Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 13, Issue 1, Pages 1704-1713Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.0c15099
Keywords
surface patterns; light-induced; 2D ordered patterns; programmable control; hierarchical film
Funding
- National Nature Science Foundation of China [51773114, 21704062]
- China Postdoctoral Science Foundation [2017M611544]
- Shanghai Municipal Government [17JC1400700]
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By combining the stimuli-responsiveness and UV sensitivity of hPEA-AN with the excellent out-of-plane deformation and NIR-to-thermal conversion of graphene, dynamic wrinkling/ordered patterning can be achieved to globally program 2D ordered surface patterns according to demand.
Dynamic complex surface topography with ordered and tunable morphologies, which can provide on-demand control of surface properties to realize smart surfaces, is gaining much attention yet remains challenging in terms of fabrication. Here, a facile, robust, and controllable method is demonstrated to fabricate programmable two-dimensional (2D) ordered patterns with multiresponsive 2D ultrathin materials, comprised of anthracene-capped hyperbranched poly(ether amine) (hPEA-AN)-functionalized graphene (hPEA-AN@G). By combining the stimuli-responsiveness and UV sensitivity of hPEA-AN and excellent out-of-plane deformation and NIR-to-thermal conversion of graphene, the process of writing/uploading initial information is conducted through the initial exposure to 365 nm UV light to generate the 2D ordered pattern first; second, inducing swelling strain via moisture to create the hierarchical topographic pattern (orderly oriented pattern) is the process of modification and erasable rewriting; third, alternating NIR or 254 nm UV light blanket exposure are the two ways of erasing the information. Consequently, taking advantage of the multiresponsive dynamic wrinkling/ordered patterning, we can program globally 2D ordered surface patterns with diverse morphologies on demand and manipulate the resulted surface properties as desired.
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