Please use this identifier to cite or link to this item:
Main Title: Self-recovering stimuli-responsive macrocycle-equipped supramolecular ionogels with unusual mechanical properties
Author(s): Qi, Zhenhui
Traulsen, Nora L.
Molina, Paula Malo de
Schlaich, Christoph
Gradzielski, Michael
Schalley, Christoph A.
Type: Article
Language Code: en
Abstract: A chiral, crown-ether-functionalized bisurea gelator forms supramolecular gels in ionic liquids. The resulting ionogels show a remarkably high thermal stability with gel–sol transition temperatures (Tgs) reaching more than 100 °C. The mechanical strength of these ionogels is surprisingly high and even comparable to that of cross-linked protein fibres. Furthermore, the ionogels exhibit rapid self-recovery properties after structural damage caused by deformation. Pseudorotaxanes form from the gelators’ benzo[21]crown-7 ethers as the wheels and secondary ammonium ions as the axles despite the competition between that cation and the imidazolium ions of the ionic liquid for crown ether binding. Pseudorotaxane formation as an external chemical stimulus triggers the gel–sol transition of the ionogels.
Issue Date: 2014
Date Available: 21-Jun-2016
DDC Class: 540 Chemie und zugeordnete Wissenschaften
Sponsor/Funder: DFG, SFB 765, Multivalenz als chemisches Organisations- und Wirkprinzip: Neue Architekturen, Funktionen und Anwendungen
Journal Title: Organic & biomolecular chemistry : OBC
Publisher: Royal Society of Chemistry
Publisher Place: Cambridge
Volume: 12
Issue: 3
Publisher DOI: 10.1039/c3ob41523f
Page Start: 503
Page End: 510
EISSN: 1477-0539
ISSN: 1477-0520
Notes: Dieser Beitrag ist mit Zustimmung des Rechteinhabers aufgrund einer (DFG geförderten) Allianz- bzw. Nationallizenz frei zugänglich.
This publication is with permission of the rights owner freely accessible due to an Alliance licence and a national licence (funded by the DFG, German Research Foundation) respectively.
Appears in Collections:Inst. Chemie » Publications

Files in This Item:
File Description SizeFormat 
c3ob41523f.pdf1.74 MBAdobe PDFThumbnail

Items in DepositOnce are protected by copyright, with all rights reserved, unless otherwise indicated.