Reversible 2D pseudopolyrotaxanes based on cyclodextrins and cucurbit[6]uril

被引：72
|
作者：
Liu, Yu [1 ]
Ke, Chen-Feng [1 ]
Zhang, Heng-Yi [1 ]
Wu, Wei-Jia [1 ]
Shi, Jun [1 ]
机构：
[1] Nankai Univ, Dept Chem, State Key Lab Elementoorgan Chem, Tianjin 300071, Peoples R China
来源：
JOURNAL OF ORGANIC CHEMISTRY | 2007年 / 72卷 / 01期
关键词：
D O I：
10.1021/jo0617159
中图分类号：
O62 [有机化学];
学科分类号：
070303 ; 081704 ;
摘要：
In this paper, a pseudorotaxane (2) was synthesized by reaction of cucurbit [6]uril with 6-[(6-aminohexyl)amino]-6-deoxy-beta-cyclodextrin chloride. Subsequently, pseudorotaxanes 2 were further assembled to form a 2D pseudopolyrotaxane (3) through an alpha,omega-PPG2000 diamino polymer threading the cavities of cyclodextrins in 2, and the resulting pseudopolyrotaxane was comprehensively characterized by FT-IR, NMR, TG-DTA, elemental analysis, and transmission electron microscopy. Significantly, the 2D pseudopolyrotaxane can turn into a main-chain pseudopolyrotaxane in the presence of base, and then the addition of alpha-cyclodextrins may result in a reversible switch between two different 2D pseudopolyrotaxanes.
引用
收藏
页码：280 / 283
页数：4
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