Pillar[5]arene Based [1]rotaxane Systems With Redox-Responsive Host-Guest Property: Design, Synthesis and the Key Role of Chain Length
Pillar[n]arenes are a new type of macrocyclic compounds, which were first reported in 2008 by Ogoshi. They not only have cylindrical, symmetrical, and rigid structures, but also have many advantages, including easy functionalization and rich host-guest properties. On the other hand, mechanically int...
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doaj-cbdf1b2f4be04447bfdf0885587f50c92020-11-25T02:34:41ZengFrontiers Media S.A.Frontiers in Chemistry2296-26462019-07-01710.3389/fchem.2019.00508470225Pillar[5]arene Based [1]rotaxane Systems With Redox-Responsive Host-Guest Property: Design, Synthesis and the Key Role of Chain LengthRunmiao Zhang0Runmiao Zhang1Chenwei Wang2Renhua Long3Tingting Chen4Chaoguo Yan5Yong Yao6College of Chemistry, Nantong University, Nantong, ChinaCollege of Chemistry, Yangzhou University, Yangzhou, ChinaCollege of Chemistry, Nantong University, Nantong, ChinaCollege of Chemistry, Nantong University, Nantong, ChinaCollege of Chemistry, Nantong University, Nantong, ChinaCollege of Chemistry, Yangzhou University, Yangzhou, ChinaCollege of Chemistry, Nantong University, Nantong, ChinaPillar[n]arenes are a new type of macrocyclic compounds, which were first reported in 2008 by Ogoshi. They not only have cylindrical, symmetrical, and rigid structures, but also have many advantages, including easy functionalization and rich host-guest properties. On the other hand, mechanically interlocked molecules (MIMs) exist extensively in nature which have been artificially synthesized and widely applied in the fields of nanotechnology and biology. Although pillar[5]arene-based MIMs have been investigated much over recent years, pillar[5]arene-based [1]rotaxanes are very limited. In this report, we synthesized a series of amide-linked pillar[5]arene-based [1]rotaxanes with ferrocene unit as the stopper. Under the catalysis of HOBT/EDCL, the mono-amido-functionalized pillar[5]arenes were amidated with ferrocene carboxylic acid to constructed ferrocene-based [1]rotaxanes, respectively. The structure of the [1]rotaxanes were characterized by 1H NMR, 13C NMR, 2D NMR, mass spectroscopy, and single-crystal X-ray structural determination. In the experiment, the monofunctionalized pillar[5]arene was synthesized with a self-inclusion property, which allows for forming a pseudo-rotaxane. The key role is the length of the imine chain in this process. The formation of a rotaxane was realized through amidation of ferrocene dicarboxylic acid, which acted as a plug. In addition, due to the ferrocene units, the pillar[5]arene-based [1]rotaxanes perform electrochemically reversible property. Based on this nature, we hope these pillar[5]arene-based [1]rotaxanes can be applied in battery devices in the future.https://www.frontiersin.org/article/10.3389/fchem.2019.00508/fullpillar[n]arenesrotaxaneselectrochemically reversiblesingle-crystal X-rayferrocene |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Runmiao Zhang Runmiao Zhang Chenwei Wang Renhua Long Tingting Chen Chaoguo Yan Yong Yao |
spellingShingle |
Runmiao Zhang Runmiao Zhang Chenwei Wang Renhua Long Tingting Chen Chaoguo Yan Yong Yao Pillar[5]arene Based [1]rotaxane Systems With Redox-Responsive Host-Guest Property: Design, Synthesis and the Key Role of Chain Length Frontiers in Chemistry pillar[n]arenes rotaxanes electrochemically reversible single-crystal X-ray ferrocene |
author_facet |
Runmiao Zhang Runmiao Zhang Chenwei Wang Renhua Long Tingting Chen Chaoguo Yan Yong Yao |
author_sort |
Runmiao Zhang |
title |
Pillar[5]arene Based [1]rotaxane Systems With Redox-Responsive Host-Guest Property: Design, Synthesis and the Key Role of Chain Length |
title_short |
Pillar[5]arene Based [1]rotaxane Systems With Redox-Responsive Host-Guest Property: Design, Synthesis and the Key Role of Chain Length |
title_full |
Pillar[5]arene Based [1]rotaxane Systems With Redox-Responsive Host-Guest Property: Design, Synthesis and the Key Role of Chain Length |
title_fullStr |
Pillar[5]arene Based [1]rotaxane Systems With Redox-Responsive Host-Guest Property: Design, Synthesis and the Key Role of Chain Length |
title_full_unstemmed |
Pillar[5]arene Based [1]rotaxane Systems With Redox-Responsive Host-Guest Property: Design, Synthesis and the Key Role of Chain Length |
title_sort |
pillar[5]arene based [1]rotaxane systems with redox-responsive host-guest property: design, synthesis and the key role of chain length |
publisher |
Frontiers Media S.A. |
series |
Frontiers in Chemistry |
issn |
2296-2646 |
publishDate |
2019-07-01 |
description |
Pillar[n]arenes are a new type of macrocyclic compounds, which were first reported in 2008 by Ogoshi. They not only have cylindrical, symmetrical, and rigid structures, but also have many advantages, including easy functionalization and rich host-guest properties. On the other hand, mechanically interlocked molecules (MIMs) exist extensively in nature which have been artificially synthesized and widely applied in the fields of nanotechnology and biology. Although pillar[5]arene-based MIMs have been investigated much over recent years, pillar[5]arene-based [1]rotaxanes are very limited. In this report, we synthesized a series of amide-linked pillar[5]arene-based [1]rotaxanes with ferrocene unit as the stopper. Under the catalysis of HOBT/EDCL, the mono-amido-functionalized pillar[5]arenes were amidated with ferrocene carboxylic acid to constructed ferrocene-based [1]rotaxanes, respectively. The structure of the [1]rotaxanes were characterized by 1H NMR, 13C NMR, 2D NMR, mass spectroscopy, and single-crystal X-ray structural determination. In the experiment, the monofunctionalized pillar[5]arene was synthesized with a self-inclusion property, which allows for forming a pseudo-rotaxane. The key role is the length of the imine chain in this process. The formation of a rotaxane was realized through amidation of ferrocene dicarboxylic acid, which acted as a plug. In addition, due to the ferrocene units, the pillar[5]arene-based [1]rotaxanes perform electrochemically reversible property. Based on this nature, we hope these pillar[5]arene-based [1]rotaxanes can be applied in battery devices in the future. |
topic |
pillar[n]arenes rotaxanes electrochemically reversible single-crystal X-ray ferrocene |
url |
https://www.frontiersin.org/article/10.3389/fchem.2019.00508/full |
work_keys_str_mv |
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