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Hierarchical Self‐Assembly in Liquid‐Crystalline Block Copolymers Enabled by Chirality Transfer

Helical topological structures are often found in chiral biological systems, but seldom in synthesized polymers. Now, controllable microphase separation of amphiphilic liquid‐crystalline block copolymers (LCBCs) consisting of hydrophilic poly(ethylene oxide) and hydrophobic azobenzene‐containing pol... Full description

Journal Title: Angewandte Chemie 17 September 2018, Vol.130(38), pp.12704-12708
Main Author: Huang, Shuai
Other Authors: Chen, Yuxuan , Ma, Shudeng , Yu, Haifeng
Format: Electronic Article Electronic Article
Language: English
Subjects:
ID: ISSN: 0044-8249 ; E-ISSN: 1521-3757 ; DOI: 10.1002/ange.201807379
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recordid: wj10.1002/ange.201807379
title: Hierarchical Self‐Assembly in Liquid‐Crystalline Block Copolymers Enabled by Chirality Transfer
format: Article
creator:
  • Huang, Shuai
  • Chen, Yuxuan
  • Ma, Shudeng
  • Yu, Haifeng
subjects:
  • Aggregationschiralität
  • Chiralitätstransfer
  • Flüssigkristalline Blockcopolymere
  • Helicale Phasen
  • Mikrophasentrennung
ispartof: Angewandte Chemie, 17 September 2018, Vol.130(38), pp.12704-12708
description: Helical topological structures are often found in chiral biological systems, but seldom in synthesized polymers. Now, controllable microphase separation of amphiphilic liquid‐crystalline block copolymers (LCBCs) consisting of hydrophilic poly(ethylene oxide) and hydrophobic azobenzene‐containing poly(methylacrylate) is combined with chirality transfer to fabricate helical nanostructures by doping with chiral additives (enantiopure tartaric acid). Through hydrogen‐bonding interactions, chirality is transferred from the dopant to the aggregation, which directs the hierarchical self‐assembly in the composite system. Upon optimized annealing condition, helical structures in film are fabricated by the induced aggregation chirality. The photoresponsive azobenzene mesogens in the LCBC assist photoregulation of the self‐assembled helical morphologies. This allows the construction and non‐contact manipulation of complicated nanostructures. eines Weinsäure‐dotierten flüssigkristallinen Blockcopolymers zeigt Aggregationschiralität, wenn über H‐Brücken ein Chiralitätstransfer von der Neben‐ zur Hauptphase bewerkstelligt wird – durch Optimierung der Temperbedingungen und Dotandmenge. Eine reversible Photomanipulation der Aggregationschiralität gelingt durch photoinduzierten Phasenübergang der Azobenzolmesogene und supramolekulare kooperative Bewegung.
language: eng
source:
identifier: ISSN: 0044-8249 ; E-ISSN: 1521-3757 ; DOI: 10.1002/ange.201807379
fulltext: fulltext
issn:
  • 0044-8249
  • 00448249
  • 1521-3757
  • 15213757
url: Link


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titleHierarchical Self‐Assembly in Liquid‐Crystalline Block Copolymers Enabled by Chirality Transfer
creatorHuang, Shuai ; Chen, Yuxuan ; Ma, Shudeng ; Yu, Haifeng
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subjectAggregationschiralität ; Chiralitätstransfer ; Flüssigkristalline Blockcopolymere ; Helicale Phasen ; Mikrophasentrennung
descriptionHelical topological structures are often found in chiral biological systems, but seldom in synthesized polymers. Now, controllable microphase separation of amphiphilic liquid‐crystalline block copolymers (LCBCs) consisting of hydrophilic poly(ethylene oxide) and hydrophobic azobenzene‐containing poly(methylacrylate) is combined with chirality transfer to fabricate helical nanostructures by doping with chiral additives (enantiopure tartaric acid). Through hydrogen‐bonding interactions, chirality is transferred from the dopant to the aggregation, which directs the hierarchical self‐assembly in the composite system. Upon optimized annealing condition, helical structures in film are fabricated by the induced aggregation chirality. The photoresponsive azobenzene mesogens in the LCBC assist photoregulation of the self‐assembled helical morphologies. This allows the construction and non‐contact manipulation of complicated nanostructures. eines Weinsäure‐dotierten flüssigkristallinen Blockcopolymers zeigt Aggregationschiralität, wenn über H‐Brücken ein Chiralitätstransfer von der Neben‐ zur Hauptphase bewerkstelligt wird – durch Optimierung der Temperbedingungen und Dotandmenge. Eine reversible Photomanipulation der Aggregationschiralität gelingt durch photoinduzierten Phasenübergang der Azobenzolmesogene und supramolekulare kooperative Bewegung.
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descriptionHelical topological structures are often found in chiral biological systems, but seldom in synthesized polymers. Now, controllable microphase separation of amphiphilic liquid‐crystalline block copolymers (LCBCs) consisting of hydrophilic poly(ethylene oxide) and hydrophobic azobenzene‐containing poly(methylacrylate) is combined with chirality transfer to fabricate helical nanostructures by doping with chiral additives (enantiopure tartaric acid). Through hydrogen‐bonding interactions, chirality is transferred from the dopant to the aggregation, which directs the hierarchical self‐assembly in the composite system. Upon optimized annealing condition, helical structures in film are fabricated by the induced aggregation chirality. The photoresponsive azobenzene mesogens in the LCBC assist photoregulation of the self‐assembled helical morphologies. This allows the construction and non‐contact manipulation of complicated nanostructures. eines Weinsäure‐dotierten flüssigkristallinen Blockcopolymers zeigt Aggregationschiralität, wenn über H‐Brücken ein Chiralitätstransfer von der Neben‐ zur Hauptphase bewerkstelligt wird – durch Optimierung der Temperbedingungen und Dotandmenge. Eine reversible Photomanipulation der Aggregationschiralität gelingt durch photoinduzierten Phasenübergang der Azobenzolmesogene und supramolekulare kooperative Bewegung.
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abstractHelical topological structures are often found in chiral biological systems, but seldom in synthesized polymers. Now, controllable microphase separation of amphiphilic liquid‐crystalline block copolymers (LCBCs) consisting of hydrophilic poly(ethylene oxide) and hydrophobic azobenzene‐containing poly(methylacrylate) is combined with chirality transfer to fabricate helical nanostructures by doping with chiral additives (enantiopure tartaric acid). Through hydrogen‐bonding interactions, chirality is transferred from the dopant to the aggregation, which directs the hierarchical self‐assembly in the composite system. Upon optimized annealing condition, helical structures in film are fabricated by the induced aggregation chirality. The photoresponsive azobenzene mesogens in the LCBC assist photoregulation of the self‐assembled helical morphologies. This allows the construction and non‐contact manipulation of complicated nanostructures. eines Weinsäure‐dotierten flüssigkristallinen Blockcopolymers zeigt Aggregationschiralität, wenn über H‐Brücken ein Chiralitätstransfer von der Neben‐ zur Hauptphase bewerkstelligt wird – durch Optimierung der Temperbedingungen und Dotandmenge. Eine reversible Photomanipulation der Aggregationschiralität gelingt durch photoinduzierten Phasenübergang der Azobenzolmesogene und supramolekulare kooperative Bewegung.
doi10.1002/ange.201807379
pages12704-12708
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date2018-09-17