.png){kind=icon}
返回
A solvent-driven molecular spring
.png){kind=icon}
PRE
AI
DOI：10.1039/c2sc20728a.png)
.png){kind=icon}
.png){kind=icon}
分享.png){kind=icon}
收藏
摘要
En 中文
A solvent-driven doubly threaded rotaxane dimer based on an amino-modified copillar[5]arene was prepared using bis(trifluoromethyl)phenyl isocyanate as stoppers. By comparison of proton NMR spectra of the rotaxane dimer and the control compound, the inclusion-induced shielding effects of the decyl protons of the dumbbell compound were estimated. From the crystal structures of previously reported analogous pillar[5]arene/alkane pseudorotaxanes, we know that four methylenes can be totally encapsulated in the pillar[5]arene cavity. When a pillar[5]arene is swaying along a guest with a long linear alkyl chain (more than four methylenes), its cavity statistically locates on the four methylenes whose protons showed relatively larger upfield shifts. Based on this, the length of the rotaxane dimer can be estimated. In CDCl3, it was in a contracted state with a length of 31 angstrom. In DMSO-d(6), it was in a extended state with a length of 37 angstrom. Moreover, as the polarity of the solvent is changing, the length of the rotaxane dimer can change continuously as the contraction/stretching systems work in living organisms. Therefore, we can control the length of this molecular spring as needed.
Keyword:
COMPLEXATION
TITIN
HOST
DIMER
COOLIGOMERIZATION
TRANSDUCTION
RECEPTOR
MUSCLES
LIGHT
STATE
AI总结
对已上传原文的论文进行重点信息的提取，主要内容包括：简要概述、研究摘要、背景介绍、关键亮点、图文解析、展望与总结。
期刊
IF:
7.4
论文数:
1.8W
被引数:
9.4W
机构
引用论文
Nucleotide-dependent conformational changes in dynamin: evidence for a mechanochemical molecular spring.png)
NATURE CELL BIOLOGY
NATURE CELL BIOLOGYIF19.1
PREAI
分享收藏
para-bridged symmetrical pillar[5]arenes:: Their Lewis acid catalyzed synthesis and host-guest property对位桥连对称柱 [5] 芳烃:: 它们的路易斯酸催化合成和主客体性质
PREAI
分享收藏
查看更多内容