CdSe tetrapod synthesis using cetyltrimethylammonium bromide and heat transfer fluids?

Journal of Materials Chemistry Pub Date: 2010-02-11 DOI: 10.1039/B922145J

Abstract

The synthesis of CdSe tetrapod-shaped quantum dots using phenyl-based heat transfer fluids as inexpensive alternatives to octadecene solvent was studied. The CdSe tetrapods were synthesized using the hot-injection method, in which the trioctylphosphine selenide precursor and the shape-inducing cetyltrimethylammonium bromide surfactant were injected into a cadmium oleate-containing solvent at 190 ?C. At a synthesis temperature of 160 ?C, the resulting quantum dot particles were found to grow more slowly in heat transfer fluids and pure phenyl-type solvents than in octadecene. With synthesis time, the selectivity to tetrapods increased, and the arms grew proportionally in width and length. The use of heat transfer fluids provides a convenient means to control growth of shaped nanoparticles.

Graphical abstract: CdSe tetrapod synthesis using cetyltrimethylammonium bromide and heat transfer fluids
Recommended Literature