Fluorinated liquid crystals: an update

Eugene P. Janulis; Dave W. Osten; Marc D. Radcliffe; J. C. Novack; Miguel Tristani-Kendra; K. A. Epstein; M. Keyes; G. C. Johnson; Pat M. Savu; T. D. Spawn

doi:10.1117/12.60383

15 June 1992 Fluorinated liquid crystals: an update

Eugene P. Janulis, Dave W. Osten, Marc D. Radcliffe, J. C. Novack, Miguel Tristani-Kendra, K. A. Epstein, M. Keyes, G. C. Johnson, Pat M. Savu, T. D. Spawn

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Proceedings Volume 1665, Liquid Crystal Materials, Devices, and Applications; (1992) https://doi.org/10.1117/12.60383
Event: SPIE/IS&T 1992 Symposium on Electronic Imaging: Science and Technology, 1992, San Jose, CA, United States

Abstract

The replacement of a highly fluorinated tail group for one or both of the hydrocarbon tails in thermotropic liquid crystal systems has a dramatic effect on mesomorphic behavior and other physical properties. The nematic phase is greatly suppressed, often totally lost, in all systems that have been examined. A large enhancement of the smectic behavior is usually observed. The preferred phases are (chiral) smectic A and C for systems which incorporate a partially, but highly fluorinated, tail. This creation of smectic C behavior has made these fluorinated materials interesting for use in ferroelectric liquid crystal devices. Fluorination, it is well known, alters certain physical properties of organic compounds. For example, chemical and thermal stability, lower viscosity, and lower birefringence being realized.

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Eugene P. Janulis, Dave W. Osten, Marc D. Radcliffe, J. C. Novack, Miguel Tristani-Kendra, K. A. Epstein, M. Keyes, G. C. Johnson, Pat M. Savu, and T. D. Spawn "Fluorinated liquid crystals: an update", Proc. SPIE 1665, Liquid Crystal Materials, Devices, and Applications, (15 June 1992); https://doi.org/10.1117/12.60383

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