Abstract
A comparative analysis of the structure and properties of donor–acceptor star-shaped compounds based on oligothiophene with electron-withdrawing dicyanovinyl groups and a different electron-donating branching center—planar 9-phenyl-9H-carbazole and propeller-shaped triphenylamine—has been carried out. It is shown that the absorption maxima in the spectra of 9-phenyl-9H-carbazole derivatives shift to shorter wavelengths, the HOMO energy decreases, and the LUMO energy increases. Moreover, in contrast to propeller-shaped triphenylamine-based compounds, which do not form ordered states, the T-shaped branched molecules based on carbazole form highly ordered crystal structures with different symmetry.
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Original Russian Text © A.V. Bakirov, A.N. Solodukhin, Yu.N. Luponosov, E.A. Svidchenko, M.A. Obrezkova, S.M. Peregudova, M.A. Shcherbina, S.A. Ponomarenko, S.N. Chvalun, 2017, published in Rossiiskie Nanotekhnologii, 2017, Vol. 12, Nos. 7–8.
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Bakirov, A.V., Solodukhin, A.N., Luponosov, Y.N. et al. The Effect of Star-Shaped Oligothiophenes with a Carbazole Core on Their Structural and Optical Properties. Nanotechnol Russia 12, 385–394 (2017). https://doi.org/10.1134/S199507801704005X
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DOI: https://doi.org/10.1134/S199507801704005X