Abstract—Large single-crystal films of p-sexiphenyl and its derivative with terminal trimethylsilyl substituents are grown under physical-vapor-transport conditions. The structure of the single-crystal films is studied by X-ray diffraction. In the crystals of the trimethylsilyl derivative there is a significant shift of molecular π systems relative to each other inside the (001) layers with “herringbone” packing in comparison with the crystal structure of p-sexiphenyl. The optical absorption and photoluminescence spectra of the studied substances in tetrahydrofuran solutions are obtained and analyzed. The presence of –Si(CH3)3 terminal substituents in the molecule is found to cause a slight bathochromic shift in the absorption and photoluminescence spectra of the solutions.
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Funding
This work was supported by the Russian Foundation for Basic Research (grant no. 19-32-90145) in terms of growing p-sexiphenyl and the Ministry of Science and Higher Education of the Russian Federation within the framework of the State Assignment of the Federal Research Center “Crystallography and Photonics” of the Russian Academy of Sciences in terms of growing crystals of trimethylsilyl derivative p-sexphenyl using equipment of the Center for Collective Use of the Federal Research Center “Crystallography and Photonics,” Russian Academy of Sciences, (project RFMEF162119X0035). Recording of the absorption and luminescence spectra was carried out with support of the Ministry of Education and Science of the Russian Federation using scientific equipment of the Center for Polymer Research, Institute of Synthetic Polymer Materials, Russian Academy of Sciences.
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Postnikov, V.A., Kulishov, A.A., Borshchev, O.V. et al. Growth of p-Sexiphenyl Crystals and its Trymethylsilyl Derivative from the Vapor Phase. J. Surf. Investig. 15, 24–27 (2021). https://doi.org/10.1134/S1027451021010134
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DOI: https://doi.org/10.1134/S1027451021010134