Journal
ADVANCED FUNCTIONAL MATERIALS
Volume 29, Issue 16, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.201807858
Keywords
gel materials; reconfigurable surface topography; self-healing; unidirectional liquid transport; wettability transition
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Funding
- National Natural Science Funds for Distinguished Young Scholar [21725401]
- National Natural Science Foundation of China [21574004, 21703270]
- National Key R&D Program of China [2017YFA0207800, 2017YFA0206900, 2018YFA0208501]
- Fundamental Research Funds for the Central Universities
- National 'Young Thousand Talents Program'
- Academic Excellence Foundation of BUAA for PhD Students
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Adaptive materials with reconfigurable surface topography in response to external environments have attracted considerable attention in various fields. Here, adaptive superamphiphilic organohydrogels with reconfigurable surface topography are reported, featuring a high degree of freedom. The organohydrogels can simultaneously adapt to different surrounding mediums and reversibly switch between hydrogel- and organogel-dominated surface reconfigurations to realize adaptive superhydrophilic and superoleophilic transitions. Meanwhile, these adaptive organohydrogels possess a heteronetwork complementary effect to elicit surface self-healing capacity. Importantly, owing to these organohydrogels' reversible wettability transition, excellent surface morphing performance and bioinspired strategy, various geometrically complex biomimetic topographies can be programmed, offering unique unidirectional transport for opposite-featured liquids in multimedia environments. Smart organohydrogel-based microfluidic devices are also developed for on-demand remote programming of liquid transport. Therefore, the organohydrogels suggest a reconfigurable surface topography design strategy, and would act as adaptive programmable materials for smart surface applications.
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