Cheng C.-C.Chang F.-C.Chen J.-K.Wang T.-Y.Lee D.-J.2019-05-142019-05-14201520462069https://scholars.lib.ntu.edu.tw/handle/123456789/408231Supramolecular 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. ? The Royal Society of Chemistry.journal article10.1039/c5ra23709b2-s2.0-84948656115https://www.scopus.com/inward/record.uri?eid=2-s2.0-84948656115&doi=10.1039%2fc5ra23709b&partnerID=40&md5=0698743d08bc4442e09cbd4f1c22b641