期刊
ADVANCED FUNCTIONAL MATERIALS
卷 24, 期 9, 页码 1235-1242出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.201302058
关键词
polymerization; magnetic hyperthermia; supramolecular gels; self-healing; host-guest assembly
类别
资金
- National Natural Science Foundation of China [21006046, 21076103]
- Natural Science Foundation of Jiangsu [BK20131408]
- Natural Science Foundation for Jiangsu Higher Education Institutions of China [10KJB530006]
- National High Technology Research and Development Program of China (863 Program) [2012AA030313]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
Given the increasing environmental and energy issues, materials with the ability to repair themselves following damage are highly desirable because this self-healing property can prolong the lifespan of materials and reduce replacement costs. Host-guest assemblies are a powerful approach to create supramolecular materials with versatile functions. Here, a new mode of radical polymerization is demonstrated which is achieved via magnetocaloric effect to fabricate novel host-guest supramolecular gels within 5 min. The resulting gels can repair themselves spontaneously when damaged, without the assistance of any external stimuli, and possess great mechanical strength. Moreover, the Fe3O4-doped supramolecular gels show accelerated self-healing (from 24 h to 3 h) under an applied magnetic field, which is attributed to the synergy between host-guest healing and a magnetocaloric effect. This strategy might open a promising avenue for accelerating the use of host-guest assemblies to rapidly build robust materials.
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