| 학회 |
한국고분자학회 |
| 학술대회 |
2018년 가을 (10/10 ~ 10/12, 경주컨벤션센터) |
| 권호 |
43권 2호 |
| 발표분야 |
대학원생 구두발표(영어발표, 발표15분) |
| 제목 |
monodisperse magnetic silica hexapods |
| 초록 |
A simple yet versatile solution-based process to produce colloidal silica hexapods is developed in which various shapes of silica rods are grown on the faces of cubes in a controlled manner. In the presence of hematite cubic particles, water droplets nucleate on the surface of hematite by phase separation in pentanol. By adjusting the water concentration, six droplets can form on each face of the hematite cube. Silica precursor is then administered into the system which gradually diffuses into the water droplets through the oil phase. Within the droplets, hydrolysis and condensation of the precursors take place. As a result, silica hexapods on a magnetic hematite cubic seed are produced. When organosilane precursor is added together, pancake-like hexapods are formed due to the reduction of interfacial tension. These colloidal hexapods can further be utilized as new building blocks for self-assembly for constructing functional materials. |
| 저자 |
김재현1, 이기라1, Stefano Sacanna2, 오준석2
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| 소속 |
1성균관대, 2Newyork Univ. |
| 키워드 |
silica; magnetic particle; hexapod; micromotor
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| E-Mail |
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