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Title page for etd-0814118-093533


URN etd-0814118-093533 Statistics This thesis had been viewed 95 times. Download 0 times.
Author Yu-Chang Huang
Author's Email Address No Public.
Department Chemical Engineering
Year 2017 Semester 2
Degree Master Type of Document Master's Thesis
Language zh-TW.Big5 Chinese Page Count 55
Title The effect of hydroxyl group position of rodlike Schiff base mesogen on the formation of blue phase
Keyword
  • linking group
  • liquid crystal
  • blue phase
  • Schiff base
  • hydroxyl group
  • hydroxyl group
  • Schiff base
  • blue phase
  • liquid crystal
  • linking group
  • Abstract Two kinds of intramolecular hydrogen bonding by hydroxyl group with Schiff base or ester group were successfully incorporated into two types of rod-like Schiff base mesogens with -C=N- or -N=C- linkage. These Schiff base are doped with chiral additives S811 and ISO(6OBA)2 to investigate the effect of hydroxyl group position of rodlike Schiff base mesogen on the formation of blue phase (BP). The results show that the presence of intramolecular hydrogen bonding by hydroxyl group with Schiff base or ester group in Schiff base mesogen of series I (-C=N-) reduced BP formation temperature and narrow BP range when Schiff base mesogen is doped with chiral additives S811 or ISO(6OBA)2. For series III(-N=C-), BP could not be induced in the presence of only intramolecular hydrogen bonding between hydroxyl group and Schiff base in the mesogen of series III when chiral dopant S811 is added. Notably, BP emerges when two types of intramolecular hydrogen bonding by hydroxyl group with Schiff base and ester group both exist in Schiff base mesogen of in series III.
    Advisor Committee
  • Chiung-Cheng Huang - advisor
  • I-Jui Hsu - co-chair
  • Mei-Ching Yu - co-chair
  • Files indicate accessible at a year
    Date of Defense 2018-07-23 Date of Submission 2018-08-14


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