Antiferroelectric Liquid Crystal from Bent-Core Molecule with Vinyl End Group
| العنوان: | Antiferroelectric Liquid Crystal from Bent-Core Molecule with Vinyl End Group |
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| المؤلفون: | Dae-Choel Kim, E-Joon Choi, Hong Choi, Liang-Chy Chien, Wang-Cheol Zin, Soon-Sik Kwon, Tae-Sung Kim, Sea-Yun Kim, Chong-Kwang Lee, Sung-Tae Shin |
| المصدر: | ChemInform. 36 |
| بيانات النشر: | Wiley, 2005. |
| سنة النشر: | 2005 |
| مصطلحات موضوعية: | Materials science, Substituent, General Chemistry, General Medicine, Crystallography, End-group, chemistry.chemical_compound, Differential scanning calorimetry, chemistry, Liquid crystal, Phase (matter), Antiferroelectricity, Moiety, Molecule |
| الوصف: | Three banana-shaped achiral compounds, 4-chloro-1,3-phenylene bis [4-{4-(undecenyloxy)phenyl iminomethyl}benzoate] derivatives, were synthesized with variation of a substituent (x=H, F, Cl); their antiferroelectric properties are described. The smectic mesophases, including a switchable chiral smectic C(Sm C*) phase, were characterized by differential scanning calorimetry, polarizing optical microscopy, triangular wave method, and X-ray diffractometry. The presence of vinyl groups at the terminals of linear side wings in the banana-shaped achiral molecules induced a decrease in melting temperature and formation of the switchable Sm C* phase in the melt. The smectic phase having a lateral fluorine-substituent at 3-position of the Schiffs base moiety showed antiferroelctric switching, and the value of spontaneous polarization on reversal of an applied electric field was 250 nC/cm 2 . |
| تدمد: | 1522-2667 0931-7597 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::81e1aa031d547320320abf420a5907a7Test https://doi.org/10.1002/chin.200501203Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....81e1aa031d547320320abf420a5907a7 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 15222667 09317597 |
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