| 초록 |
Poly(N-propargy-3-methylbutanamide) is known to have a stable helical structure with a cis-transoid conformation through an intramolecular hydrogen bonding within the side amide groups. As a result, this polymer exhibits UV absorption at 400nm in chloroform and dichloromethane and thus it appears yellowish color. In this study, we synthesized the same polymer using various solvents and investigated the solvent effects on their structures and properties. Four solvents with a different hydrogen bonding ability, e.g., CHCl3, THF, MeOH, and DMAc, were used, and the produced polymers were different to each other in color and feature. Their conformation (cis-transoid or cis-cisoid) in solid state was determined by FT-IR and Raman spectroscopy and DSC analyses. Their secondary structure in solution was determined by UV-VIS and NMR spectroscopy. Consequently, the hydrogen bonding ability of the solvent used remarkably affected the structure and physical properties of the resulting polymer. |
