期刊
CHEMICAL SCIENCE
卷 7, 期 7, 页码 4741-4747出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6sc00584e
关键词
-
资金
- National Science Foundation of China [51203086, 21274075]
- National 973 Project [2011CB935700]
Photo-active shape memory polymers (SMPs) are considered as a promising candidate for converting light into mechanical energy. However, most known SMPs are only thermo-responsive. To achieve photoactivity, photo-responsive choromophores or fillers usually have to be incorporated from the very beginning of the material synthesis. Here, we introduce a novel post-synthesis approach to endow normal SMPs with photo-active properties using mussel-inspired surface chemistry. Without changing the original properties, the resultant polydopamine (PDA) coated SMPs show an efficient photo-active performance. The coating can be easily patterned and erased, which allows flexible light-triggered 3-D shape deformation of a planar SMP sheet. Moreover, owing to the high chemical activity, the PDA coating also provides a platform to optimize the surface properties of the photo-responsive SMPs through secondary surface modification.
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