2024-03-28T09:41:20Z
https://nagoya.repo.nii.ac.jp/oai
oai:nagoya.repo.nii.ac.jp:02002158
2023-01-16T04:41:27Z
673:674:675
Two-Step Nanoparticle Crystallization via DNA-Guided Self-Assembly and the Nonequilibrium Dehydration Process
Sumi, Hayato
Ohta, Noboru
Sekiguchi, Hiroshi
Harada, Shunta
Ujihara, Toru
Tsukamoto, Katsuo
Tagawa, Miho
open access
This document is the Accepted Manuscript version of a Published Work that appeared in final form in [Crystal Growth & Design], copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see [https://pubs.acs.org/articlesonrequest/AOR-ST9G5CFEE3KBRMR6XZRC].”
DNA strands are powerful tools as ligand molecules that bind nanoparticles to each other via programmable self-assembly for colloidal crystallization. We found that hydrated DNA-functionalized nanoparticle (DNA-NP) superlattices with a properly controlled volume fraction and spatial arrangement of nanoparticles successfully maintained their crystallinity even after dehydration, which involves drastic contraction. A detailed study of the structural changes was performed for the self-assembled DNA-NP sample using small-angle X-ray scattering (SAXS) after dehydration. Then, an optimal volume fraction of nanoparticles in the superlattice, ϕ, which minimized the level of distortion of the dehydrated superlattice, was found for each bcc and fcc structure. By acquiring clear SAXS diffraction patterns showing crystal symmetries for dehydrated DNA-NP superlattices, their lattice distortion was evaluated using our analysis technique, which is based on Hosemann’s paracrystalline theory and involves SAXS and scanning electron microscopy data. Geometrical calculations substantiated the ease of movement of a nanoparticle under the influence of repulsions from adjacent particles that mainly affect the dehydration stability. These results suggest that it is possible to design the crystal structure of solid nanoparticle superlattices via DNA-guided nanoparticle assembly under a near-equilibrium state in solution as the first step, followed by dehydration under nonequilibrium conditions as the second step.
ACS Publications
2022-08-04
2021-08-04
eng
journal article
AM
http://hdl.handle.net/2237/0002002158
https://nagoya.repo.nii.ac.jp/records/2002158
https://doi.org/10.1021/acs.cgd.1c00398
1528-7483
Crystal Growth & Design
21
8
4506
4515
https://nagoya.repo.nii.ac.jp/record/2002158/files/cg-2021-00398g_R2_Proof_hi.pdf
application/pdf
1.2 MB
2022-08-04
https://nagoya.repo.nii.ac.jp/record/2002158/files/SI_Two-step_nanoparticle_crystallization_MTagawa20210702.pdf
application/pdf
1.6 MB
2022-08-04