Step-Growth Polymerization Method for Ultrahigh Molecular Weight Polymers
| Autor: | Liangcai Zhang, Xiangzhu Ren, Ke Zhang, Yuanxing Zhang |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
chemistry.chemical_classification
Materials science Polymers and Plastics Organic Chemistry Reactive intermediate 02 engineering and technology Polymer 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Step-growth polymerization Catalysis Inorganic Chemistry chemistry.chemical_compound Monomer chemistry Polymerization Chemical engineering Materials Chemistry Click chemistry Azide 0210 nano-technology |
| Zdroj: | ACS Macro Letters. 8:948-954 |
| ISSN: | 2161-1653 |
| Popis: | The preparation of polymers with an ultrahigh molecular weight (>106 g/mol; UHMW) is always a challenge for homogeneous step-growth polymerization. Herein, a unique homogeneous step-growth polymerization method was developed to prepare various UHMW polymers. In this approach, a double-strain-promoted azide–alkyne click reaction (DSPAAC) with a reactive intermediate was used as the polymerization reaction, and sym-dibenzo-1,5-cyclooctadiene-3,7-diyne (DIBOD) and bis-azide compounds with 2,6-diisopropylphenyl azide terminals were used as the monomer pairs. The DSPAAC reaction, with a reactive intermediate, facilitated this polymerization method to efficiently prepare UHMW polymers under convenient, stoichiometrically imbalanced conditions using a slight excess of DIBOD to bis-azide monomer. In addition, the click nature of the DSPAAC reaction facilitated this polymerization method to synthesize UHMW polymers under ambient conditions, requiring no catalysts. The resultant UHMW polymers presented strong fluor... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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