Photoinduced optical functionalism of branched azophenylcarbazoles in molecular glass matrices

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Conference Proceeding
Molecular Crystals and Liquid Crystals, 2012, 556 pp. 124 - 134
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A new guest-host composition of 3-(4-nitrophenyl)azo-9-(2-ethyl)hexyl-2-(2- ethyl) hexyloxycarbazole as chromophore and 2,2-bis{4-[2-hydroxy-9-(carbazol-9- yl)-5- (carbazol-9-methyl)-4,7-dioxanonyloxy]phenyl}propane (molecular glass) as host for all-optical poling application was developed and investigated. A comparison between molecular glass and commonly used bisphenol Z polycarbonate as host showed a slightly better ability for the molecular glass to keep the azophenylcarbazole molecules oriented. Erasure while reading the non-centrosymmetry created is demonstrated and explained. Using an adopted model orientational diffusion coefficient, lifetime of cis isomer and probabilities of redistribution were evaluated. © Taylor & Francis Group, LLC.
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