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Three types of ester incorporating the 1,4-disubstituted bicyclo[2.2.2]octane ring have been prepared and found to exhibit wide-range nematic phases at higher temperatures than those of analogous mesogens containing the 1,4-disubstituted phenylene or trans-1,4-disubstituted cyclohexane ring.
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Gray et al. (1979) studied this question.
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