期刊
EUROPEAN POLYMER JOURNAL
卷 49, 期 12, 页码 4062-4071出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.eurpolymj.2013.09.012
关键词
Multiresponsive; Supramolecular gel; Metal-ligand coordination; Hydrogen bonding
资金
- National Natural Science Foundation of China [21074103]
- Fundamental Research Funds for the Central Universities [2010121018]
- Scientific Research Foundation for Returned Scholars
Macromonomers bearing tridentate 2,6-bis(1,2,3-trizol-4-yl)pyridine (BTP) ligand unit synthesized via CuAAC click chemistry in the middle of the chain and two ureidopyrimidinone (UPy) motifs on the ends linked to the central BTP unit via PEGs of various lengths were synthesized and used for the study of gelation both with and without the presence of Eu(III) ions. Various interesting gelation behaviors were found. Gels exhibited various multi-responsive properties, including photoluminescence, mechanoresponsive properties, self-healing abilities, thermorepsonsive properties and chemoresponsive properties. The different gelation abilities and multi-responsive properties for different systems were shown to be resulted from difference in PEG linker lengths and the introduction of orthogonal metal-ligand coordination and hydrogen bonding interactions. The selective responsiveness to different chemicals would allow the development of modular sensory systems that utilize a combination of orthogonal supramolecular interactions. (C) 2013 Elsevier Ltd. All rights reserved.
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