American Chemical Society
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Structure–Property Correlation behind the High Mobility of Carbazolocarbazole

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journal contribution
posted on 2018-05-16, 00:00 authored by Miriam Más-Montoya, Stamatis Georgakopoulos, José Pedro Cerón-Carrasco, José Pérez, Alberto Tárraga, David Curiel
A comparative study of carbazolocarbazole isomers and their respective N-alkyl derivatives confirms the good performance of carbazolo­[2,1-a]­carbazole as hole-transporting material in organic field effect transistors. The azaphenacene structure of this molecule forms a dense packing promoted by particularly short longitudinal shifts between molecules establishing face-to-face and edge-to-face interactions. Computational calculations have determined an almost isotropic 2D transport environment within a lamellar structure. This favorable solid state arrangement, in combination with appropriate interfacial layers, has led to a high mobility (1.3 cm2 V–1 s–1) that validates the aptitude of this molecular material as an organic semiconductor.