| 학회 |
한국고분자학회 |
| 학술대회 |
2019년 가을 (10/09 ~ 10/11, 제주컨벤션센터) |
| 권호 |
44권 2호 |
| 발표분야 |
고분자합성 |
| 제목 |
Synthesis of an Amphiphilic Spiro-shaped Multi-Block copolymer through Thiol-ene Click chemistry |
| 초록 |
In our previous study, we synthesized 8-shaped polystyrene (Spiro-PS) with terminal mercapto groups. It was used to synthesize a high molecular weight polyring via oxidation reaction. A multiblock ([PEO-b-spiro-PS]) copolymer with a topologically novel architecture was synthesized using thiol-ene step-growth polymerization reaction. Spiro-PS with dimercapto groups as the hard segment was synthesized in three main steps: (1) preparation of 4-arm PS by ATRP and conversion of the chain-end group to azide, (2) CuAAc to synthesize a tricyclic PS, and (3) tactical ring opening of the tricyclic PS via disulfide/thiol redox reaction. The PEO soft segment was obtained as chain-ends modified with norbornene groups. Finally, thiol-ene reaction of the highly reactive norbornene chain-ends of PEG with the dimercapto groups initiated by photo-initiation of spiro-PS produced the multiblock copolymer in a quantitative yield. It was characterized using SEC, 1H NMR, FT-IR, XPS, and Raman spectroscopy |
| 저자 |
김경수1, Aruna Kumar Mohanty1, 안준영2, 방미희3, 장태현2, 전흥배3, 주상우4, 백현종1
|
| 소속 |
1부산대, 2포항공과대, 3광운대, 4숭실대 |
| 키워드 |
Click chemistry; Multiblock copolymer; Polymer-polymer conjugation; Cyclic polymer; Thiol-ene
|
| E-Mail |
|
