Structure–Property Correlation behind the High Mobility of Carbazolocarbazole
2018
Más-Montoya, Miriam | Georgakopoulos, Stamatis | Cerón-Carrasco, José Pedro | Pérez, José | Tárraga, Alberto | Curiel, David
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.
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