Controlled Self-Assembly and Tuning of Large PbS Nanoparticle Supercrystals

Self-assembly of colloidal nanocrystals (NCs) into ordered superlattices (SLs) and supercrystals (SCs) enables new artificial NC solids for nanoelectronic and nanophotonic applications, which requires critical control of nucleation and growth conditions. Herein large SCs of PbS NCs up to ∼100 μm size were synthesized by two controlled self-assembly methods from NC solutions. Both translational symmetry and orientational ordering of the nanocrystals in the SCs were readily tuned by excess oleic acid ligands and antisolvents. Slow evaporation and the counterdiffusion method of solvents resulted in the formation of single SCs with two different SLs from the same PbS NCs: a face-centered cubic SL with weak yet complex orientational order or a body-centered cubic SL with strong and uniform particle orientation, respectively. The translational ordering was mainly determined by the effective shape of the NCs while the difference in orientational order was a result of the balance between ligand–ligand attraction ...

[1]  Ruipeng Li,et al.  Formation of self-assembled gold nanoparticle supercrystals with facet-dependent surface plasmonic coupling , 2018, Nature Communications.

[2]  H. Fan,et al.  Regulating Multiple Variables To Understand the Nucleation and Growth and Transformation of PbS Nanocrystal Superlattices. , 2017, Journal of the American Chemical Society.

[3]  Detlef-Matthias Smilgies,et al.  Kinetics of the self-assembly of nanocrystal superlattices measured by real-time in situ X-ray scattering. , 2016, Nature materials.

[4]  G. Schatz,et al.  Superlattice Plasmons in Hierarchical Au Nanoparticle Arrays , 2015 .

[5]  Jiye Fang,et al.  Understanding the forces acting in self-assembly and the implications for constructing three-dimensional (3D) supercrystals , 2015, Nano Research.

[6]  Ruipeng Li,et al.  An Obtuse Rhombohedral Superlattice Assembled by Pt Nanocubes. , 2015, Nano letters.

[7]  Ruipeng Li,et al.  Decoding the superlattice and interface structure of truncate PbS nanocrystal-assembled supercrystal and associated interaction forces. , 2014, Journal of the American Chemical Society.

[8]  Nathan A. Mahynski,et al.  Stabilizing colloidal crystals by leveraging void distributions , 2014, Nature Communications.

[9]  Ruipeng Li,et al.  Stress-induced phase transformation and optical coupling of silver nanoparticle superlattices into mechanically stable nanowires , 2014, Nature Communications.

[10]  L. D. A. Siebbeles,et al.  Long-range orientation and atomic attachment of nanocrystals in 2D honeycomb superlattices , 2014, Science.

[11]  W. Tisdale,et al.  Monodisperse, air-stable PbS nanocrystals via precursor stoichiometry control. , 2014, ACS nano.

[12]  Detlef-M. Smilgies,et al.  Solvent-mediated self-assembly of nanocube superlattices. , 2014, Journal of the American Chemical Society.

[13]  M. Dijkstra,et al.  Low-dimensional semiconductor superlattices formed by geometric control over nanocrystal attachment. , 2013, Nano letters.

[14]  Horst Weller,et al.  Correlating superlattice polymorphs to internanoparticle distance, packing density, and surface lattice in assemblies of PbS nanoparticles. , 2013, Nano letters.

[15]  T. Hanrath,et al.  Comparing the structural stability of PbS nanocrystals assembled in fcc and bcc superlattice allotropes. , 2012, Journal of the American Chemical Society.

[16]  T. Hanrath.  Colloidal nanocrystal quantum dot assemblies as artificial solids , 2012 .

[17]  Richard G Hennig,et al.  Predicting nanocrystal shape through consideration of surface-ligand interactions. , 2012, ACS nano.

[18]  D. Vanmaekelbergh,et al.  Self-assembly of colloidal nanocrystals as route to novel classes of nanostructured materials , 2011 .

[19]  Paulette Clancy,et al.  Shape-anisotropy driven symmetry transformations in nanocrystal superlattice polymorphs. , 2011, ACS nano.

[20]  Byeongdu Lee,et al.  High-pressure structural stability and elasticity of supercrystals self-assembled from nanocrystals. , 2011, Nano letters.

[21]  Richard G Hennig,et al.  Controlling nanocrystal superlattice symmetry and shape-anisotropic interactions through variable ligand surface coverage. , 2011, Journal of the American Chemical Society.

[22]  R. Bruinsma,et al.  Entropic crystal–crystal transitions of Brownian squares , 2011, Proceedings of the National Academy of Sciences.

[23]  Zaicheng Sun,et al.  Pressure-driven assembly of spherical nanoparticles and formation of 1D-nanostructure arrays. , 2010, Angewandte Chemie.

[24]  J. Huang,et al.  Nanostructured gold architectures formed through high pressure-driven sintering of spherical nanoparticle arrays. , 2010, Journal of the American Chemical Society.

[25]  Andreas Kornowski,et al.  Ultrathin PbS Sheets by Two-Dimensional Oriented Attachment , 2010, Science.

[26]  M. Kovalenko,et al.  Prospects of colloidal nanocrystals for electronic and optoelectronic applications. , 2010, Chemical reviews.

[27]  Peter K. Stoimenov,et al.  Face-Centered Cubic and Hexagonal Closed-Packed Nanocrystal Superlattices of Gold Nanoparticles Prepared by Different Methods† , 2003 .

[28]  Alexander A. Balandin,et al.  Miniband formation in a quantum dot crystal , 2001 .

[29]  M. Pileni.  Nanocrystal Self-Assemblies: Fabrication and Collective Properties , 2001 .

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

[31]  Richard J. Saykally,et al.  Reversible Tuning of Silver Quantum Dot Monolayers Through the Metal-Insulator Transition , 1997 .

[32]  Cherie R. Kagan,et al.  Self-Organization of CdSe Nanocrystallites into Three-Dimensional Quantum Dot Superlattices , 1995, Science.

[33]  P. Flory.  Thermodynamics of High Polymer Solutions , 1941 .

[34]  M. Huggins.  Solutions of Long Chain Compounds , 1941 .