Synthesis of Polyamide Dendrimers bearing Multiple Hydrogen Bonding Parts on the Periphery
| Autor: | Mitsutoshi Jikei, Takayuki Kouketsu, Kazutoshi Yokomachi, Masa-aki Kakimoto |
|---|---|
| Rok vydání: | 2004 |
| Předmět: |
Materials science
Polymers and Plastics Atom-transfer radical-polymerization Hydrogen bond Organic Chemistry Infrared spectroscopy 02 engineering and technology Glutaric acid 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Solvent chemistry.chemical_compound chemistry Dendrimer Polymer chemistry Polyamide Materials Chemistry 0210 nano-technology Glass transition |
| Zdroj: | High Performance Polymers. 16:611-624 |
| ISSN: | 1361-6412 0954-0083 |
| DOI: | 10.1177/0954008304042385 |
| Popis: | A series of polyamide dendrimers (GO-G2) having carboxy1 groups on the periphery were prepared by the divergent method. The reaction of G 18NH2 dendrimer with glutaric acid anhydride gave polyamide dendrimer (Gi-8COOH). The structure of polyamide dendrimers were confirmed by IR, 1H, 13C NMR, MALDI-TOF mass, and elemental analysis. Poly(4-vinylpyridine) (P4VP) was prepared by atom transfer radical polymerization of 4-vinylpyridine. A hydrogen bonded GI-8COOH/P4VP 1/8 (molar ratio) complex was prepared by mixing GIA8COOH with P4VP in methanol, followed by removing the solvent. IR spectrum of Gl-8COOH/P4VP 1/8 complex showed the characteristic absorptions at 2550 and 1950 cm-1 due to the hydrogen bonding. A glass transition temperature (Tg) of GI-8COOH/P4VP 1/8 complex was observed at 177°C by DSC measurement, whereas the Tg values of G 1-8COOH and P4VP were at 147 and 138°C, respectively. |
| Databáze: | OpenAIRE |
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