Issue 92, 2022

Charge transport in liquid crystal network of terthiophene-siloxane block molecules

Abstract

In their thermotropic liquid-crystalline state, molecular semiconductors can show charge transport with high carrier mobility. Polymerization of the corresponding mesogens into a cross-linked network often deteriorates the charge transport. Here, we report that mesogens consisting of a terthiophene core and discrete oligodimethylsiloxane side-chains terminated by acrylate units can be photopolymerized in the columnar phase with retention of nanoscale order and charge transport capabilities. We argue that the strong tendency for microphase segregation protects the semiconducting block from reacting with free radicals during polymerization. This work provides new insights into the design of electroactive materials with charge transport properties.

Graphical abstract: Charge transport in liquid crystal network of terthiophene-siloxane block molecules

Supplementary files

Article information

Article type
Communication
Submitted
06 Sept. 2022
Accepted
24 Okt. 2022
First published
01 Nov. 2022
This article is Open Access
Creative Commons BY-NC license

Chem. Commun., 2022,58, 12819-12822

Charge transport in liquid crystal network of terthiophene-siloxane block molecules

H. Sakaino, S. C. J. Meskers, E. W. Meijer and G. Vantomme, Chem. Commun., 2022, 58, 12819 DOI: 10.1039/D2CC04911B

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