Journal
SCIENCE
Volume 330, Issue 6005, Pages 808-811Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.1195302
Keywords
-
Categories
Funding
- Japan Society for the Promotion of Science
- Ministry of Education, Culture, Sports, Science, and Technology, Japan [21350108]
- Grants-in-Aid for Scientific Research [21350108] Funding Source: KAKEN
Ask authors/readers for more resources
Rational molecular design and processing, enabling large-area molecular ordering, are important for creating high-performance organic materials and devices. We show that, upon one-step hot-pressing with uniaxially stretched Teflon sheets, a polymer brush carrying azobenzene-containing mesogenic side chains self-assembles into a freestanding film, where the polymer backbone aligns homeotropically to the film plane and the side chains align horizontally. Such an ordered structure forms through translation of a one-dimensional molecular order of the Teflon sheet and propagates from the interface macroscopically on both sides of the film. The resultant wide-area bimorph configuration allows the polymer film to bend rapidly and reversibly when the azobenzene units are photoisomerized. The combination of polymer brushes with hot-pressing and Teflon sheets provides many possibilities in designing functional soft materials.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available