Journal
JOURNAL OF MOLECULAR LIQUIDS
Volume 325, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.molliq.2020.115236
Keywords
Phenyltolane; Liquid crystals; Dielectric loss; Miscibility; Microwave
Funding
- Key Research and Development Program of Shaanxi Province [2019ZDLGY04-06, 2020GY-272]
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Two series of new lateral chlorine or methyl substituted high birefringent phenyltolane liquid crystals with saturated alkyl terminal groups have been synthesized and studied. The results show potential advantages of these new compounds in microwave applications.
Two series of new lateral chlorine or methyl substituted high birefringent phenyltolane liquid crystals with saturated alkyl terminal groups (A1-A5 and B1-B6) have been synthesized and their structures were confirmed. The dielectric properties in the frequency range 9-30 GHz, mesomorphic properties and miscibility of these compounds were investigated. The results showed that these new compounds exhibit lower dielectric losses (tan delta(perpendicular to) decreases about 8.0%), higher material efficiency (eta increases about 8.3%) and better low-temperature miscibility compared with the reference compounds C1-C3 with lateral 2,6-difluorines substituted phenyltolane. Overall, the formulations based on these LCs provide potential applications in microwave region. (C) 2020 Elsevier B.V. All rights reserved.
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