High-efficiency self-healing materials based on supramolecular polymer networks. Issue 122 (24th November 2015)

• Record Type: Journal Article
• Authors: Cheng, Chih-Chia; Chang, Feng-Chih; Chen, Jem-Kun; Wang, Tzu-Yin; Lee, Duu-Jong
• Is Part Of: RSC advances. Volume 5:Issue 122(2015)
• Page Start: 101148
• Page End: 101154
• Publication Date: 2015-11-24
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c5ra23709b
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : A new urea–cytosine-functionalized supramolecular polymer can be rapidly reshaped and reprocessed under mild conditions via rearrangement of the hydrogen bonding network. Abstract : Supramolecular polymers, a combination of secondary interactions and a polymer material, can be used to control supramolecular self-assembly in a polymeric matrix; these materials exhibit unique stimuli-responsiveness and self-healing properties making them highly attractive for various applications. Herein, we developed a novel supramolecular poly-urea containing a urea–cytosine (UrCy) quadruple hydrogen bonding moiety that undergoes a dynamic healing mechanism, "supramolecular polymer networks (SPN)", and rapidly repairs after damage under mild conditions. Interestingly, this newly-developed material can also self-heal at room temperature without external intervention, as evidenced by repeated restoration of mechanical properties. Given its simplicity, efficiency and reliability, this material offers a unique paradigm for developing SPN-based self-healing materials.