Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 윤홍석 | - |
dc.date.accessioned | 2022-04-12T02:17:40Z | - |
dc.date.available | 2022-04-12T02:17:40Z | - |
dc.date.issued | 2020-08 | - |
dc.identifier.citation | ACS NANO, v. 14, no. 8, page. 9644-9651 | en_US |
dc.identifier.issn | 1936-0851 | - |
dc.identifier.issn | 1936-086X | - |
dc.identifier.uri | https://pubs.acs.org/doi/10.1021/acsnano.0c00668 | - |
dc.identifier.uri | https://repository.hanyang.ac.kr/handle/20.500.11754/169917 | - |
dc.description.abstract | Achieving ordered arrays of nanoparticles (NPs) with controlled packing symmetry and interparticle spacing is of great importance to design complex metamaterials. Herein, we report softness- and size-dependent self-assembly behavior of polystyrene-grafted Au NPs (Au@PS NPs). We varied the core size of Au NPs from 1.9 to 9.6 nm and the number-average molecular weight (M-n) of thiol-terminated polystyrene from 1.8 to 7.9 kg mol(-1). The optimal packing model based on an "effective softness" parameter lambda(eff) that accounts for close-packed and semidilute brush regimes could predict the effective radius of Au@PS NPs (within +/- 9%) for a wide range of PS M-n, grafting density, and Au core size. With increasing lambda(eff), the self-assembled Au@PS NP superlattices undergo a symmetry transition from hexagonal dose packed (hcp) to body-centered tetragonal (bct) to body-centered cubic (bcc). This work demonstrates the effective softness model as a simple but robust tool for the design of NP superlattices with precisely controlled interparticle distance and packing symmetry, both of which are critical for the development of sophisticated materials through control of nanoscale structure. | en_US |
dc.description.sponsorship | This research was supported by the National Research Foundation (NRF) Grant, funded by the Korean Government (NRF-2020M3H4A1A01086888, 2017M3D1A1039553, 2020M31A210101310, and 2019R1I1A1A01058781). We acknowledge additional support for this work from the Research Projects of the KAIST-KUSTAR. H.Y. acknowledges the TJ Park Science Fellowship of POSCO TJ Park Foundation. G.E.S. acknowledges financial support from the National Science Foundation under Award No. NSF DMR 1905487. | en_US |
dc.language.iso | en | en_US |
dc.publisher | AMER CHEMICAL SOC | en_US |
dc.subject | polymer-grafted nanoparticles | en_US |
dc.subject | effective softness | en_US |
dc.subject | self-assembly | en_US |
dc.subject | polymer ligand | en_US |
dc.subject | body-centered tetragonal | en_US |
dc.title | Softness- and Size-Dependent Packing Symmetries of Polymer-Grafted Nanoparticles | en_US |
dc.type | Article | en_US |
dc.identifier.doi | 10.1021/acsnano.0c00668 | - |
dc.relation.journal | ACS NANO | - |
dc.contributor.googleauthor | Yun, Hongseok | - |
dc.contributor.googleauthor | Lee, Young Jun | - |
dc.contributor.googleauthor | Xu, Meng | - |
dc.contributor.googleauthor | Lee, Doh C. | - |
dc.contributor.googleauthor | Stein, Gila E. | - |
dc.contributor.googleauthor | Kim, Bumjoon J. | - |
dc.relation.code | 2020051328 | - |
dc.sector.campus | S | - |
dc.sector.daehak | COLLEGE OF NATURAL SCIENCES[S] | - |
dc.sector.department | DEPARTMENT OF CHEMISTRY | - |
dc.identifier.pid | yunhs | - |
dc.identifier.researcherID | AAC-8146-2022 | - |
dc.identifier.orcid | https://orcid.org/0000-0003-0497-6185 | - |
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