Symmetrically backfolded molecules emulating the self-similar features of a Sierpinski triangle

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

2 Scopus Citations
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Author(s)

  • Jie-Ying Hu
  • Yan-Qiong Sun
  • Shengxian Cheng
  • Jun He
  • Matthias Zeller
  • Wai-Yeung Wong

Related Research Unit(s)

Detail(s)

Original languageEnglish
Pages (from-to)6032-6037
Journal / PublicationOrganic & Biomolecular Chemistry
Volume17
Issue number24
Online published30 May 2019
Publication statusPublished - 28 Jun 2019

Abstract

We synthesized self-similar molecules (G3 and G2; based on phenylalkynyl backbones) with symmetrically backfolded shapes inspired by the famous fractal of a Sierpinski triangle. Unlike the more traditional, starburst dendrimers, the centripetal-shaped Sierpinski molecules feature side branches symmetrically bent away from the growth direction of the main branch, thus contrasting the natural-tree shape. Molecule G3 exhibits three distinct levels of the structural hierarchy comprising the primary, secondary and tertiary branches, while the smaller G2 contains only features of the 1st and 2nd orders. In spite of the much larger conjugated backbone of G3, its solution UV-vis absorption and fluorescence exhibit no red shift relative to G2. In a test of nitrobenzene sensing, a thin film of G3 deposited from THF was more sensitively quenched in fluorescence than the smaller G2.

Citation Format(s)

Symmetrically backfolded molecules emulating the self-similar features of a Sierpinski triangle. / Hu, Jie-Ying; Sun, Yan-Qiong; Xiao, Ran; Cheng, Shengxian; He, Jun; Zeller, Matthias; Wong, Wai-Yeung; Xu, Zhengtao.

In: Organic & Biomolecular Chemistry, Vol. 17, No. 24, 28.06.2019, p. 6032-6037.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal