Design of Aromatic Helical Polymers for STM Visualization: Imaging of Single and Double Helices with a Pattern of π–π Stacking |
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| Authors: | Dr. Junyan Zhu Prof. Zeyuan Dong Prof. Shengbin Lei Dr. Lili Cao Prof. Bing Yang Dr. Wenfang Li Yuanchao Zhang Prof. Junqiu Liu Prof. Jiacong Shen |
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| Affiliation: | 1. State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012 (P.R. China);2. Key Laboratory of Micro‐systems and Micro‐structures Manufacturing, Ministry of Education, Harbin Institute of Technology, 2 Yikuang Street, Nan Gang District, Harbin 150080 (P.R. China) |
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| Abstract: | From scanning tunneling microscopy (STM) images of rationally designed helical polymers with a pattern of π–π stacking, we successfully identified the single‐ and double‐helical superstructures. The STM images of the helical structures revealed the smallest helical architecture (diameter ca. 1.3 nm) that has been seen so far. Furthermore, the interconversion of single and double helices was further underpinned by experimental analyses. Significantly, the formation of double helices induced different supramolecular chirality to that observed for the single helices. |
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| Keywords: | aromatic polymers dimerization helical structures π interactions scanning tunneling microscopy |
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