Rational synthesis of heterostructured nanoparticles with morphology control.

Rational synthesis of Pt-Au(n) nanoparticles (NPs) has been achieved by overgrowing Au on Pt with n, the number of Pt-Au heterojunctions in each particle, controlled from 1 to 4, and the corresponding NPs in pear-, peanut-, or clover-like morphology. Monte Carlo simulation reveals that the morphology control can be correlated to a thermodynamic equilibrium of the Au coherence energy, the overall particle surface energy, and the heterogeneous Pt-Au interfacial energy in the composite system, which is manipulated by the seeding particle size and solvent polarity. The developed synthetic strategy together with the provided fundamental understanding of heterogeneous nucleation and heterostructure growth could have great potential toward the rational synthesis of composite nanomaterials with morphology control for advanced catalytic and other functional applications.

[1]  Younan Xia,et al.  Gold nanocages covered by smart polymers for controlled release with near-infrared light , 2009, Nature materials.

[2]  H. Zeng,et al.  Recent Progress in Syntheses and Applications of Dumbbell‐like Nanoparticles , 2009, Advanced materials.

[3]  A Paul Alivisatos,et al.  Strain-dependent photoluminescence behavior of CdSe/CdS nanocrystals with spherical, linear, and branched topologies. , 2009, Nano letters.

[4]  Chenjie Xu,et al.  Porous hollow Fe(3)O(4) nanoparticles for targeted delivery and controlled release of cisplatin. , 2009, Journal of the American Chemical Society.

[5]  Sara A. Majetich,et al.  Optical imaging and magnetophoresis of nanorods , 2009 .

[6]  Peidong Yang,et al.  Sub-10 nm platinum nanocrystals with size and shape control: catalytic study for ethylene and pyrrole hydrogenation. , 2009, Journal of the American Chemical Society.

[7]  Hong Yang,et al.  Designer platinum nanoparticles: Control of shape, composition in alloy, nanostructure and electrocatalytic property , 2009 .

[8]  Chenjie Xu,et al.  Dumbbell-like Au-Fe3O4 nanoparticles for target-specific platin delivery. , 2009, Journal of the American Chemical Society.

[9]  Younan Xia,et al.  Shape-controlled synthesis of platinum nanocrystals for catalytic and electrocatalytic applications , 2009 .

[10]  Charles M Lieber,et al.  Ultrathin Au nanowires and their transport properties. , 2008, Journal of the American Chemical Society.

[11]  Shouheng Sun,et al.  A general approach to the size- and shape-controlled synthesis of platinum nanoparticles and their catalytic reduction of oxygen. , 2008, Angewandte Chemie.

[12]  Charles M. Lieber,et al.  Nanoelectronics from the bottom up. , 2007, Nature materials.

[13]  D. Nikles,et al.  Pt3Sn Nanoparticles with Controlled Size: High-Temperature Synthesis and Room-Temperature Catalytic Activation for Electrochemical Methanol Oxidation , 2007 .

[14]  Jaemin Kim,et al.  A general strategy for synthesizing FePt nanowires and nanorods. , 2007, Angewandte Chemie.

[15]  Shouheng Sun,et al.  Synthesis of monodisperse Pt nanocubes and their enhanced catalysis for oxygen reduction. , 2007, Journal of the American Chemical Society.

[16]  Zhong Lin Wang,et al.  Synthesis of Tetrahexahedral Platinum Nanocrystals with High-Index Facets and High Electro-Oxidation Activity , 2007, Science.

[17]  Peidong Yang,et al.  Shaping binary metal nanocrystals through epitaxial seeded growth. , 2007, Nature materials.

[18]  R. Tilley,et al.  Preparation, self-assembly, and mechanistic study of highly monodispersed nanocubes. , 2007, Journal of the American Chemical Society.

[19]  A. Lu,et al.  Magnetic nanoparticles: synthesis, protection, functionalization, and application. , 2007, Angewandte Chemie.

[20]  Jin-Sil Choi,et al.  Shape control of semiconductor and metal oxide nanocrystals through nonhydrolytic colloidal routes. , 2006, Angewandte Chemie.

[21]  Hongyou Fan,et al.  Synthesis of FePt nanocubes and their oriented self-assembly. , 2006, Journal of the American Chemical Society.

[22]  Tymish Y. Ohulchanskyy,et al.  A general approach to binary and ternary hybrid nanocrystals. , 2006, Nano letters.

[23]  Arezou A Ghazani,et al.  Determining the size and shape dependence of gold nanoparticle uptake into mammalian cells. , 2006, Nano letters.

[24]  E. Rabani,et al.  Untitled #2 , 2020, Gender Futurity, Intersectional Autoethnography.

[25]  Philip S Low,et al.  In vitro and in vivo two-photon luminescence imaging of single gold nanorods. , 2005, Proceedings of the National Academy of Sciences of the United States of America.

[26]  M. Shim,et al.  γ-Fe2O3/II−VI Sulfide Nanocrystal Heterojunctions , 2005 .

[27]  M. El-Sayed,et al.  Chemistry and properties of nanocrystals of different shapes. , 2005, Chemical reviews.

[28]  Shouheng Sun,et al.  Dumbbell-like bifunctional Au-Fe3O4 nanoparticles. , 2005, Nano letters.

[29]  Bing Xu,et al.  Facile one-pot synthesis of bifunctional heterodimers of nanoparticles: a conjugate of quantum dot and magnetic nanoparticles. , 2004, Journal of the American Chemical Society.

[30]  Lin-Wang Wang,et al.  Two- versus three-dimensional quantum confinement in indium phosphide wires and dots , 2003, Nature materials.

[31]  Uri Banin,et al.  Synthesis and size-dependent properties of zinc-blende semiconductor quantum rods , 2003, Nature materials.

[32]  Christopher B. Murray,et al.  Synthesis and Characterization of Monodisperse Nanocrystals and Close-Packed Nanocrystal Assemblies , 2000 .

[33]  Weidong Yang,et al.  Shape control of CdSe nanocrystals , 2000, Nature.