New SmAPF Mesogens Designed for Analog Electrooptics Applications
by
Eva D. Korblova 1,2,*
, Edward Guzman 1,2, Joseph E. Maclennan 2,3, Matthew A. Glaser 2,3, Renfan Shao 2,3, Edgardo Garcia 1,2,4, Yongqiang Shen 2,3, Rayshan Visvanathan 2,3, Noel A. Clark 2,3 and David M. Walba 1,2,*
, Edward Guzman 1,2, Joseph E. Maclennan 2,3, Matthew A. Glaser 2,3, Renfan Shao 2,3, Edgardo Garcia 1,2,4, Yongqiang Shen 2,3, Rayshan Visvanathan 2,3, Noel A. Clark 2,3 and David M. Walba 1,2,*
1
Department of Chemistry and Biochemistry, University of Colorado, 215 UCB, Boulder, CO 80309-0215, USA
2
Soft Materials Research Center, Department of Physics, University of Colorado Boulder, 390 UCB, Boulder, CO 80309-0390, USA
3
Department of Physics, University of Colorado, 390 UCB, Boulder, CO 80309-0390, USA
4
Departamento De Quimica, Universidade De Brasilia, Brasilia DF 70910-900, Brazil
*
Authors to whom correspondence should be addressed.
Materials 2017, 10(11), 1284; https://doi.org/10.3390/ma10111284
Received: 19 September 2017 / Revised: 17 October 2017 / Accepted: 18 October 2017 / Published: 9 November 2017
(This article belongs to the Special Issue Liquid Crystal-Assisted Advanced Functional Materials)
We have previously reported the first realization of an orthogonal ferroelectric bent-core SmAPF phase by directed design in mesogens with a single tricarbosilane-terminated alkoxy tail. Given the potentially useful electrooptic properties of this phase, including analog phase-only electrooptic index modulation with optical latching, we have been exploring its “structure space”, searching for novel SmAPF mesogens. Here, we report two classes of these—the first designed to optimize the dynamic range of the index modulation in parallel-aligned cells by lowering the bend angle of the rigid core, and the second expanding the structure space of the phase by replacing the tricarbosilane-terminated alkyl tail with a polyfluorinated polyethylene glycol oligomer.
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Keywords:
ferroelectric liquid crystals; bent-core liquid crystals; polar and achiral liquid crystal phase; SmAPF phase
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MDPI and ACS Style
Korblova, E.D.; Guzman, E.; Maclennan, J.E.; Glaser, M.A.; Shao, R.; Garcia, E.; Shen, Y.; Visvanathan, R.; Clark, N.A.; Walba, D.M. New SmAPF Mesogens Designed for Analog Electrooptics Applications. Materials 2017, 10, 1284.
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