| 학회 | 한국고분자학회 |
| 학술대회 | 2003년 봄 (04/11 ~ 04/12, 연세대학교) |
| 권호 | 28권 1호, p.242 |
| 발표분야 | 기능성 고분자 |
| 제목 | Self-Assemblies of Coil-Rod-Coil Triblock Molecules with Perforated Lamellar Mesophase |
| 초록 | The control of supramolecular nanostructure in self-assembling materials is to achieve desired functions and properties in materials science. Rod-coil molecules consisting of a rigid rod block and a flexible coil block represent a novel class of self-assembling materials. These interesting supramolcular assemblies are believed to arise from the competition of microphase separation between coil and rod blocks into ordered periodic structures, and the tendency of the rod block to form anisotropic, orientationally ordered structures. Coil-rod-coil ABC triblock systems consisting of hydrophilic poly(ethylene oxide)s coil, hydrophobic two biphenyl rod and hydrophobic docosyl alkyl coil offer the opportunity to study new aspects of liquid-crystalline behavior. Coil-rod-coil monomer and dimer triblock molecules were synthesized. The thermotropic phase behavior of the coil-rod-coil triblock molecules was investigated by a combination of techniques of differential scanning calorimetry (DSC), polarized optical microscopy, and X-ray scattering. In crystalline state, all of the triblock molecules shows lamellar crystalline assembly. In liquid crystalline state, coil-rod-coil triblock molecules show perforated lamellar, hexagonal columnar, and spherical micellar mesophases as temperature increases. Interestingly, in the coil-rod-coil dimer triblock molecule, hexagonally perforated lamellar mesophase transforms into tetragonally as temperature increases |
| 저자 | 오남근;진왕철;임준환;이명수 |
| 소속 | 포항공과대 |
| 키워드 | self-asseblies; triblock molecule; perforated lamellar mesophase |
