Metal Coordination Stoichiometry Controlled Formation of Linear and Hyperbranched Supramolecular Polymers
| Autor: | Libo Huang, Jia Chen, Yifan Ma, Huayu Qiu, Yuanyuan Liu, Tian He, Feixiang Ye, Shouchun Yin, Cuiling Lin, Luonan Xu |
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| Rok vydání: | 2016 |
| Předmět: |
Materials science
Polymers and Plastics Macromolecular Substances Polymers Metal ions in aqueous solution chemistry.chemical_element 02 engineering and technology 010402 general chemistry 01 natural sciences Europium Polymer chemistry Organometallic Compounds Materials Chemistry Molecule Group 2 organometallic chemistry chemistry.chemical_classification Molecular Structure Ligand Organic Chemistry Stereoisomerism Polymer 021001 nanoscience & nanotechnology 0104 chemical sciences Supramolecular polymers Zinc chemistry Self-assembly 0210 nano-technology |
| Zdroj: | Macromolecular Rapid Communications. 37:1453-1459 |
| ISSN: | 1022-1336 |
| DOI: | 10.1002/marc.201600227 |
| Popis: | Controlling the topologies of polymers is a hot topic in polymer chemistry because the physical and/or chemical properties of polymers are determined (at least partially) by their topologies. This study exploits the host-guest interactions between dibenzo-24-crown-8 and secondary ammonium salts and metal coordination interactions between 2,6-bis(benzimidazolyl)-pyridine units with metal ions (Zn(II) and/or Eu(III) ) as orthogonal non-covalent interactions to prepare supramolecular polymers. By changing the ratios of the metal ion additives (Zn(NO3 )2 and Eu(NO3 )3 ) linkers to join the host-guest dimeric complex, the linear supramolecular polymers (100 mol% Zn(NO3 )2 per ligand) and hyperbranched supramolecular polymers (97 mol% Zn(NO3 )2 and 3 mol% Eu(NO3 )3 per ligand) are separately and successfully constructed. This approach not only expands topological control over polymeric systems, but also paves the way for the functionalization of smart and adaptive materials. |
| Databáze: | OpenAIRE |
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