以具CTV單元之分子容器製作車輪烷分子的研究

Abstract

利用以環三聚藜烴為單元之分子容器1為主體，我們成功地利用具雙吡啶陽離子的桿狀分子與分子容器中兩個24員環開口端的辨識作用，在溶液中合成其相對應的車輪烷。將桿狀分子上的辨識中心轉變為尺寸較大的芳香環時，桿狀分子與分子容器經由相同反應所製作的車輪烷分子則是以穿隧分子容器上的一個24員環及其對面的34員環開口端為主。因此，利用不同桿狀分子穿隧分子容器之不同面向的開口端可達到控制不同種類車輪烷分子合成的目的。

The formation of pseudorotaxane complexes between cyclotriveratrylene-based molecular container and bipyridinium cation allowed us to synthesize the corresponding [2]rotaxane, in which the guest component penetrated two adjacent 24C8-like openings. Using similar synthetic approach but more sizable aromatic cation as the recognition unit, the guest components in the resulting [2]rotaxane penetrated one 24C8-like opening and its opposite 34-membered ring of the interlocked molecular container. Therefore, two types of guest complexation modes for molecular container were confirmed and the formation of their corresponding rotaxanes was realized.