Dibenzothiophene oxide compound, and process for producing...

Details Dibenzothiophene oxide compound, and process for producing... Dibenzothiophene oxide compound, and process for producing...

2006-11-14

2006-11-14

Shameem, Golam M. M. (Department: 1626)

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C549S029000, C549S041000, C549S043000

Reexamination Certificate

active

07135579

ABSTRACT:
There are disclosed novel compounds, liquid crystal compositions, polymers, optically anisotropic producgs, and optical or liquid crystal elements that have large refractive index anisotropy, mix easily with other liquid crystals, have advantageous stability against light, and exhibit absorption at practically short wavelength in the ultraviolet region. The compounds are represented by the formula (1) and have a phenylacetylene structure, wherein difference ΔE in energy of HOMO of parts (1-1), (1-2) and (1-3) calculated by the method of molecular orbitals is not less than 0.3 electronvolt, and the polarizability anisotropy Δα of a molecule represented by the formula (1) calculated in the same way is not lower than 500 A.U.:in-line-formulae description="In-line Formulae" end="lead"?P1—H  (1-2)in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?P2—H  (1-3)in-line-formulae description="In-line Formulae" end="tail"?(A1to A4: H, F, alkyl or alkoxy group of C1 to C10 optionally substituted with F; P1, P2: structure fulfilling the conditions of HOMO energy and polarizability).

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