Coumarin derivative trigger controlled photo-healing of ion gels and photo-controlled reversible adhesiveness

Wang, LeiCollege of Science, Nanjing Forestry University, Nanjing 210037, PR China (författare)

Validerad;2021;Nivå 2;2021-01-12 (alebob);Finansiär: National Natural Science Foundation of China (51775282), Priority Academic Program Development of Jiangsu Higher Education Institutions
Fabrication strategies for photo-responsive ion gels have attracted attention owing to their precise spatial and temporal control with predetermined responses to light stimuli. In this work, a reversible light-driven method was introduced to devise photo-responsive ion gels by harnessing coumarin-based building blocks under 365 nm irradiation. A series of random copolymers composed of N, N-dimethylacrylamide (DMA) and 7-(2′-methacryloyloxyethoxy)–4-methylcoumarin (MAOEMC), namely P(DMA-r-MAOEMC), were synthesized through reversible addition-fragmentation chain transfer (RAFT) polymerization with sufficient molecular weight (≈100 kDa). The coumarin moieties in those polymers exhibited a reversible photo-induced dimerization and photocleavage behavior in 1-ethyl-3-methylimidazolium bis (trifluoromethylsufonyl) imide ([C2mim][NTf2]). Those polymers - ionic liquid system at high polymer concentration (20 wt%) under suitable wavelength UV light irradiation led to sol–gel transition, which could be functionalized as photo-healable material and photo-controlled adhesion agents. Notably, the photo-controlled adhesiveness was reversible and can be mediated from 1.2 MPa to 0.2 MPa. This work opens new avenues to develop multifunctional ion gels using dynamic covalent bonds.

Ma, XiaofengCollege of Science, Nanjing Forestry University, Nanjing 210037, PR China; Institute of Polymer Materials, Nanjing Forestry University, Nanjing 210037, PR China (författare)
Wu, LinlinCollege of Materials Science and Engineering, Nanjing Tech University, Nanjing 210009, PR China (författare)
Sha, YeCollege of Science, Nanjing Forestry University, Nanjing 210037, PR China (författare)
Yu, BoCollege of Science, Nanjing Forestry University, Nanjing 210037, PR China (författare)
Lan, XiaoyuCollege of Science, Nanjing Forestry University, Nanjing 210037, PR China (författare)
Luo, YanlongCollege of Science, Nanjing Forestry University, Nanjing 210037, PR China; Institute of Polymer Materials, Nanjing Forestry University, Nanjing 210037, PR China (författare)
Shi, YijunLuleå tekniska universitet,Maskinelement(Swepub:ltu)yijshi (författare)
Wang, YanJiangsu Product Quality Testing & Inspection Institute, Nanjing 210007, PR China (författare)
Luo, ZhenyangCollege of Science, Nanjing Forestry University, Nanjing 210037, PR China; Institute of Polymer Materials, Nanjing Forestry University, Nanjing 210037, PR China (författare)
College of Science, Nanjing Forestry University, Nanjing 210037, PR ChinaCollege of Science, Nanjing Forestry University, Nanjing 210037, PR China; Institute of Polymer Materials, Nanjing Forestry University, Nanjing 210037, PR China (creator_code:org_t)

Av författaren/redakt...: Wang, Lei; Ma, Xiaofeng; Wu, Linlin; Sha, Ye; Yu, Bo; Lan, Xiaoyu; visa fler...; Luo, Yanlong; Shi, Yijun; Wang, Yan; Luo, Zhenyang; visa färre...

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