Thermally Induced Crosslinking of Poly(N -Propargyl Glycine)
| Autor: | Ulrike Braun, Christian Secker, Helmut Schlaad, Felix R. P. Limberg, Matthias Trunk, Sarah M. Brosnan, Peter Strauch |
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| Rok vydání: | 2015 |
| Předmět: |
chemistry.chemical_classification
Thermogravimetric analysis Polymers and Plastics Chemistry Alkene Organic Chemistry Alkyne Nuclear magnetic resonance spectroscopy Condensed Matter Physics Photochemistry Differential scanning calorimetry Solid-state nuclear magnetic resonance Propargyl Polymer chemistry Materials Chemistry Physical and Theoretical Chemistry Thermal analysis |
| Zdroj: | Macromolecular Chemistry and Physics. 216:2080-2085 |
| ISSN: | 1022-1352 |
| DOI: | 10.1002/macp.201500223 |
| Popis: | As polypeptoids become increasingly popular, they present a more soluble and processable alternative to natural and synthetic polypeptides; the breadth of their potential functionality slowly comes into focus. This report analyzes the ability of an alkyne-functionalized polypeptoid, poly(N-propargyl glycine), to crosslink upon heating. The crosslinking process is analyzed by thermal analysis (differential scanning calorimetry and thermogravimetric analysis), Fourier-transform infrared, electron paramagnetic resonance, and solid-state NMR spectroscopy. While a precise mechanism cannot be confidently assigned, it is clear that the reaction proceeds by a radical mechanism that exclusively involves the alkyne functionality, which, upon crosslinking, yields alkene and aromatic products. |
| Databáze: | OpenAIRE |
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