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Updated: Feb 11, 2026
An Electrochemical Cholesteric Liquid Crystalline Device for Quick and Low-Voltage Color Modulation
Published on: February 27, 2019
Color-Tuned Electroluminescence from Columnar Liquid Crystalline Alkyl Arenecarboxylates
Thomas Hassheider1, Stephan A Benning1, Heinz-Siegfried Kitzerow1
1Fachbereich Chemie, Universität Paderborn Warburger Strasse 100, 33098 Paderborn (Germany).
Abstract:
Simple ester derivatives of polycyclic arenes offer access to light-emitting diodes of nearly any visible color by making use of the good charge-transport properties of the columnar liquid crystals of these derivatives. The picture shows the orange-red electroluminescence of a light-emitting diode containing the perylene 3,4,9,10-tetracarboxylic acid ethyl ester (structure shown, R=Et). Through use of multiple layers of different esters light-emitting diodes with almost white luminescence can be obtained.
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