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Updated: Apr 19, 2026

Self-assembling Morphologies Obtained from Helical Polycarbodiimide Copolymers and Their Triazole Derivatives
Published on: February 7, 2017
Effect of the ortho alkylation of perylene bisimides on the alignment and self-assembly properties
Debarshi Dasgupta1, Amol M Kendhale1, Michael G Debije1
1Laboratory of Functional Organic Materials and Devices, Eindhoven University of Technology P.O. Box 513, 5600 MB, Eindhoven (The Netherlands)
Abstract:
The effect of the ortho alkylation of perylene bisimides on the alignment and self-assembly properties has been studied. It was found that the dichroic properties of perylene bisimides in a liquid crystal host can be reversed with a single synthetic step by ortho alkylation. Furthermore, a solvent-induced growth of ultralong organic n-type semiconducting fibrils from non-ortho-alkylated perylene bisimide was observed. Ortho substitution of the perylene bisimide core alters the mode of fibrillar growth, leading to isotropic crystallization.
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