| 학회 |
한국공업화학회 |
| 학술대회 |
2020년 가을 (10/28 ~ 10/30, 광주 김대중컨벤션센터(Kimdaejung Convention Center)) |
| 권호 |
24권 1호 |
| 발표분야 |
포스터-고분자 |
| 제목 |
Liquid Crystalline Behavior of Regioregularity-controlled Poly(3-dodecylthiophene) |
| 초록 |
The thermotropic LC phase transition of regioregularity-controlled poly(3-dodecylthiophene) (RR-controlled P3DDTs) are investigated as a function of RR. This is great system because it can produce different strengths of LC interactions as well as the same molecular structure to exclude the additional factors. As the RR reduces, they exhibit decreased transition temperatures upon heating. Since the P3DDTs with lower RR consist of more regio-defects, they finally yield weaker interchain interactions and faster rod-to-coil conformations and disruption of ordered/oriented LC structures with heating. Furthermore, the formation of Form2 polymorph and the increasing ratio of Form2/Form1 polymorphs towards to lower RR are founded. Considering both the higher melting entropy of Form2 and faster breakdown of Form2 scattering peak upon heating, it is proposed that larger Form2/Form1 can promotes fatigues of LC structures, resulting in lower transition temperatures at lower RR. |
| 저자 |
박현정1, 한문종1, 김영권1, Kin Liao2, 김범준1
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| 소속 |
1KAIST, 2Khalifa Univ. |
| 키워드 |
Liquid Crystalline Interaction; Regioregularity; Conjugated Polymer
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| E-Mail |
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