Photoluminescence Quenching Control in Quantum Dot–Carbon Nanotube Composite Colloids Using a Silica-Shell Spacer

Marek Grzelczak, Miguel  A. Correa-Duarte, Verónica Salgueiriño-Maceira, Michael Giersig, Rodolfo Diaz, and Luis M. Liz-Marzán
Adv. Mater., 2006, 18, 415–420


One-dimensional nanocomposite colloids are prepared by means of electrostatic self-assembly of CdTe nanocrystals on both carbon nanotubes (CNTs) and silica-coated CNTs (see Figure). The dense coverage of these linear nanoparticle assemblies minimizes the spacing between the nanocrystals, thereby facilitating efficient electronic and energy transfer along the nanotubes.