| 학회 |
한국고분자학회 |
| 학술대회 |
2019년 봄 (04/10 ~ 04/12, 부산컨벤션센터(BEXCO)) |
| 권호 |
44권 1호 |
| 발표분야 |
고분자합성 |
| 제목 |
Influence of Residual Impurities on ROMP after CuAAC Click Chemistry |
| 초록 |
Bottlebrush polymers (BBPs) consist of a linear backbone and grafted side-chains. The high branch-to-backbone ratio in these systems causes BBPs to adopt different conformational behavior compared to linear polymers, making them a topic of interest. The most widely used synthetic method for BBPs is the ring opening metathesis polymerization (ROMP) of macromonomers. Typically, macromonomers are attached to a norbornene moiety via Cu-catalyzed alkyne-azide cylcoaddition (CuAAC) click reaction. We observed that ROMP was disrupted by residual norbornene (NB)-alkyne from the CuAAC. A very small amount of NB-alkyne, which is not removed by precipitation, has a detrimental effect on ROMP conversion. We observed that the conversion dramatically increased when NB-alkyne was removed through an additional purification process and have identified changes in ROMP conversion depending on the amount of residual NB-alkyne through two types of macromonomers, NB-polystyrene and NB-poly(butyl acrylate). |
| 저자 |
최진웅1, 허윤1, 문준수1, 김정곤2, 방준하1
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| 소속 |
1고려대, 2전북대 |
| 키워드 |
copper(I)-catalyzed alkyne-azide cycloaddition reaction; living polymerization; macromonomers; ROMP
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| E-Mail |
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