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| Main Authors: | , , , , , , , , , , , , , , |
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| Format: | Preprint |
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2024
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2402.12215 |
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| _version_ | 1866910336027721728 |
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| author | Pham, Minh Nhat Su, Chun-Jen Huang, Yu-Ching Lin, Kun-Ta Huang, Ting-Yu Lai, Yu-Ying Wang, Chen-An Liaw, Yong-Kang Lin, Ting-Han Jeng, U-Ser Ruan, Jrjeng Luo, Chan Huang, Ye Bazan, Guillermo C. Hsu, Ben B. Y. |
| author_facet | Pham, Minh Nhat Su, Chun-Jen Huang, Yu-Ching Lin, Kun-Ta Huang, Ting-Yu Lai, Yu-Ying Wang, Chen-An Liaw, Yong-Kang Lin, Ting-Han Jeng, U-Ser Ruan, Jrjeng Luo, Chan Huang, Ye Bazan, Guillermo C. Hsu, Ben B. Y. |
| contents | Intermolecular interactions are crucial in determining the morphology of solution-processed semiconducting polymer thin films. However, these random interactions often lead to disordered or short-range ordered structures. Achieving long-range order in these films has been a challenge due to limited control over microscopic interactions in current techniques. Here, we present a molecular-level methodology that leverages spatial matching of intermolecular dynamics among solutes, solvents, and substrates to induce directional molecular assembly in weakly bonded polymers. Within the optimized dynamic scale of 2.5 Å between polymer side chains and self-assembled monolayers (SAMs) on nanogrooved substrates, our approach transforms random aggregates into unidirectional fibers with a remarkable increase in the anisotropic stacking ratio from 1 to 11. The Flory-Huggins-based molecular stacking model accurately predicts the transitioning order on various SAMs, validated by morphologic and spectroscopic observations. The enhanced structural ordering spans over 3 orders of magnitude in length, raising from the smallest 7.3 nm random crystallites to >14 um unidirectional fibers on sub-millimeter areas. Overall, this study provides insights into the control of complex intermolecular interactions and offers enhanced molecular-level controllability in solution-based processes. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2402_12215 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Forming Long-range Order of Semiconducting Polymers through Liquid-phase Directional Molecular Assemblies Pham, Minh Nhat Su, Chun-Jen Huang, Yu-Ching Lin, Kun-Ta Huang, Ting-Yu Lai, Yu-Ying Wang, Chen-An Liaw, Yong-Kang Lin, Ting-Han Jeng, U-Ser Ruan, Jrjeng Luo, Chan Huang, Ye Bazan, Guillermo C. Hsu, Ben B. Y. Soft Condensed Matter Intermolecular interactions are crucial in determining the morphology of solution-processed semiconducting polymer thin films. However, these random interactions often lead to disordered or short-range ordered structures. Achieving long-range order in these films has been a challenge due to limited control over microscopic interactions in current techniques. Here, we present a molecular-level methodology that leverages spatial matching of intermolecular dynamics among solutes, solvents, and substrates to induce directional molecular assembly in weakly bonded polymers. Within the optimized dynamic scale of 2.5 Å between polymer side chains and self-assembled monolayers (SAMs) on nanogrooved substrates, our approach transforms random aggregates into unidirectional fibers with a remarkable increase in the anisotropic stacking ratio from 1 to 11. The Flory-Huggins-based molecular stacking model accurately predicts the transitioning order on various SAMs, validated by morphologic and spectroscopic observations. The enhanced structural ordering spans over 3 orders of magnitude in length, raising from the smallest 7.3 nm random crystallites to >14 um unidirectional fibers on sub-millimeter areas. Overall, this study provides insights into the control of complex intermolecular interactions and offers enhanced molecular-level controllability in solution-based processes. |
| title | Forming Long-range Order of Semiconducting Polymers through Liquid-phase Directional Molecular Assemblies |
| topic | Soft Condensed Matter |
| url | https://arxiv.org/abs/2402.12215 |