N-substituted amino acid derivatives for use in liquid crystal materials and devices
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United States of America Patent
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Jul 17, 1990
Grant Date -
N/A
app pub date -
Jul 17, 1987
filing date -
Oct 9, 1985
priority date (Note) -
Expired
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Abstract
Novel compounds suitable for use as chiral dopants in ferroelectric smectic liquid crystal materials comprising an optically active derivative of an .alpha.-amino acid of the formula ##STR1## wherein R.sub.1 is selected from the group consisting of C.sub.1-20 alkyl or alkoxy, R is C.sub.1-20 n-alkyl and Y is C.sub.1-20 alkyl. A liquid crystal mixture and a device using these compounds are also described.
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