Reversible 2D pseudopolyrotaxanes based on cyclodextrins and cucurbit[6]uril
Reversible 2D pseudopolyrotaxanes based on cyclodextrins and cucurbit[6]uril
复制标题
基于环糊精和葫芦[6]脲的可逆二维拟聚轮烷
DOI：
10.1021/jo0617159
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发表时间：
2007-01-05
影响因子：
3.6
通讯作者：
Shi, Jun
中科院分区：
文献类型：
--
作者：
Liu, Yu;Ke, Chen-Feng;Shi, Jun
本文以葫芦b[6]为原料，与6-[（6-氨基己基）氨基]-6-脱氧- β -环糊精氯反应合成了一种伪环紫杉烷(2)。随后，通过α， ω - ppg2000二氨基聚合物穿过环糊精2的空腔，进一步组装成二维伪聚轮烷(3)，并通过FT-IR， NMR, TG-DTA，元素分析和透射电镜对所得伪聚轮烷进行了综合表征。值得注意的是，在碱存在的情况下，二维伪聚轮烷可以转变成主链伪聚轮烷，然后α -环糊精的加入可能导致两种不同的二维伪聚轮烷之间的可逆切换。
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.