| 학회 | 한국화학공학회 |
| 학술대회 | 2008년 봄 (04/23 ~ 04/25, 제주ICC) |
| 권호 | 14권 1호, p.1160 |
| 발표분야 | 재료 |
| 제목 | Optical properties of silica-gold core-shell particles |
| 초록 | Silica-gold core-shell particles consist of a silica core covered by a thin gold shell. It is well known that controlling the morphology of these particles causes a change in the optical properties. Due to their unique optical properties, these particles can be used in many biomedical applications. In this work, we used Stöber process to synthesize silica particles. The surface of silica particles were functionalized using 3-aminopropyltriethoxysilane (APTES). The surface-modified silica particles were then coated by gold as follows. First, small gold nanoparticles synthesized by the HAuCl4 reduction method were adsorbed onto the APTES-functionalized silica particle surface. Then, HAuCl4 was reduced to grow the gold shell on the silica particles. Various experimental techniques such as transmission electron microscopy (TEM), UV-visible spectroscopy, quasi-elastic light scattering (QELS), and the angularly-resolved scattering intensity characterization were used to characterize the properties of particles As the Mie scattering theory suggests, scattering characteristics in terms of scattering angle is highly dependent on the size of scatterers. |
| 저자 | 이호섭, 문세영, 김동현, 이강택 |
| 소속 | 연세대 |
| 키워드 | Optical property; silica-gold core-shell |
| 원문파일 | 초록 보기 |
