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Adamantane substitutions: a path to high-performing, soluble, versatile and sustainable organic semiconducting materials

Abstract

Novel ethyladamantyl solubilization side groups were found to induce π-π interactions between the conjugated cores through adamantyl–adamantyl stacking in soluble diketopyrrolopyrrole (DPP) derivatives. The closeness of the DPP cores amplifies charge transfer in the material, as far as π-π interaction is a dominant charge-hopping pathway. As a result, tenfold enhancement of hole mobilities exceeding those obtained for insoluble derivatives was reached. Moreover, due to high crystallinity and co-planarity of the conjugated cores, electron transfer was preserved with a mobility of 0.2 cm2/(V s) for dithiophene-DPP. At the same time, the material remained soluble, which is a significant advantage for purification and processing. This approach can be universally applied for many types of semiconducting organic materials containing the imide motive, where solubilization is achieved by side-group substitution.

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Publication details

The article was received on 22 Nov 2016, accepted on 13 Apr 2017 and first published on 13 Apr 2017


Article type: Paper
DOI: 10.1039/C6TC05076J
Citation: J. Mater. Chem. C, 2017, Accepted Manuscript
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    Adamantane substitutions: a path to high-performing, soluble, versatile and sustainable organic semiconducting materials

    A. Kovalenko, C. Yumusak, P. Heinrichova, S. Stritesky, L. Fekete, M. Vala, M. Weiter, N. S. Sariciftci and J. Krajčovič, J. Mater. Chem. C, 2017, Accepted Manuscript , DOI: 10.1039/C6TC05076J

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