Discrete Molecular Recognition Induced Higher-Order Structures: Fibrous Formation Triggered by Melamine Recognition with a Cationic Ethynylpyridine Macrocyclic Host
Discrete Molecular Recognition Induced Higher-Order Structures: Fibrous Formation Triggered by Melamine Recognition with a Cationic Ethynylpyridine Macrocyclic Host
复制标题
离散分子识别诱导的高阶结构：阳离子乙炔基吡啶大环主体的三聚氰胺识别引发纤维形成
DOI：
10.1021/acs.orglett.5b03502
复制
发表时间：
2016
期刊：
影响因子：
5.2
通讯作者：
M.
中科院分区：
文献类型：
--
作者：
Suzuki;D.; Abe;H.; Inouye;M.
通过在2，6-/3，5-取代乙炔基吡啶大环的3个3，5-亚吡啶基的氮原子上进行甲基化，得到了一种三阳离子形状稳定的大环。三聚氰胺在极性溶剂如DMSO和水的大环识别，并在水中的主客体协会诱导的紫外可见滴定和动态光散射实验证实了高阶聚集体。扫描电子显微镜、透射电子显微镜和原子力显微镜表明，纤维状网络结构是由大环化合物和三聚氰胺复合物的堆积形成的。
A tricationic shape-persistent macrocycle was obtained by methylation on the nitrogen atoms of the three 3,5-pyridylene groups of an alternating 2,6-/3,5-substituted ethynylpyridine macrocycle. The tricationic macrocycle recognized melamine in polar solvents such as DMSO and water, and the host–guest association in water induced a higher-order aggregate confirmed by UV–vis titration and dynamic light scattering experiments. Scanning electron microscopy, transmission electron microscopy, and atomic force microscopy indicated that fibrous network structures resulted from the stacking of the macrocycle and melamine complex.