| 학회 |
한국고분자학회 |
| 학술대회 |
2009년 가을 (10/08 ~ 10/09, 광주과학기술원 오룡관) |
| 권호 |
34권 2호 |
| 발표분야 |
고분자 가공/복합재료 |
| 제목 |
Shape-Controlled Synthesis of Gold Icosahedra and Nanoplates Using Pluronic P123 Block Copolymer and Sodium Chloride |
| 초록 |
Gold icosahedra with an average diameter of about 600 nm were easily prepared by heating an aqueous solution of the amphiphilic block copolymer, poly(ethylene oxide)20-poly(propylene oxide)70-poly(ethylene oxide)20 (Pluronic P123), and hydrogen tetrachloroaurate(III) trihydrate (HAuCl43H2O) at 60 oC for 25 min. When sodium chloride (NaCl: HAuCl4 molar ratio = 10:1) was added to this aqueous solution, gold nanoplates were produced. The chloride ion was found to be a key component in the formation of the gold nanoplates by facilitating the growth of {111} oriented hexagonal/triangular gold nanoplates, because similar gold nanoplates were produced when LiCl or KCl was added to the aqueous solution instead of NaCl, while gold nanocrystals having irregular shapes were produced when NaBr or NaI was added. |
| 저자 |
이원기1, 차상호1, 김기현1, 김병우2, 이종찬1
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| 소속 |
1서울대, 2성균관대 |
| 키워드 |
gold; icosahedra; nanoplate; amphiphilic block copolymer; sodium chloride
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| E-Mail |
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