A General Approach to Binary and Ternary Hybrid Nanocrystals

School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia, United States
Nano Letters (Impact Factor: 13.59). 05/2006; 6(4):875-81. DOI: 10.1021/nl0600833
Source: PubMed

ABSTRACT We describe and demonstrate a general strategy for engineering binary and ternary hybrid nanoparticles based on spontaneous epitaxial nucleation and growth of a second and third component onto seed nanoparticles in high-temperature organic solutions. Multifunctional hybrid nanoparticles that combine magnetic, plasmonic, and semiconducting properties and that are tunable in size and morphology can be realized, as demonstrated for combinations of Au, Fe3O4 and PbS or PbSe. The properties of each component within the hybrids can be modulated strongly by the conjugating component(s) aided by the coherent interfaces between them.

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Available from: Mark Swihart, Jul 23, 2015
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    • "The size of the particles and interparticle distance can be controlled by synthesis parameters but the shape is quite hard to control. There are several techniques used for synthesis of M–S hybrid nanostructures, which include selective growth of metals onto the tips and surfaces of semiconductor nanoparticles [12] [13] [14] [15] [16], diffusion of metals into semiconductors and the growth of semiconductors on metal seeds [17] [18] [19] [20] [21]. Recently few examples on the synthesis of metal–semiconductor core–shell nanostructures have been reported [22] [23] [24]. "
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    • "When temperature is low enough, only ternary systems are formed. When temperature of the reaction mixture quickly increased after sulfur injection, both binary and ternary hybrids are observed [14] . "
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