Structure properties relationships of liquid crystal bent core organic semiconductors based on benzo[2,1-b:3,4-b′]dithiophene-4,5-dione

We report the synthesis of a new diketone bridged dithiophene end-capped with the mesogenic functionalities: 2,7′-bis(alkoxy-biphenyl) and 2,7′-bis(alkoxy-phenyl)-benzo[2,1-b:3,4-b′]dithiophene-4,5-dione. Optical and electrochemical properties in solution were investigated by UV-visible absorption a...

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Bibliographic Details
Published in:Journal of materials chemistry 2012, Vol.22 (43), p.23159-23168
Main Authors: Aboubakr, Hecham, Tamba, M.-Gabriela, Diallo, Abdou Karim, Videlot-Ackermann, Christine, Belec, Lénaïk, Siri, Olivier, Raimundo, Jean-Manuel, Mehl, Georg H., Brisset, Hugues
Format: Article
Language:English
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Chemical Sciences
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Summary:We report the synthesis of a new diketone bridged dithiophene end-capped with the mesogenic functionalities: 2,7′-bis(alkoxy-biphenyl) and 2,7′-bis(alkoxy-phenyl)-benzo[2,1-b:3,4-b′]dithiophene-4,5-dione. Optical and electrochemical properties in solution were investigated by UV-visible absorption and cyclic voltammetry. Liquid crystal properties of these new materials were investigated by differential scanning calorimetry, optical polarizing microscopy, and X-ray diffraction studies. Both compounds exhibit layered phases though there are differences in the organisation of the phase structures. Thin films were implemented as active layers into organic thin-film transistors to evaluate the charge transport properties.
ISSN:0959-9428
1364-5501
DOI:10.1039/c2jm34803a