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Title: In situ microscopy of the self-assembly of branched nanocrystals in solution

Journal Article · · Nature Communications
DOI:https://doi.org/10.1038/ncomms11213· OSTI ID:1255732
 [1];  [2];  [1];  [3];  [3];  [4]
  1. Univ. of Nebraska-Lincoln, Lincoln, NE (United States)
  2. Brookhaven National Lab. (BNL), Upton, NY (United States)
  3. Istituto Italiano di Tecnologia (IIT), Genova (Italy)
  4. Univ. of Stuttgart, Stuttgart (Germany)

Here, solution-phase self-assembly of nanocrystals into mesoscale structures is a promising strategy for constructing functional materials from nanoscale components. Liquid environments are key to self-assembly since they allow suspended nanocrystals to diffuse and interact freely, but they also complicate experiments. Real-time observations with single-particle resolution could have transformative impact on our understanding of nanocrystal self-assembly. Here we use real-time in situ imaging by liquid-cell electron microscopy to elucidate the nucleation and growth mechanism and properties of linear chains of octapod-shaped nanocrystals in their native solution environment. Statistical mechanics modelling based on these observations and using the measured chain-length distribution clarifies the relative importance of dipolar and entropic forces in the assembly process and gives direct access to the interparticle interaction. Our results suggest that monomer-resolved in situ imaging combined with modelling can provide unprecedented quantitative insight into the microscopic processes and interactions that govern nanocrystal self-assembly in solution.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0012704
OSTI ID:
1255732
Report Number(s):
BNL-112268-2016-JA; KC0403020
Journal Information:
Nature Communications, Vol. 7; ISSN 2041-1723
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 88 works
Citation information provided by
Web of Science

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Cited By (19)

In Situ Atomic Force Microscopy of the Reconfiguration of On‐Surface Self‐Assembled DNA‐Nanoparticle Superlattices journal March 2019
Dynamics of Templated Assembly of Nanoparticle Filaments within Nanochannels journal July 2017
Liquid-Phase Transmission Electron Microscopy for Studying Colloidal Inorganic Nanoparticles journal November 2017
Nanoparticle Interactions Guided by Shape-Dependent Hydrophobic Forces journal March 2018
Nanoparticle Superlattices: The Roles of Soft Ligands journal September 2017
In-situ liquid-cell TEM study of radial flow-guided motion of octahedral Au nanoparticles and nanoparticle clusters journal April 2018
In-situ liquid cell transmission electron microscopy investigation on oriented attachment of gold nanoparticles journal January 2018
Understanding and tailoring ligand interactions in the self-assembly of branched colloidal nanocrystals into planar superlattices journal March 2018
Kinetic pathways of crystallization at the nanoscale journal October 2019
Feedback control for defect-free alignment of colloidal particles journal January 2018
Radiation damage during in situ electron microscopy of DNA-mediated nanoparticle assemblies in solution journal January 2018
Constant-rate dissolution of InAs nanowires in radiolytic water observed by in situ liquid cell TEM journal January 2018
In situ electron microscopy of the self-assembly of single-stranded DNA-functionalized Au nanoparticles in aqueous solution journal January 2019
Cluster-mediated assembly enables step-growth copolymerization from binary nanoparticle mixtures with rationally designed architectures journal January 2018
Controlling dissolution of PbTe nanoparticles in organic solvents during liquid cell transmission electron microscopy journal January 2019
Effect of the driving force on nanoparticles growth and shape: an opto-electrochemical study journal January 2020
Dynamic deformability of individual PbSe nanocrystals during superlattice phase transitions journal June 2019
Universal Noble Metal Nanoparticle Seeds Realized Through Iterative Reductive Growth and Oxidative Dissolution Reactions journal May 2014
Formation of Au Nanoparticles in Liquid Cell Transmission Electron Microscopy: From a Systematic Study to Engineered Nanostructures journal November 2017

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