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Issue 28, 2017
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Synthesis and characterization of carbazolo[2,1-a]carbazole in thin film and single crystal field-effect transistors

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Abstract

The synthesis of a hexacyclic fused polyheteroaromatic system, namely carbazolo[2,1-a]carbazole, via a simple two-step route is reported. Additionally, the characterization of its electronic structure is described, corresponding to a very stable molecule that is also transparent to visible light. Solid state packing is determined by X-ray diffraction analysis which, in combination with the computational calculation of the charge transfer parameters, reveals an adequate molecular arrangement to achieve a low anisotropic environment for charge transport. This π-conjugated system is used as an organic semiconductor for the fabrication of thin film and single crystal organic field-effect transistors (OFETs). Furthermore, the evaluation of different gate dielectrics results in transistors with very good hole mobilities and low operating voltages. In agreement with these results, carbazolo[2,1-a]carbazole becomes one of the best organic semiconductors belonging to the family of carbazole-based azaphenacenes.

Graphical abstract: Synthesis and characterization of carbazolo[2,1-a]carbazole in thin film and single crystal field-effect transistors

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Article information


Submitted
15 May 2017
Accepted
21 Jun 2017
First published
22 Jun 2017

J. Mater. Chem. C, 2017,5, 7020-7027
Article type
Paper

Synthesis and characterization of carbazolo[2,1-a]carbazole in thin film and single crystal field-effect transistors

M. Más-Montoya, J. P. Cerón-Carrasco, S. Hamao, R. Eguchi, Y. Kubozono, A. Tárraga and D. Curiel, J. Mater. Chem. C, 2017, 5, 7020
DOI: 10.1039/C7TC02139A

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