| 학회 |
한국고분자학회 |
| 학술대회 |
2015년 봄 (04/08 ~ 04/10, 대전컨벤션센터) |
| 권호 |
40권 1호 |
| 발표분야 |
고분자구조 및 물성 |
| 제목 |
Facile Control of Wide Range of Regioregularity: Significant Influence on Mechanical and Electrical Properties of Conjugated Polymers |
| 초록 |
While regioregularity (RR) has been known to have a strong influence on inherent properties of conjugated polymer, systematic study of RR has been limited due to the lack of synthetic methodology. Herein, we prepared a series of poly(3-hexylthiophene) (P3HTs) having a wide range of RR from 64 to 98% by the modified Grignard metathesis method that utilizes the dimer moiety. We observed that the RR determines crystalline behavior, mechanical and electrical properties of P3HT. Although higher RR P3HT had higher mobility, its increased degree of crystallnity induced fragile nature of polymers (elongation break ＜1%). In contrast, lower RR had lower elastic modulus and thereby leading to significant reduction of fragility. Therefore, our finding suggested that the control of RR is critical to regulate the properties of conjugated polymers between electrical performance and mechanical resilience as depending on the purpose of the applications. |
| 저자 |
김진성1, 김재한1, 이원호1, 유호정2, 김형준1, 오준학2, 정운룡3, Kin Liao4, 김택수1, 김범준1
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| 소속 |
1한국과학기술원, 2포항공과대, 3연세대, 4Khalifa Univ. |
| 키워드 |
conjugated polymers; P3HT; regioregularity; mechanical properties; electrical properties
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| E-Mail |
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