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Self-Assembly of 2D Gold Nanoparticle Superlattice in a Polymer Vesicle Layer Driven by Hydrophobic Interaction
journal contribution
posted on 2021-07-15, 16:04 authored by Jong Dae Jang, Moongi Bae, Changwoo Do, Soo-Hyung Choi, Joona Bang, Young Soo Han, Tae-Hwan KimSelf-assembly
of gold nanoparticles (AuNPs) into highly ordered
superstructures provides a promising route toward fabricating materials
with new functionalities or enhanced physical properties. Although
self-assembly of AuNPs has garnered significant research attention
recently, a highly ordered superlattice of AuNPs under a low concentration
in a confined geometry formed by nonfunctionalized materials has not
been reported. Herein, we investigate the self-assembly of a 2D AuNPs
superlattice in a polymer vesicle layer using hydrophobic interactions,
which exhibits centered rectangular lattice symmetry. To create the
highly ordered AuNPs superlattice, the P(EGx-b-iPGEy) block
copolymers that form the thickness of the hydrophobic vesicle layer
comparable to the size of the AuNP are used as a template to control
the AuNP degree of freedom. To the best of our knowledge, this study
provides the first demonstration of a centered rectangular structure
formation of AuNPs at the vesicle layer in 2D confined geometry.