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Design of Aromatic Helical Polymers for STM Visualization: Imaging of Single and Double Helices with a Pattern of π–π Stacking
Author(s) -
Zhu Junyan,
Dong Zeyuan,
Lei Shengbin,
Cao Lili,
Yang Bing,
Li Wenfang,
Zhang Yuanchao,
Liu Junqiu,
Shen Jiacong
Publication year - 2015
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201410975
Subject(s) - stacking , scanning tunneling microscope , supramolecular chemistry , crystallography , helix (gastropod) , chirality (physics) , materials science , supramolecular chirality , polymer , chemistry , nanotechnology , physics , crystal structure , ecology , nambu–jona lasinio model , chiral symmetry breaking , organic chemistry , quantum mechanics , quark , snail , composite material , biology
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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