Synthesis of Substituted N-Alkenyl Carbazole Derivatives in, 3 and 3-6 Positions on the Carbazol Ring

R. Nasri And A. Haouam**

Departement Of Chemistry, Faculty Of Sciences, Mentouri University, Rte Ain El Bey, 25000 Constantine, (Algeria Dz)

Poly N-Vinylcarbazole (PVK) is one of the most often used polymer host materials for optoelectronic devices based on molecularly doped systems, due to its good film forming properties, relatively high hole mobility, and large highest-occupied molecular orbital, lowest unoccupied-molecular orbital (HOMO-LUMO). Since pure PVK has poor electron-transporting properties1. In this paper, we present an important synthesis of a lot of monomers of alkenyl carbazole unsubstituted and substituted in pendent carbazolic group. These monomers are synthesised, in order to put other functions, to polymerise them and to use them in making charge transfer complexes materials. The N-alkenylcarbazole having a short aliphatic chain has been polymerised before2, with a great difficulty; either by radical, anionic or by Ziegler-Natta systems. The less activity of N-Allyl carbazole is due to the steric effects and to its deficiency in stability by resonance. Aiming to enhance the reactivity of the monomers, we introduced some substituents, attractor of electrons; aiming by this to diminish the influence of the carbazolic group on the double bonds of the aliphatic chain and hopping that we will obtain polymers that manifests some photoelectric activities.

Polyalkenyl carbazole (PACz); Substitution; Radical polymerisation; Low-molar mass; Photoconduction; Copolymerisation; Photoelectrect