Nissan Chemical Industries Limited

Solvay Sa

Alexandre Ferrand

Jonathan Maunoury

Dominique Bascour

Enrico Orselli

The present invention relates to a novel triscarbazole compound having substituent on N-phenyl, which can be represented by Formula (I). wherein Ris selected from the group consisting of hydrogen, halogen or alkyl or alkoxy group having 1 to 20 carbon atoms wherein at least one hydrogen atom is optionally replaced by halogen; R, R, R, Rand Rare any of substituents other than hydrogen wherein at least two of Rand Rmay further form a fused ring; and i, j, k, l and m are same or different at each occurrence and represent an integer from 0 to 4, with the proviso that when Ris hydrogen, i is not 0. By introduction of the substituent on N-phenyl, the device efficiency, stability and lifetime can be increased while maintaining the solubility. These compounds can be used in various organic devices such as organic light emitting diodes, photovoltaic cells or organic semiconductor devices. 

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Alexandre Ferrand