ 2 nm, forms in water in a spontaneous and quantitative manner. The cycloalkane-based, hydrophobic cavity displays peculiar host abilities as follows: (i) highly efficient uptake of sterically demanding Zn(II)-tetraphenylporphyrin and rubrene dyes, (ii) selective uptake of substituted Cu(II)-phthalocyanines and spherical nanocarbons, and (iii) uptake-induced solution-state emission of [Au(I)-dimethylpyrazolate] in water. These host functions toward the large metal-complex and other guests studied herein remain unaccomplished by previously reported micelles and supramolecular containers.
线性烷烃是水相天然和人工组装体的重要构建基块。与典型的线性烷烃基胶束和最近的芳族胶束相比，我们在此开发了一种由具有两个环己基框架的弯曲两亲物组成的环烷烃基胶束。这种不常见类型的胶束具有约 2nm 的球形核直径，在水中自发且定量地形成。基于环烷烃的疏水性空腔具有以下特殊的主体能力：(i) 高效摄取空间位阻较大的 Zn(II)-四苯基卟啉和芘染料，(ii) 选择性摄取取代的 Cu(II)-酞菁和球形纳米碳，以及 (iii) 在水中摄取诱导的 [Au(I)-二甲基吡唑酸盐]溶液态发射。与之前报道的胶束和超分子容器相比，这种对本文研究的大金属配合物和其他客体的主体功能尚未实现。
