Network Formation in an Orthogonally Self-Assembling System

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• 作者：Tristan Mes ; Marcel M. E. Koenigs ; Vincent F. Scalfani ; Travis S. Bailey ; E. W. Meijer ; Anja R. A. Palmans
• 刊名：ACS Macro Letters
• 出版年：2012
• 出版时间：January 17, 2012
• 年：2012
• 卷：1
• 期：1
• 页码：105-109
• 全文大小：263K
• 年卷期：v.1,no.1(January 17, 2012)
• ISSN：2161-1653

文摘

Many supramolecular motifs self-assemble into nanorods, forming the basis of the mechanical properties of supramolecular polymers. When integrated as end-caps in a bifunctional telechelic polymer, the motifs can phase segregate into the same or into another nanorod. In the latter case, a functional cross-link is formed by the bridging chain that strengthens the polymer network. This study introduces a supramolecular polymeric system that consists of two different nanorod forming supramolecular motifs. When end-capped to monofunctional polymers, these supramolecular motifs self-assemble in an orthogonal fashion in two separate types of noncross-linked nanorods, resulting in a viscous liquid lacking macroscopic properties. The addition of 15 mol % of an 伪,蠅-telechelic polymer containing both supramolecular motifs, each on one end, transforms this viscous sticky liquid to a solid material with elastomeric properties due to network formation between the two types of nanorods.