Janus particles with tunable patch symmetry and their assembly into chiral colloidal clusters
Janus particles, which have an attractive patch on the otherwise repulsive surface, have been commonly employed for anisotropic colloidal assembly. While current methods of particle synthesis allow for control over the patch size, they are generally limited to producing dome-shaped patches with a hi...
| Main Authors: | , , , , , |
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| Format: | Journal Article |
| Language: | English |
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2024
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| Online Access: | https://hdl.handle.net/10356/172984 |
| _version_ | 1824455324752412672 |
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| author | Zhang, Tianran Lyu, Dengping Xu, Wei Feng, Xuan Ni, Ran Wang, Yufeng |
| author2 | School of Chemistry, Chemical Engineering and Biotechnology |
| author_facet | School of Chemistry, Chemical Engineering and Biotechnology Zhang, Tianran Lyu, Dengping Xu, Wei Feng, Xuan Ni, Ran Wang, Yufeng |
| author_sort | Zhang, Tianran |
| collection | NTU |
| description | Janus particles, which have an attractive patch on the otherwise repulsive surface, have been commonly employed for anisotropic colloidal assembly. While current methods of particle synthesis allow for control over the patch size, they are generally limited to producing dome-shaped patches with a high symmetry (C∞). Here, we report on the synthesis of Janus particles with patches of various tunable shapes, having reduced symmetries ranging from C2v to C3v and C4v. The Janus particles are synthesized by partial encapsulation of an octahedral metal-organic framework particle (UiO-66) in a polymer matrix. The extent of encapsulation is precisely regulated by a stepwise, asymmetric dewetting process that exposes selected facets of the UiO-66 particle. With depletion interaction, the Janus particles spontaneously assemble into colloidal clusters reflecting the particles' shapes and patch symmetries. We observe the formation of chiral structures, whereby chirality emerges from achiral building blocks. With the ability to encode symmetry and directional bonding information, our strategy could give access to more complex colloidal superstructures through assembly. |
| first_indexed | 2025-02-19T03:36:24Z |
| format | Journal Article |
| id | ntu-10356/172984 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2025-02-19T03:36:24Z |
| publishDate | 2024 |
| record_format | dspace |
| spelling | ntu-10356/1729842024-01-12T15:32:12Z Janus particles with tunable patch symmetry and their assembly into chiral colloidal clusters Zhang, Tianran Lyu, Dengping Xu, Wei Feng, Xuan Ni, Ran Wang, Yufeng School of Chemistry, Chemical Engineering and Biotechnology Science::Chemistry Chirality Multifunctional Nanoparticle Janus particles, which have an attractive patch on the otherwise repulsive surface, have been commonly employed for anisotropic colloidal assembly. While current methods of particle synthesis allow for control over the patch size, they are generally limited to producing dome-shaped patches with a high symmetry (C∞). Here, we report on the synthesis of Janus particles with patches of various tunable shapes, having reduced symmetries ranging from C2v to C3v and C4v. The Janus particles are synthesized by partial encapsulation of an octahedral metal-organic framework particle (UiO-66) in a polymer matrix. The extent of encapsulation is precisely regulated by a stepwise, asymmetric dewetting process that exposes selected facets of the UiO-66 particle. With depletion interaction, the Janus particles spontaneously assemble into colloidal clusters reflecting the particles' shapes and patch symmetries. We observe the formation of chiral structures, whereby chirality emerges from achiral building blocks. With the ability to encode symmetry and directional bonding information, our strategy could give access to more complex colloidal superstructures through assembly. Ministry of Education (MOE) Published version This project is partially supported by the General Research Fund (No. 17314222, to Y.W.) and Collaborative Research Fund (No. C7075-21G, to Y.W.) from Research Grant Council (RGC) of Hong Kong, Croucher Innovation Award 2019 from the Croucher Foundation of Hong Kong (to Y.W.), and NSFC Excellent Young Scientists Fund 2020 (Hong Kong and Macau, No. 2022206, to Y.W.). T.Z. and D.L. acknowledge the support from university postgraduate fellowship. X.F. and R.N. acknowledge the support from the Academic Research Fund from Singapore Ministry of Education Tier 1 Gant (RG59/21). Publication was made possible in part by support from the HKU Libraries Open Access Author Fund sponsored by the HKU Libraries. 2024-01-08T01:51:34Z 2024-01-08T01:51:34Z 2023 Journal Article Zhang, T., Lyu, D., Xu, W., Feng, X., Ni, R. & Wang, Y. (2023). Janus particles with tunable patch symmetry and their assembly into chiral colloidal clusters. Nature Communications, 14(1), 8494-. https://dx.doi.org/10.1038/s41467-023-44154-6 2041-1723 https://hdl.handle.net/10356/172984 10.1038/s41467-023-44154-6 38129397 2-s2.0-85180224822 1 14 8494 en RG59/21 Nature Communications © 2023 The Author(s). Open Access. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/ licenses/by/4.0/. application/pdf |
| spellingShingle | Science::Chemistry Chirality Multifunctional Nanoparticle Zhang, Tianran Lyu, Dengping Xu, Wei Feng, Xuan Ni, Ran Wang, Yufeng Janus particles with tunable patch symmetry and their assembly into chiral colloidal clusters |
| title | Janus particles with tunable patch symmetry and their assembly into chiral colloidal clusters |
| title_full | Janus particles with tunable patch symmetry and their assembly into chiral colloidal clusters |
| title_fullStr | Janus particles with tunable patch symmetry and their assembly into chiral colloidal clusters |
| title_full_unstemmed | Janus particles with tunable patch symmetry and their assembly into chiral colloidal clusters |
| title_short | Janus particles with tunable patch symmetry and their assembly into chiral colloidal clusters |
| title_sort | janus particles with tunable patch symmetry and their assembly into chiral colloidal clusters |
| topic | Science::Chemistry Chirality Multifunctional Nanoparticle |
| url | https://hdl.handle.net/10356/172984 |
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