Synthesis of π-conjugated organoboron polymers by haloboration-phenylboration polymerization of aromatic diynes
| Autor: | Mamoru Miyata, Noriyoshi Matsumi, Yoshiki Chujo |
|---|---|
| Rok vydání: | 1999 |
| Předmět: |
chemistry.chemical_classification
Chloroform Polymers and Plastics Absorption spectroscopy macromolecular substances General Chemistry Polymer Conjugated system Condensed Matter Physics Photochemistry Tetrachloroethane chemistry.chemical_compound Monomer chemistry Polymerization Polymer chemistry Bathochromic shift Materials Chemistry |
| Zdroj: | Polymer Bulletin. 42:505-510 |
| ISSN: | 1436-2449 0170-0839 |
| DOI: | 10.1007/s002890050495 |
| Popis: | π-Conjugated organoboron polymers were prepared by haloboration-phenylboration polymerization beween diyne monomers and bromodiphenylborane. The polymerization was carried out by adding a slightly excess amount of bromodiphenylborane to a tetrachloroethane solution of diynes at room temperature under nitrogen and stirring the reaction mixture for 4 hours at 100°C. The obtained polymers were soluble in common organic solvents such as THF and chloroform. Their molecular weights were estimated to be several thousands by gel permeation chromatographic analysis. In UV-vis absorption spectra, bathochromic shift of λ max and absorption edge in comparison with the corresponding monomers were observed, which indicates the π-conjugation via vacant p-orbital of boron atom. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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