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Synthesis and SmC* properties of chiral liquid crystalline terephthalates

 

作者: K. FODOR-CSORBA,   E. SZABO,   A. VAJDA,   A. JAKLI,   L. BATA,  

 

期刊: Liquid Crystals  (Taylor Available online 1998)
卷期: Volume 24, issue 6  

页码: 861-869

 

ISSN:0267-8292

 

年代: 1998

 

DOI:10.1080/026782998206687

 

出版商: Taylor & Francis Group

 

数据来源: Taylor

 

摘要:

Chiral ester derivatives of terephthalic acid containing one, three, or five phenyl rings were prepared by using (S)-2-methylbutanol or (R)-2-chloropropanol as starting materials. The one-ring terephthalates did not exhibit any liquid crystalline phases, but one of them was used as a chiral dopant in ferroelectric mixtures. Elongation of the aromatic core structure to three and five phenyl rings stabilized the SmA phase, whereas a (monotropic) SmC* phase was detected in some three-ring and five-ring derivatives. In ferroelectric mixtures based on the terephthalates, spontaneous polarizations up to 340 nC cm2 were measured.

 

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