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제112회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Recyclable Pd-Fe3O4 Heterodimeric Nanocrystals for the Synthesis of Conjugated Polymers

등록일
2013년 9월 2일 10시 09분 28초
접수번호
1263
발표코드
ORGN.P-871 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
10월 16일 (수요일) 16:00~19:00
발표형식
포스터
발표분야
유기화학
저자 및
공동저자
배일학, 변상문, 최태림*, 김병문*
서울대학교 화학부, Korea

Conjugated polymers have attracted much interest in industrial and academic fields due to their electrical and optoelectronic properties. Most of Conjugated Polymer have been synthesized via metal-catalyzed reactions in homogeneous system such as Pd-catalyzed Suzuki, Stille, Heck reactions, Ni-catalyzed Negishi, Kumada reactions, Ru-catalyzed olefin metathesis reactions (ROMP, ADMET), and Cu-catalyzed Sonogashira reaction. However, these homogeneous systems are mostly limited in that catalysts always remain within the polymer as metal and ligands after the reaction. These residual catalysts could reduce the electrical performance of Conjugated Polymer because those residual catalysts could act as a trap site of a hole or an electron. We report on the utilization of Pd-Fe3O4 heterodimer nanocrystals as a magnetically recyclable and effective catalyst for the repetitive synthesis of CP via Suzuki cross-coupling reactions. After optimization of various reaction conditions of the polymerization, it was found that Pd-Fe3O4 heterodimer nanocrystal exhibit good catalytic activity for the synthesis of CP’s, can minimize the Pd content in the product CP, was magnetically recoverable through external magnet, and finally was reusable for the polymerization eleven times.


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