Title

Rod-shaped assemblies of FePt-PtTe2 through dynamic templating

Document Type

Article

Date of Original Version

12-17-2007

Abstract

The synthesis of rod-shaped assemblies of FePt-PtTe2 composites through co-precipitation of the two inorganic phases using a simple polyol process in the presence of sucrose and trioctylphosphine oxide (TOPO), has been demonstrated. The formation of plate-shaped PtTe2 crystals offers the framework for the nanorod assembly through heterogeneous nucleation of FePt on the PtTe2 surfaces and inter-plate ligation through sucrose binding. The FePt-PtTe2 nanorod assemblies exhibit high coercivity upon annealing and can be rendered thermally stable and amenable to biofunctionalization by coating a thin silica shell, making the assemblies useful for magnetically-stimulated cell manipulation. Such a synthesis approach can be adapted to encourage new applications in other multi-component/phase systems where shape control can be otherwise difficult.

Publication Title

Advanced Materials

Volume

19

Issue

24

Share

COinS