作者: Marc R. Knecht , David W. Wright
DOI: 10.1021/CM049058T
关键词:
摘要: Silica encapsulation of nanoparticles has had important applications in areas as diverse catalyst support heterogeneous processes to controlled drug release. Current methods production often require stringent conditions which can lead degradation the encapsulated material. Recently, we have developed a dendrimer-driven biomimetic approach nanoparticle silica formation that occurs at ambient conditions. Extending this chemistry, PAMAM dendrimers been utilized successfully both host for Au0 synthesis and an active agent condensation. The resulting product yields mesoporous nanospheres 80-nm diameter supporting randomly distributed gold nanoparticles. Alternately, positively charged surface may be used form electrostatic precursor complex with low ratios negatively CdSe/ZnS core shell semiconductor (AMP dots) condense silica, trapping AMP dots within 200-nm nanospheres. ...