Zobrazeno 1 - 10
of 27
pro vyhledávání: '"Jirakorn Thisayukta"'
Autor:
Jirakorn Thisayukta, Michi Nakata, Hiroko Niwano, Hideo Takezoe, Darren R. Link, Junji Watanabe
Publikováno v:
The Journal of Physical Chemistry B. 108:14889-14896
The correlation between chirality of the B2 and B4 phases was examined by measuring the circular dichroism (CD) in the classic bent-core molecule, P-12-O-PIMB, which shows a direct B2 to B4 phase transition on cooling. Among the various structures fo
Autor:
Hideo Takezoe, Takayuki Doi, Sungmin Kang, Takashi Takahashi, Junji Watanabe, Jirakorn Thisayukta, Ogino Kumiko
Publikováno v:
Liquid Crystals. 31(No. 10):1323-1336
Novel derivative series of the well known bent-shaped P-n-O-PIMB liquid crystal mesogens, referred to as ‘4Br-P-n-O-PIMB’, ‘4Cl-P-n-O-PIMB’ and ‘5Cl-P-n-O-PIMB’, having halogen atoms substituted on the phenyl ring in the central core, wer
Autor:
Mitsuyo Hirose, Hideo Takezoe, Junji Watanabe, Sungmin Kang, Maki Yamada, Hiromichi Kurosu, Mami Kawasaki, Masato Sone, Jirakorn Thisayukta
Publikováno v:
J. Phys. Chem. A. 108:4674-4678
Solid-state 13C NMR measurements were made for the B2 and B4 phases of the achiral banana-shaped molecule, P-14-O-PIMB, which exhibits a direct transformation from the B2 phase to the B4 phase. In both phases, an NMR resonance signal assigned to carb
Publikováno v:
Journal of Materials Chemistry. 11:2717-2721
The chiral helical structures of the Sm1 phase of naphthalene-2,7-diyl bis[4-(4-alkoxyphenyliminomethyl)benzoates] (N-n-O-PIMB) occur with equal probability for right- and left-handed structures. In this report, we investigated the effect of chiral d
Autor:
Yoichi Takanishi, Fumito Araoka, Ken Ishikawa, Junji Watanabe, Michi Nakata, Jirakorn Thisayukta, Hideo Takezoe, Darren R. Link
Publikováno v:
Liquid Crystals. 28:1301-1308
A fluid smectic phase of a chiral bent-core liquid crystal was found to have a ground state structure that is anticlinic in tilt and ferroelectric in polar order, SmCAPF*. The layer chirality of this structure alternates from layer to layer despite t
Autor:
Junji Watanabe, Jirakorn Thisayukta, Michi Nakata, Ken Ishikawa, Darren R. Link, Hideo Takezoe, Yoichi Takanishi
Publikováno v:
Journal of Materials Chemistry. 11:2694-2699
In order to investigate polar order and chiral layer structures in bent-core mesogens, mixtures of synclinic antiferroelectric (achiral P-8-OPIMB) and anticlinic ferroelectric (chiral P-8-OPIMB6*) liquid crystals were studied. The binary phase diagra
Autor:
Ken Ishikawa, Darren R. Link, Yoichi Takanishi, Jirakorn Thisayukta, Damian Pociecha, Fumito Araoka, Junji Watanabe, Michi Nakata, Hideo Takezoe, Ewa Gorecka
Publikováno v:
Physical Review E. 62:R4524-R4527
We report unambiguous evidence for ferroelectricity in a chiral bent-core liquid crystal. This evidence includes (i) a single current peak in the polarization reversal current, (ii) a strong dielectric response that is suppressed by applying a bias e
Publikováno v:
Liquid Crystals. 27:1129-1135
Banana-shaped molecules having two side wings attached to a bent core may exhibit liquid crystallinity. The most studied material is 8-OPIMB that comprises 1,3-dihydroxybenzene as a central core, a Schiff 's base moieties as the wing groups and octyl
Publikováno v:
Journal of the American Chemical Society. 122:7441-7448
We have prepared a novel series of banana-shaped molecules with a central bent core based on a 2,7-dihydroxynaphthalene group, the side wings containing a Schiff's based moiety, and alkoxy flexible tails with carbon numbers n = 6, 8, 10, 12, 14, and
Publikováno v:
Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals. 346:63-75
We have synthesized a new banana-shaped compound, having naphthalene as a center of molecule. This compound exhibited an unconventional smectic texture by optical microscopy where the growth of small-fractal domains was observed. Moreover, two differ