Tuning molecular-level polymer conformations enables dynamic control over both the interfacial behaviors of Ag nanocubes and their assembled metacrystals
In surface chemistry-directed nanoparticle self-assembly, it remains challenging to continuously modulate nanoparticle behavior at the oil/water interface without replacing surface functionality or particle morphology. Here, we utilize solvent-tunable molecular-level polymer conformation changes to...
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| Formatua: | Journal Article |
| Hizkuntza: | English |
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2020
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| Sarrera elektronikoa: | https://hdl.handle.net/10356/143424 |
| _version_ | 1826122921116958720 |
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| author | Yang, Yijie Lee, Yih Hong Lay, Chee Leng Ling, Xing Yi |
| author2 | School of Physical and Mathematical Sciences |
| author_facet | School of Physical and Mathematical Sciences Yang, Yijie Lee, Yih Hong Lay, Chee Leng Ling, Xing Yi |
| author_sort | Yang, Yijie |
| collection | NTU |
| description | In surface chemistry-directed nanoparticle self-assembly, it remains challenging to continuously modulate nanoparticle behavior at the oil/water interface without replacing surface functionality or particle morphology. Here, we utilize solvent-tunable molecular-level polymer conformation changes to achieve "multiple metacrystals using one nanoparticle with one chemical functionality". We use Ag nanocubes functionalized with a mixed monolayer of thiol-terminated poly(ethylene glycol) (PEG) and hexadecanethiol (C16). We continuously modulate PEG conformation from swollen to coiled states by decreasing solvent polarity, whereas C16 promotes nanocube dispersion in organic carrier solvents. Such PEG conformation changes drive Ag nanocubes to adopt tilted, standing, and planar configurations at the oil/water interface, with their interfacial positions changing from halfway across the interface to almost immersed within the oil phase. We also identify four specific polarities which enable Ag nanocubes to assemble into large-area metacrystals with linear, hexagonal, and square close-packed lattices. Our work establishes an innovative strategy to achieve robust tunability of nanoparticle interfacial behavior and unprecedented modulation of metacrystal structure. |
| first_indexed | 2024-10-01T05:56:09Z |
| format | Journal Article |
| id | ntu-10356/143424 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:56:09Z |
| publishDate | 2020 |
| record_format | dspace |
| spelling | ntu-10356/1434242023-02-28T19:45:06Z Tuning molecular-level polymer conformations enables dynamic control over both the interfacial behaviors of Ag nanocubes and their assembled metacrystals Yang, Yijie Lee, Yih Hong Lay, Chee Leng Ling, Xing Yi School of Physical and Mathematical Sciences Institute of Materials Research and Engineering, A*STAR Science::Physics Interfaces Lipids In surface chemistry-directed nanoparticle self-assembly, it remains challenging to continuously modulate nanoparticle behavior at the oil/water interface without replacing surface functionality or particle morphology. Here, we utilize solvent-tunable molecular-level polymer conformation changes to achieve "multiple metacrystals using one nanoparticle with one chemical functionality". We use Ag nanocubes functionalized with a mixed monolayer of thiol-terminated poly(ethylene glycol) (PEG) and hexadecanethiol (C16). We continuously modulate PEG conformation from swollen to coiled states by decreasing solvent polarity, whereas C16 promotes nanocube dispersion in organic carrier solvents. Such PEG conformation changes drive Ag nanocubes to adopt tilted, standing, and planar configurations at the oil/water interface, with their interfacial positions changing from halfway across the interface to almost immersed within the oil phase. We also identify four specific polarities which enable Ag nanocubes to assemble into large-area metacrystals with linear, hexagonal, and square close-packed lattices. Our work establishes an innovative strategy to achieve robust tunability of nanoparticle interfacial behavior and unprecedented modulation of metacrystal structure. Agency for Science, Technology and Research (A*STAR) Ministry of Education (MOE) Nanyang Technological University National Research Foundation (NRF) Accepted version X.Y.L. is thankful for the financial support from the National Research Foundation, Singapore (NRF-NRFF2012-04), Singapore Ministry of Education, Tier 1 (RG21/16) and Tier 2 (MOE2016-T2-1-043) grants, and Nanyang Technological University. C.L.L. acknowledges support from an A*STAR Graduate Scholarship, Singapore. 2020-09-01T01:20:36Z 2020-09-01T01:20:36Z 2017 Journal Article Yang, Y., Lee, Y. H., Lay, C. L., & Ling, X. Y. (2017). Tuning molecular-level polymer conformations enables dynamic control over both the interfacial behaviors of Ag nanocubes and their assembled metacrystals. Chemistry of Materials, 29(14), 6137-6144. doi:10.1021/acs.chemmater.7b02211 0897-4756 https://hdl.handle.net/10356/143424 10.1021/acs.chemmater.7b02211 2-s2.0-85025843162 14 29 6137 6144 en Chemistry of Materials This document is the Accepted Manuscript version of a Published Work that appeared in final form in Chemistry of Materials, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acs.chemmater.7b02211 application/pdf |
| spellingShingle | Science::Physics Interfaces Lipids Yang, Yijie Lee, Yih Hong Lay, Chee Leng Ling, Xing Yi Tuning molecular-level polymer conformations enables dynamic control over both the interfacial behaviors of Ag nanocubes and their assembled metacrystals |
| title | Tuning molecular-level polymer conformations enables dynamic control over both the interfacial behaviors of Ag nanocubes and their assembled metacrystals |
| title_full | Tuning molecular-level polymer conformations enables dynamic control over both the interfacial behaviors of Ag nanocubes and their assembled metacrystals |
| title_fullStr | Tuning molecular-level polymer conformations enables dynamic control over both the interfacial behaviors of Ag nanocubes and their assembled metacrystals |
| title_full_unstemmed | Tuning molecular-level polymer conformations enables dynamic control over both the interfacial behaviors of Ag nanocubes and their assembled metacrystals |
| title_short | Tuning molecular-level polymer conformations enables dynamic control over both the interfacial behaviors of Ag nanocubes and their assembled metacrystals |
| title_sort | tuning molecular level polymer conformations enables dynamic control over both the interfacial behaviors of ag nanocubes and their assembled metacrystals |
| topic | Science::Physics Interfaces Lipids |
| url | https://hdl.handle.net/10356/143424 |
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