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Title: Binary Superlattice Design by Controlling DNA-Mediated Interactions

Journal Article · · Langmuir

Most binary superlattices created using DNA functionalization rely on particle size differences to achieve compositional order and structural diversity. Here we study two-dimensional (2D) assembly of DNA-functionalized micron-sized particles (DFPs), and employ a strategy that leverages the tunable disparity in interparticle interactions, and thus enthalpic driving forces, to open new avenues for design of binary superlattices that do not rely on the ability to tune particle size (i.e., entropic driving forces). Our strategy employs tailored blends of complementary strands of ssDNA to control interparticle interactions between micron-sized silica particles in a binary mixture to create compositionally diverse 2D lattices. We show that the particle arrangement can be further controlled by changing the stoichiometry of the binary mixture in certain cases. With this approach, we demonstrate the ability to program the particle assembly into square, pentagonal, and hexagonal lattices. In addition, different particle types can be compositionally ordered in square checkerboard and hexagonal–alternating string, honeycomb, and Kagome arrangements.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0013979; AC02-05CH11231
OSTI ID:
1484291
Journal Information:
Langmuir, Vol. 34, Issue 3; ISSN 0743-7463
Publisher:
American Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 18 works
Citation information provided by
Web of Science

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Cited By (6)

Designing molecular building blocks for the self-assembly of complex porous networks journal January 2019
Assembly of three-dimensional binary superlattices from multi-flavored particles journal January 2018
Inverse design of multicomponent assemblies journal March 2018
Using symmetry to elucidate the importance of stoichiometry in colloidal crystal assembly journal May 2019
Size-dependent thermodynamic structural selection in colloidal crystallization journal September 2019
Inverse Design of Multicomponent Assemblies text January 2018

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