Photoinduced Reversible Morphological Transformation of Azobenzene‐Containing Pseudo‐2D Polymers. Issue 11 (2nd May 2018)

• Record Type: Journal Article
• Authors: Li, Zili; Tang, Miao; Jiang, Chen; Bai, Ruke; Bai, Wei
• Is Part Of: Macromolecular rapid communications. Volume 39:Issue 11(2018)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2018-05-02
• Subjects: 2D polymer sheets -- 2D self‐assembly polymerization (2DSP) -- photoresponsivity -- reversible morphological transformation -- rolled‐up nanotubes; Macromolecules -- Periodicals; Polymers -- Periodicals; Chemistry -- Periodicals; 547.705
• DOI: 10.1002/marc.201700880
• Languages: English
• ISSNs: 1022-1336

Abstract

Abstract: 2D polymer sheets containing azobenzene are successfully prepared by a facile strategy of "2D self‐assembly polymerization (2DSP)" via free radical polymerization in solution. A bola amphiphile containing azobenzene as a novel monomer is designed and synthesized. The results indicate that single‐layer covalent pseudo‐2D polymers on a micrometer scale are obtained after polymerization with vinyl monomers. Moreover, the 2D polymer sheets are highly sensitive to UV light due to incorporation of azobenzene groups into the polymer. Upon alternative irradiation with UV and visible light, the morphological transformation between sheets and rolled‐up nanotubes can be achieved based on the reversible trans ‐to‐ cis photoisomerization of azobenzene units in the 2D polymer sheets. Abstract : Photosensitive pseudo‐2D polymer containing azobenzene is prepared through "2D self‐assembly polymerization (2DSP)" strategy, which exhibits reversible morphological transformation between sheet and rolled‐up nanotube upon light stimuli.