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URN etd-0712104-153036 Statistics This thesis had been viewed 2371 times. Download 940 times. Author Hung-hsiang Huang Author's Email Address No Public. Department Chemical Engineering Year 2003 Semester 2 Degree Master Type of Document Master's Thesis Language English Page Count 64 Title SYNTHESIS AND ELECTRO-OPTICAL PROPERTIES OF NEW CHIRAL LIQUID CRYSTAL DERIVED FROM (S)-2-(6-HYDROXY-2-NAPHTHYL)PROPIONIC ACID WITH METHYLENEOXY LINKING GROUP Keyword PROPIONIC CHIRAL LIQUID CHIRAL LIQUID PROPIONIC Abstract Three homologous series of chiral esters derived from (S)-2-(6-methoxy-2-naphthly)propionic acid with methyleneoxy linking group were synthesized. The correlation between the molecular structure and the ferroelectric liquid crystal (FLC) property has been investigated.Three series of chiral materials I(m=8~12), II(m=8~12), and III(m=8~12), displayed enantiotropic mesophases of the SmA* and SmC* phases. The clearing points for the three series decrease with increasing of the nonchiral terminal chain length ‘m’.
The maximum Ps values of I(m=10~12), II(m=10~12), and III(m=10~12) vary from 12.3 to 19.1nC/cm2.
Comparing the tilt angles of I(m=10), II(m=10), and III(m=10), the maximum tilt angle values were in the range of 25~30 degrees. There is a decreasing tendency of tilt angle as increasing chiral chain length.
Advisor Committee Shune-long Wu - advisor
Chin-tsou Kup - co-chair
Jiunn-yih Lee - co-chair
Liang-jye Yu - co-chair
Files Date of Defense 2004-06-09 Date of Submission 2004-07-12