title: Design of aromatic helical polymers for STM visualization: imaging of single and double helices with a pattern of π-π stacking.
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.
authors: State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012 (P.R. China).
authors: Junyan
authors: J
authors: Zhu
authors: Zeyuan
authors: Z
authors: Dong
authors: Shengbin
authors: S
authors: Lei
authors: Lili
authors: L
authors: Cao
authors: Bing
authors: B
authors: Yang
authors: Wenfang
authors: W
authors: Li
authors: Yuanchao
authors: Y
authors: Zhang
authors: Junqiu
authors: J
authors: Liu
authors: Jiacong
authors: J
authors: Shen
mesh_terms: D016252:Microscopy, Scanning Tunneling / Q000379:methods*; D015394:Molecular Structure
keywords: aromatic polymers; dimerization; helical structures; scanning tunneling microscopy; π interactions