- Synthesis and characterization of new liquid crystals containing a non-activated indolinobenzospiropyranyl group. Part 4*[1]
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A series of new liquid crystalline compounds, 1′,3′,3′- Trimethylspiro[2H-1-benzopyran-2,2′-indolin/-6-yl 4-(4′- alkoxyphenylazo)benzoate, SP-APAB 1a ~ 1f, has been synthesized. Their liquid crystallines were subjected to thermal analysis on a differential scanning calorimeter (DSC), to texture of phases on a polarizing microscope and to phase transition on an X-ray diffraction mid electro-optical measurement. Most of compounds examined exhibit monotropic nematic and SmA liquid crystal phases on cooling from isotropic liquid. Suprisingly, SP-APAB 1c is shown to exhibit monotropic SmC phase in addition. X-ray diffraction study of the layer spacing confirmed that there was a layer spacing in the range of two theta from 2.25 to 2.45 A on the temperature near the phase transition from, SmA to SmC.
- Keum,Shin,Lee,Shin
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p. 119/[1161]-126/[1168]
(2007/10/03)
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- Synthesis and photochemical switching of the antiferroelectric liquid crystals containing a diazenediyl group
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Photochromic antiferroelectric liquid crystals containing a diazene moiety were synthesized for the first time, and their photochemical switching behaviors were studied.
- Negishi, Makoto,Kanie, Kiyoshi,Ikeda, Tomiki,Hiyama, Tamejiro
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p. 583 - 584
(2007/10/03)
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- CIRCULAR DICHROISM ACTIVE ARTIFICIAL PHOSPHOLIPIDS FOR THE STUDY OF MOLECULAR MEMBRANE DYNAMICS FOCUSED ON LIPID-LIPID INTERACTION
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Artificial phospholipid with an azobenzene chromophore in a close proximity to the asymmetric carbon of the choline skeleton was prepared.The artificial phospholipid was miscible with the natural phospholipid and provides CD information sensitive to the membrane motion.
- Tabushi, Iwao,Nishiya, Takako
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p. 4589 - 4592
(2007/10/02)
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