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Updated: Feb 25, 2026

Orientational Transition in a Liquid Crystal Triggered by the Thermodynamic Growth of Interfacial Wetting Sheets
Published on: May 15, 2017
Concentration-dependent rhombitrihexagonal tiling patterns at the liquid/solid interface
Vladimir Stepanenko1, Ramesh Kandanelli1, Shinobu Uemura2
1Institut für Organische Chemie and Center for Nanosystems Chemistry , Universität Würzburg Am Hubland , 97074 Würzburg , Germany . Email: wuerthner@chemie.uni-wuerzburg.de ;
Abstract:
We report STM investigations on a linear oligophenyleneethylene (OPE)-based self-assembling Pd(ii) complex 1 that forms highly-ordered concentration dependent patterns on HOPG. At high concentration, 2D lamellar structures are observed whereas the dilution of the system below a critical concentration leads to the formation of visually attractive rhombitrihexagonal Archimedean tiling arrangements featuring three different kinds of polygons: triangles, hexagons and rhombi. The key participation of the Cl ligands attached to the Pd(ii) centre in multiple C-H···Cl interactions was demonstrated by comparing the patterns of 1 with those of an analogous non-metallic system 2.
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