Issue 17, 2021

The liquid crystal Click procedure for oligothiophene-tethered phthalocyanines – self-assembly, alignment and photocurrent

Abstract

A series of star-shaped liquid crystals (LCs) with a phthalocyanine donor core, oligothiophene antennae and fullerene acceptors have been successfully prepared. This hierarchical self-assembly results in a nanosegregated helical donor–acceptor–antennae LC-system promoted by the recently discovered Click procedure. This model system reveals all photophysical prerequisites for energy conversion, charge generation and transport. Uniform amorphous thin films of 150 nm could be produced by bar-coating. Annealing did not only induce the formation of columns via the Click procedure but also partially homeotropically aligned the non-clearing sample in a sandwich geometry (ITO and Ag/MoO3). This has been confirmed by microscopic studies and the measurement of photocurrent, which increased by a factor of 300 after the annealing step.

Graphical abstract: The liquid crystal Click procedure for oligothiophene-tethered phthalocyanines – self-assembly, alignment and photocurrent

Supplementary files

Article information

Article type
Paper
Submitted
12 Febr. 2021
Accepted
15 Marts 2021
First published
16 Marts 2021

J. Mater. Chem. C, 2021,9, 5689-5698

The liquid crystal Click procedure for oligothiophene-tethered phthalocyanines – self-assembly, alignment and photocurrent

M. Dechant, M. Lehmann, G. Uzurano, A. Fujii and M. Ozaki, J. Mater. Chem. C, 2021, 9, 5689 DOI: 10.1039/D1TC00710F

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