| 학회 |
한국고분자학회 |
| 학술대회 |
2012년 봄 (04/12 ~ 04/13, 대전컨벤션센터) |
| 권호 |
37권 1호 |
| 발표분야 |
기능성 고분자 |
| 제목 |
Synthesis of α-amino-ω-thiolated-heterotelelchelic poly(ethylene oxide) and its application for preparation of gold nanoparticles. |
| 초록 |
We have developed a useful method to control the molecular weight of poly(ethylene oxide) by n-butyllithium (n-BuLi)-initiated ring-opening polymerization of ethylene oxide (EO) with tert-butoxide (t-BuOK) in the mixture of benzene/DMSO at 35℃ for 48h. In addition, an alkoxide bearing sodium or potassium counterion is well known to initiate ethylene oxide leading to living polymerization in polar solvent. In this study, N-(2-hydroxyethyl)phthalimide was converted to the corresponding sodium alkoxide in THF using sodium hydride, followed by polymerization of ethylene oxide at 40℃ for 48h. After complete polymerization, propylene sulfide delivered into the reactor via a breakseal technique under high vacuum. The resulting polymer was deimidated by using hydrazine monohydrate in DMF at 120℃. The resulting polymer was used as a polymeric stabilizer to stabilize gold nanoparticles from chloroauric acid in ethanol at 40℃. In this presentation the preliminary results will be discussed. |
| 저자 |
최우석, 김형철, 권난현, 이재혁, 김윤, 양세라, 시디크 아부바카, 강호정, 이재열, 김정안
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| 소속 |
경희대 |
| 키워드 |
ring-opening polymerization; heterotelelchelic polymer; gold nanoparticles
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| E-Mail |
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