| 초록 |
Nucleobase functionalized polymers have received a great attention because they have complementary multiple hydrogen bonding between nucleobases. However, the polymerization of these polymers is hard due to poor solubility in a solvent. In this study, adenine functionalized block copolymers, poly(9-(4-vinylbenzyl)adenine)-b-polystyrene (PVBA-b-PS), successfully were synthesized using reversible addition-fragmentation chain transfer polymerization in polar solvents of dimethyl sulfoxide, and dimethylformamide, and characterized by gel permeation chromatography and nuclear magnetic resonance spectroscopy. Phase behavior of PVBA-b-PS with various volume fractions of PS block (fPS) was investigated via small-angle X-ray scattering and transmission electron microscopy. With increasing fPS from 0.1 to 0.8, body-centered-cubic spheres (BCC), hexagonally packed cylinders (HEX), and lamellae (LAM) were observed. Interestingly, PVBA-b-PS with fPS of 0.77 showed asymmetric lamellar microdomains. |
