Photochemically active chiral compounds and compositions...

Details Photochemically active chiral compounds and compositions... Photochemically active chiral compounds and compositions...

2004-10-29

2008-12-30

Wu, Shean C (Department: 1795)

Compositions

Liquid crystal compositions

C549S334000, C549S344000, C560S080000, C560S256000, C252S299200

Reexamination Certificate

active

07470376

ABSTRACT:
The present invention relates to a phototunable chiral dopant represented by the following structure:wherein:A, B, C and D are independent divalent groups; X and Z are any independently selected substituent; n is an integer and independently varies from 0 to 3; q is an integer and independently varies from 0 to 5; RNG1 and RNG2 independently represent any ring group; m represents an integer independently varying from 0 to 4; p represents an integer independently varying from 1 to 4; Q independently represents a carbon C—RC, or nitrogen, wherein RCis independently hydrogen or any substituent. The invention also relates to the use of the dopant in a liquid crystalline composition and a display containing the same, as well as a material composition comprising an enantiomeric excess of one enantiomer of the compound.

REFERENCES:
patent: 5668614 (1997-09-01), Chien et al.
patent: 6217792 (2001-04-01), Parri et al.
patent: 6589445 (2003-07-01), Sugiyama et al.
patent: 6645397 (2003-11-01), Ichihashi
patent: 7052743 (2006-05-01), Welter et al.
patent: 7119859 (2006-10-01), Chari et al.
patent: 7150900 (2006-12-01), Welter
patent: 7214834 (2007-05-01), Welter
patent: 7329368 (2008-02-01), Welter
patent: 2003/0111639 (2003-06-01), Yumoto et al.
patent: 2003/0122105 (2003-07-01), Ichihashi
patent: 2003/0137632 (2003-07-01), Kawabata
patent: 2004/0019228 (2004-01-01), Yumoto et al.
patent: 2002 179681 (2002-06-01), None
patent: 2003 306491 (2003-10-01), None
patent: 2005-281215 (2005-10-01), None
Birman et al., “1,1—-Spirobiindane-7,7—-diol: a novel, C2-symmetric chiral ligand”, Tetrahedron: Asymmetry 10 (1999) 125-131.
Giovanni Gottarelli and Gian P. Spada, “Induced Cholesteric Mesophases: Origin and Application,” Mol. Cryst. Liq. Cryst., 1985, vol. 123, pp. 377-388.
Gian Piero Spada and Gloria Proni, “The Nematic Liquid Crystal Phase as a Probe of the Molecular Shape Helicity,” Enautiomer, vol. 3, pp. 301-314.
Zvonimir Dogic and Seth Fraden, “Cholesteric Phase in Virus Suspensions,” Langmuir 2000, 16, pp. 7820-7824.
C. Mioskowski, J. Bourguignon, and S. Candau, Chem. Phys. Letters, vol. 38, pp. 456-459 (1976).
Peter Van de Witte, Juan Galan, and John Lub, Liquid Crystals, vol. 24, pp. 819-827 (1998).
Richard A. van Delden, Marc B. van Gelder, Nina P.M. Huck, and Ben L. Feringa, Advanced Functional Materials, vol. 13, pp. 319-324 (2003).
Sandi Campbell, Yuhui Lin, Uwe Müller, and L-C. Chien, Chem. Mater., vol. 10, pp. 1652-1656 (1998).
Giovanni Gottarelli and Gian P. Spada, “Induced Cholesteric Mesophases: Origin and Application,” Mol. Cryst. Liq. Cryst., 1985, vol. 123, pp. 377-388.
Gian Piero Spada and Gloria Proni, “The Nematic Liquid Crystal Phase as a Probe of the Molecular Shape Helicity,” Enautiomer, vol. 3, pp. 301-314, 1998.
Zvonimir Dogic and Seth Fraden, “Cholesteric Phase in Virus Suspensions,” Langmuir 2000, 16, pp. 7820-7824
C. Mioskowski, J. Bourguignon, and S. Candau, Chem. Phys. Letters, vol. 38, pp. 456-459 (1976).
Peter Van de Witte, Juan Galan, and John Lub, Liquid Crystals, vol. 24, pp. 819-827 (1998).
Richard A. van Delden, Marc B. van Gelder, Nina P.M. Huck, and Ben L. Feringa, Advanced Functional Materials, vol. 13, pp. 319-324 (2003).
Sandi Campbell, Yuhui Lin, Uwe Müller, and L-C. Chien, Chem. Mater., vol. 10, pp. 1652-1656 (1998).

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