Syntheses and mesomorphic properties of laterally fluorinatedphenyl isothiocyanatotolanes and their high birefringent mixtures

• Autorzy: Dziaduszek J. , Dąbrowski R. , Ziółek A. , Gauza S. , Wu S. T.
• Języki publikacji: EN

Abstrakty

EN

Syntheses and mesomorphic properties of di-, tri- and tetrafluorosubstituted 4'-(4-alkylphenyl)-4-isothiocyanatotolanes are described. Four fluorine substituted compounds in the position 2', 3', 3, and 5 show stronger nematic character than difluorosubstituted ones in the position 3, 5 or 2', 3'. Example of high birefringence nematic mixture and its properties are given.

Słowa kluczowe

EN

liquid crystals isothiocyanatophenyltolanes; fluorine substitution; phase transition; enthalpy transition; high birefringence nematic mixture

• Wydawca: Stowarzyszenie Elektryków Polskich ; Polska Akademia Nauk ; Wojskowa Akademia Techniczna im. Jarosława Dąbrowskiego
• Czasopismo: Opto-Electronics Review
• Rocznik: 2009
• Tom: Vol. 17, No. 1
• Strony: 20--24
• Opis fizyczny: Bibliogr. 10 poz.

Twórcy

autor

Dziaduszek J.

autor

Dąbrowski R.

autor

Ziółek A.

autor

Gauza S.

autor

Wu S. T.

• Institute of Chemistry, Military University of Technology, 00-908 Warsaw, Poland

Bibliografia

• [1] J. Harriman, S. Gauza, S.T. Wu, D. Wick, B. Bagwell, T. Martinez, D. Payne, and S. Serati: Transmissive spatial light modulators with high figure-of-merit liquid crystals for foveated imaging applications. Proc. SPIE 6135, 61350C, 2006.
• [2] S. Gauza, C.H. Wen, S.T. Wu, R. Dąbrowski, C.S. Hsu, C.O. Catanescu, and L.C. Chien: High birefringence liquid crystals for photonic applications. Proc. SPIE 5947, 51-64, 2005.
• [3] S. Gauza, X. Zhu, S.T. Wu, W. Piecek, and R. Dąbrowski, Fast switching liquid crystals for colour-sequential LCDs. J. Display Techn. 3, 250-252, 2007.
• [4] S. Gauza, S.T. Wu, A. Spadło, and R. Dąbrowski, High performance room temperature nematic liquid crystals based on laterally fluorinated isothiocyanatotolanes. J. Display Techn. 2, 247-253, 2006.
• [5] R. Dąbrowski, J. Przedmojski, A. Spadło, J. Dziaduszek, and M. Tykarska: Features of the smectic phases in some strongly polar biphenyls and tolanes. Phase Transit. 77, 1103-1110, 2004.
• [6] R. Dąbrowski, J. Dziaduszek, A. Ziółek, Ł. Szczuciński, Z. Stolarz, G. Sasnouski, V. Bezborodov, W. Lapanik, S. Gauza, and S.T. Wu: Low viscosity, high birefringence liquid crystalline compounds and mixtures. Opto-Electron. Rev. 15, 47-51, 2007.
• [7] A. Spadło, R. Dąbrowski, M. Filipowicz, M. Bogun, S. Gauza, and S.T. Wu: Synthesis, mesomorphic and optical properties of 4'-alkyl-3,5-difluoro-4-isothiocyanatotolanes and 4'-alkylphenyl-3,5-difluoro-4-isothiocyanatotolanes. Conf. Proc. 16th Conf. on Liquid Crystals, Stare Jabłonki 2005, Poland, 53-58, 2007.
• [8] P. Kula, A. Spadło, J. Dziaduszek, and R. Dąbrowski, Synthesis and mesomorphic properties of therphenyls. Opto-Electron. Rev., 16, 379-389, 2008.
• [9] S. Gauza, Y. Zhao, T. Le Cor, S.T. Wu, J. Dziaduszek, G. Sasnouski, R. Dąbrowski, and L. Chy Chien: Enhancing bi-refringence by doping fluorinated phenyltolanes. J. Display Techn. 2, 327-332, 2006.
• [10] R. Dąbrowski, J. Dziaduszek, and A. Ziółek, Liq. Cryst. (in preparation)