Construction of composite particles with monolayered poly(styrene-co-acrylic acid) spheres on gold surface via heterocoagulation
- 作者：Jong Hyuk Park ; Sangwook Woo ; Jung Hyun Kim ; Raehyun Kim ; Junkyung Kim ; Sang-Soo Lee
- 关键词：Composite materials ; Heterocoagulation ; Microstructure ; Monolayered adsorption ; Gold
- 刊名：Materials Letters
- 出版年：2008
- 期刊代码：59_0167577x
- 类别：ms
- 出版时间：31 August 2008
- 卷：62
- 期：23
- 页码：3916-3918
- 文件大小：528 K
摘要
Composite particles are successfully fabricated in a shape of bead-on-bead through a heterocoagulation. Submicron poly(styrene-co-acrylic acid) (PSAA) spheres are prepared and used as guest materials of composite particles. The spheres adsorb on the gold surface of a host material in perfect monolayered form and the pH dependence of the adsorption degree is also investigated. At strong acidic condition, the spheres are effectively adsorbed on the host materials, while the adsorption efficiency dramatically decreases with increasing pH due to the deprotonation of carboxyl groups at the surface of the spheres. Even though the composite particles are immersed in good solvents of PSAA for 12 h, the particles exhibit excellent adsorption stability.