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题名: Construction of Smart Supramolecular Polymeric Hydrogels Cross linked by Discrete Organoplatinum(II) Metallacycles via Post Assembly Polymerization
作者: Zheng, Wei1; Chen, Li-Jun1; Yang, Guang2, 3; Sun, Bin1, 5, 6; Wang, Xu5, 6; Jiang, Bo1; Yin, Guang-Qiang1; Zhang, Li4; Li, Xiaopeng5, 6; Liu, Minghua4; Chen, Guosong2, 3; Yang, Hai-Bo1
刊名: JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
发表日期: 2016-04-13
卷: 138, 期:14, 页:4927-4937
收录类别: SCI
英文摘要: Postassembly modification strategy has been successfully employed in the construction of discrete metallosupramolecular assemblies. However, the most known reports have been limited to the simple structural conversion through the easy covalent reactions, thus hindering the development of organometallic functional materials. In this study, we first combined coordination-driven self-assembly and postassembly reversible addition fragmentation chain-transfer (RAFT) polymerization to produce a new family of star supramolecular polymers containing well-defined metallacycles as cores, which featured typical lower critical solution temperature (LCST) behavior in water because of the existence of poly(N-isopropylacrylamide) (PNIPAAM) moieties. Moreover, the obtained star polymers could further form supramolecular hydrogels cross-linked by discrete hexagonal metallacycles at room temperature without heating-cooling process. Interestingly, the resultant polymeric hydrogels exhibited stimuli-responsive behavior toward temperature and bromide anion as well as self-healing property. We demonstrated that the dynamic nature of Pt-N bonds in the hexagonal metallacycles played an important role in determining the stimuli-responsive and self-healing property of the final soft matters. Thus, merging coordination-driven self-assembly and postassembly polymerization provided a new avenue to the preparation of functional materials containing well-defined, discrete metal-organic assemblies as main scaffolds.
语种: 英语
内容类型: 期刊论文
URI标识: http://ir.iccas.ac.cn/handle/121111/36022
Appears in Collections:胶体、界面与化学热力学实验室_期刊论文

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作者单位: 1.E China Normal Univ, Sch Chem & Mol Engn, Shanghai Key Lab Green Chem & Chem Proc, Shanghai 200062, Peoples R China
2.Fudan Univ, State Key Lab Mol Engn Polymers, Shanghai 200433, Peoples R China
3.Fudan Univ, Dept Macromol Sci, Shanghai 200433, Peoples R China
4.Chinese Acad Sci, Inst Chem, Key Lab Colloid Interface & Chem Thermodynam, Beijing 100080, Peoples R China
5.SW Texas State Univ, Dept Chem & Biochem, San Marcos, TX 78666 USA
6.SW Texas State Univ, Mat Sci Engn & Commercializat Program, San Marcos, TX 78666 USA
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