radius ratio rules formulated for alloying of different metals. Alloy arrays consisting of Au and Ag nanocrystals of different sizes have been made [124].
4.3.2.2 Arrays of Semiconductor Nanocrystals
Bawendi et al. first made monodisperse CdSe nanocrystals by rapid injection
of a tri-n-octylphosphine (TOP) solution containing dimethylcadmium and tri-noctylphosphine selenide into a hot solution of TOP and TOP oxide [47]. By a simple extension of this technique, CdTe and CdS nanocrystals can also be obtained
10 nm
(a)
10 nm
(b)
Fig. 4.11. TEM micrographs showing hexagonal arrays of
thiolized Pd nanocrystals: (a) Pd 561 octanethiol (b) Pd 1415 ,
octanethiol. Organized arrays of these nanocrystals extend to
lengths over several microns.
4.3 Programmed Assemblies 65
4.3.2.2 Arrays of Semiconductor Nanocrystals
Bawendi et al. first made monodisperse CdSe nanocrystals by rapid injection
of a tri-n-octylphosphine (TOP) solution containing dimethylcadmium and tri-noctylphosphine selenide into a hot solution of TOP and TOP oxide [47]. By a simple extension of this technique, CdTe and CdS nanocrystals can also be obtained
10 nm
(a)
10 nm
(b)
Fig. 4.11. TEM micrographs showing hexagonal arrays of
thiolized Pd nanocrystals: (a) Pd 561 octanethiol (b) Pd 1415 ,
octanethiol. Organized arrays of these nanocrystals extend to
lengths over several microns.
4.3 Programmed Assemblies 65