Oriented Linear Self-Assembly of Colloidal Nanocrystals through Regioselective Formation of Hydrogen-Bonded Supramolecular BridgesClick to copy article linkArticle link copied!
- Siyu WanSiyu WanDepartment of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, iChEM, Fudan University, Shanghai 200433, ChinaMore by Siyu Wan
- Yutong GaoYutong GaoDepartment of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, iChEM, Fudan University, Shanghai 200433, ChinaMore by Yutong Gao
- Zhebin ZhangZhebin ZhangState Key Laboratory of Molecule Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200433, ChinaMore by Zhebin Zhang
- Fangyue WuFangyue WuDepartment of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, iChEM, Fudan University, Shanghai 200433, ChinaMore by Fangyue Wu
- Ziyue ZhengZiyue ZhengDepartment of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, iChEM, Fudan University, Shanghai 200433, ChinaMore by Ziyue Zheng
- Hushui ChenHushui ChenDepartment of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, iChEM, Fudan University, Shanghai 200433, ChinaMore by Hushui Chen
- Xiangyun XiXiangyun XiState Key Laboratory of Molecule Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200433, ChinaMore by Xiangyun Xi
- Dong YangDong YangState Key Laboratory of Molecule Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200433, ChinaMore by Dong Yang
- Tongtao Li*Tongtao Li*Email: [email protected]Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, iChEM, Fudan University, Shanghai 200433, ChinaMore by Tongtao Li
- Zhihong NieZhihong NieState Key Laboratory of Molecule Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200433, ChinaMore by Zhihong Nie
- Angang Dong*Angang Dong*Email: [email protected]Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, iChEM, Fudan University, Shanghai 200433, ChinaMore by Angang Dong
Abstract

The linear assembly of nanocrystals (NCs) with orientational order presents a significant challenge in the field of colloidal assembly. This study presents an efficient strategy for assembling oleic acid (OAH)-capped, faceted rare earth NCs─such as nanorods, nanoplates, and nanodumbbells─into flexible chain-like superstructures. Remarkably, these NC chains exhibit a high degree of particle orientation even with an interparticle distance reaching up to 15 nm. Central to this oriented assembly method is the facet-selective adsorption of low-molecular-weight polyethylene glycol (PEG), such as PEG-400 (Mn = 400), onto specific facets of NCs. This regioselectivity is achieved by exploiting the lower binding affinity of OAH ligands on the (100) facets of rare earth NCs, enabling facet-specific ligand displacement and subsequent PEG attachment. By adjusting the solvent polarity, the linear assembly of NCs is induced by the solvophobic effect, which simultaneously promotes the formation of hydrogen-bonded PEG supramolecular bridges. These supramolecular bridges effectively connect NCs and exhibit sufficient robustness to maintain the structural integrity of the chains, despite the large interparticle spacing. Notably, even when coassembling different types of NCs, the resulting multicomponent chains still feature highly selective facet-to-facet connections. This work not only introduces a versatile method for fabricating well-aligned linear superstructures but also provides valuable insights into the fundamental principles governing the facet-selective assembly of NCs in solution.
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This article is cited by 3 publications.
- Hong Tang, Takahiro Kojima, Kenji Kazumi, Kazuhiro Fukami, Hiroshi Sakaguchi. Surface-Modified Ruthenium Nanorods for an Ampere-Level Bifunctional Hydrogen Evolution Reaction/Oxygen Evolution Reaction Electrocatalyst. ACS Applied Materials & Interfaces 2024, 16
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- Xiaojun Ding, Qiang Gao, Yi Su, Jing Chen, Gang Ye. Pi‐Stacking Geometry Directed Supramolecular Secondary Building Units Shaping Hydrogen‐Bonded Frameworks for Intensive NH
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Adsorption. Angewandte Chemie International Edition 2025, 36 https://doi.org/10.1002/anie.202500268
- Xiaojun Ding, Qiang Gao, Yi Su, Jing Chen, Gang Ye. Pi‐Stacking Geometry Directed Supramolecular Secondary Building Units Shaping Hydrogen‐Bonded Frameworks for Intensive NH
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Adsorption. Angewandte Chemie 2025, 36 https://doi.org/10.1002/ange.202500268
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