The effect of geometrical shape and molecular rigidity on mesomorphism
作者:Priya K. Patel、R. R. Shah
DOI:10.1080/15421406.2016.1190509
日期:2016.9.21
nonlinear homologousseries RO‒C6H4‒CH˭CH‒COO‒C6H4 (meta) ‒CO‒CH˭CH‒C6H4‒OC12H25(n) (para) consisting of three phenyl rings, two central bridges ‒CH˭CH‒COO‒ and ‒CO‒CH˭CH‒ as well as ‒OR and ‒OC12H25(n) as flexible and constant terminal end groups respectively. The object in view is aimed to understand and establish the effect of molecularstructure on LC properties of nonlinear inverted “V” shaped
Study of a new homologous series of liquid crystals: Isopropyl-p-(p<sup>/</sup>-n-alkoxy cinnamoyloxy) cinnamates
作者:B. B. Jain、U. H. Jadeja、V. S. Sharma、R. B. Patel
DOI:10.1080/15421406.2015.1073567
日期:2016.1.22
homologue, and follows a zigzag path of rising and falling values as the series is ascended. Nematic–isotropictransition curve shows descending tendency as series is ascended in a normal manner with exhibition of odd-even effect. Smectic mesophase does not appear even in the monotropic condition. Phase transitiontemperatures are determined by hot stage polarizing microscope. Analytical data support
Optical compensatory sheet and process for preparation of the same and
申请人:Fuji Photo Film Co, Ltd.
公开号:US05736067A1
公开(公告)日:1998-04-07
Disclosed is an optical compensatory sheet which comprises a layer in the condition of a mono-domain of discotic nematic phase or a monoaxial columnar phase. Further, a process for preparation of the optical compensatory sheet and a liquid crystal display provided with the optical compensatory sheet are disclosed.
A novel homologous series of cinnamoyl ester comprising of elven (C1 to C16) homologues liquid crystal (LC) samples have been synthesized and characterized using instrumental methods (spectral and ...
使用仪器方法(光谱和...
Synthesis, Characterization and Mesomorphic Properties of New Rod-like Thiophene Based Liquid Crystals
作者:B. T. Thaker、B. S. Patel、Y. T. Dhimmar、D. B. Solnki、N. J. Chothani、N. B. Patel、K. B. Patel、U. Makavana
DOI:10.1080/10426507.2012.673943
日期:2012.8.22
Two new mesogenic homologous series of Schiff base esters, 2-[4-(4'-n-Alkoxy benzoyloxy) benzylidenamino] 3-cyno thiophine (Series-A) and Schiff base cinnamates, 2-[4(4'-n-alkoxy cinnamoyloxy) benzylidenamino] 3-cyano thiophene (Series-B), comprising a thiophene moiety were synthesized. Structural elucidation was carried out using elemental analysis and spectroscopic techniques such as FT-IR, H-1-NMR and C-13-NMR, and mass spectrometry. The mesomorphic properties and thermal stabilities of the title compounds were studied by using differential scanning calorimetry and optical polarizing microscopy. All the derivatives are mesomorphic in nature showing the nematic phase, and the higher members of Series-A show a smectic C phase whereas Series-B exhibits only the nematic mesophase. The mesomorphic properties of the present series are compared with other structurally related compounds.