http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Synthesis and properties of azomethine polymers with bent-core mesogens
최이준,권명훈,옥창우,진왕철 한국정보디스플레이학회 2013 Journal of information display Vol.14 No.4
Three azomethine polymers with bent-core mesogens in their main chains were synthesized via polycondensation, and the effect of the central bent-core structure (Ar = 1,2-phenylene, 2,3-naphthylene, or 2,7-naphthylene) was studied. Although polymers contain bent-shaped mesogens in their main chains, no polymer showed good solubility in common organic solvents but all polymers exhibited liquid crystalline and semi crystalline properties. Two of the three polymers showed thermal degradation before melting due to the high melting point. The polymer with 2,3-naphthylene had a 229◦C melting point. The optical texture of the smectic phase could be observed using quenched samples from the melt state. During heating,the smectic layer structure could be detected via X-ray diffraction.