1972
DOI: 10.1080/15421407208083839
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Estimation of Nematic-Isotropic Points of Nematic Liquid Crystals

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1973
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Cited by 45 publications
(8 citation statements)
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“…Central groups that provide linearity to the shape of the molecule have been found to increase the thermal stability as the polarity or polarisability increases for the central linkage component [11]. It has been shown that, in the absence of a central group that provides linearity or at the least planarity, the mesophase stability decreases [2,11,12].…”
Section: Introductionmentioning
confidence: 99%
“…Central groups that provide linearity to the shape of the molecule have been found to increase the thermal stability as the polarity or polarisability increases for the central linkage component [11]. It has been shown that, in the absence of a central group that provides linearity or at the least planarity, the mesophase stability decreases [2,11,12].…”
Section: Introductionmentioning
confidence: 99%
“…The T N-I of the mesogens of t-AB type is lower than those of t-AXB and t-SB types by about 20 and 30 °C on average, respectively, for common terminal substituents. 6,7 For example, when the terminal groups are ethoxy groups, T N-I is 142, 168, and 189 °C for t-AB, t-AXB, and t-SB types, respectively. 8 Therefore, it is interesting to compare the structure of t-AB with t-AXB and t-SB to find out which part of the geometry affects the difference in T N-I .…”
Section: Introductionmentioning
confidence: 99%
“…43 Generally, the influence of halo-substitution on mesophase stability is ambiguous and probably introduction of halogen would have only minor impact on the formation of mesophases in M6, M8 and M9. 43,[56][57][58] Still the introduction of bromine into the a-position of the thiophene ring in M7 leads to the formation of a monotropic nematic phase at relatively high temperature (200 1C). Therefore the influence of a lateral halogen substituent on azobenzenes cannot be completely neglected and could become a topic of further scrutiny.…”
Section: Resultsmentioning
confidence: 99%