Jeong Unyong, Herricks Thurston, Shahar Edan, Xia Younan
Department of Chemistry, University of Washington, Seattle, Washington 98195-1700, USA.
J Am Chem Soc. 2005 Feb 2;127(4):1098-9. doi: 10.1021/ja043847u.
We have successfully incorporated iron oxide nanoparticles into monodispersed amorphous selenium (a-Se) colloids by regulating the reaction temperature during the synthesis of a-Se. The surfaces of these a-Se colloids could be coated with conformal and smooth shells made of Pt and SiO2. The Se cores could then be removed by etching with hydrazine. The spherical morphology and superparamagnetism were maintained in all these synthetic steps. The presence of Pt and SiO2 on the outer surfaces of these colloidal particles allows one to control their surface functionalities through the formation of alkanethiolate and siloxane monolayers, respectively.
我们通过在非晶态硒（a-Se）合成过程中调节反应温度，成功地将氧化铁纳米颗粒掺入到单分散的非晶态硒胶体中。这些a-Se胶体的表面可以用由Pt和SiO2制成的保形且光滑的壳层进行包覆。然后可以通过用肼蚀刻去除硒核。在所有这些合成步骤中，球形形态和超顺磁性得以保持。这些胶体颗粒外表面上Pt和SiO2的存在使得人们能够分别通过形成烷硫醇盐和硅氧烷单层来控制它们的表面功能。
Zotero 插件