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Cyclic Liquid Crystalline Siloxanes - Chemistry and Applications

Published online by Cambridge University Press:  10 February 2011

F.-H. Kreuzer ,
R. Maurer  and
J. Stohrer
F.-H. Kreuzer
Affiliation:
Consortium fur elektrochemische Industrie GmbH, Central Research Company of Wacker-Chemie GmbH, Zielstattstr.20, D-81379 Mutnchen, Germany
R. Maurer
Affiliation:
Consortium fur elektrochemische Industrie GmbH, Central Research Company of Wacker-Chemie GmbH, Zielstattstr.20, D-81379 Mutnchen, Germany
J. Stohrer
Affiliation:
Consortium fur elektrochemische Industrie GmbH, Central Research Company of Wacker-Chemie GmbH, Zielstattstr.20, D-81379 Mutnchen, Germany
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Abstract

Cyclic Siloxanes, bearing mesogenic groups, connected with the backbone via aliphatic spacers exhibit phases analogue to the classic calamitics. Bearing two different mesogenic groups, these materials can be considered as cooligomers, whose degree of polymerization is given by the H-siloxanes used. These cooligomers consist of a mixture of molecules with substitution patterns determined by the statistics of the addition reaction of the mesogenic groups to the H-siloxane. Two types of materials are available, crosslinkable and non crosslinkable. As most important applications may be mentioned: Cholesteric reflectors and filters, storage materials for optical informations, retardation plates and pigments for iridescent or polarizing coatings.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 425: Symposium I – Liquid Crystals for Advanced Technologies , 1996 , 3
Copyright
Copyright © Materials Research Society 1996

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References

1. De Vries, H. I., Acta Cryst., 4, p. 219 (1951).Google Scholar
2. Kelker, H., Hatz, R., Handbook of Liquid Crystals, (Verlag Chemie, Weinheim 1980), Chap. 7.Google Scholar
3. Finkelmann, H., Rehage, G., Makromol.Chem., Rapid Commun. 1, p. 31 (1980).Google Scholar
4. Krucke, B., Schlossarek, M., Zaschke, H., Acta Polymerica, 39, p. 607 (1988).Google Scholar
5. Kreuzer, F.-H., Gawhary, M., Winkler, R., Finkelmann, H., EP 0 060 335 (1981).Google Scholar
6. Richards, R. D. C., Hawthorne, W. D., Hill, J. S., White, M. S., Lacey, D., Semlyen, J. A., Gray, G. W., Kendrick, T. C., J. Chem. Soc., Chem. Commun., pp. 95–97 (1990).Google Scholar
7. Kreuzer, F.-H., Maurer, R., P. Spes., Makromol. Chem. Makromol. Symp., 50, pp. 215–228 (1991).Google Scholar
8. Kreuzer, F.-H., Andrejewski, D., Haas, W., Haberle, N., Riepl, G., Spes, P., Mol. Cryst. Liq. Cryst., 199, pp. 345–378 (1991).Google Scholar
9. Andrejewski, D., Gawhary, M., Winkler, H.-J.Luckas, R.., Kreuzer, F.-H., EP O 358 208 (1989).Google Scholar
10. Finkelmann, H., Rehage, G., Kreuzer, F.-H., EP 0 066 137 (1985).Google Scholar
11. Ryan, J. W., Menzie, G. K., Speier, J. L., Amer. Chem. Soc., 82, 3601 (1960)Google Scholar
12. Bunning, T. J., Klei, H. E., Samulski, E. T., Crane, R. L., Linville, R. J., Liq. Cryst. 10, 445–456 (1991).Google Scholar
13. Weitzel, H.-P., Kreuzer, F.-H., Maurer, R., GP 4234845.5 (1992)Google Scholar
14. Maurer, R, Andrejewski, D., Kreuzer, F.-H., Miller, A., SID Int. Symp. Dig. Tech. Papers 21, 110–113 (1990).Google Scholar
15. Häberle, N., Leigeber, H., Maurer, R., Miller, A., Stohrer, J., Buchecker, R., Fünfschilling, J., Schadt, M. SID Int. Display Res. Conf. San Diego 57–59 (1991).Google Scholar
16. Eich, M., Wendorff, J.-H., Reck, B., Ringsdorff, H., Makromol. Chem., Rap. Commun., 8, p. 59 (1987).Google Scholar
17. Petri, A., Brauchle, Ch., Leigeber, H., Miller, A., Weitzel, H.-P., F.-H. Kreuzer. Liq. Cryst. 15, 113–121 (1993).Google Scholar
18. Bunning, T. J., Kreuzer, F.-H., TIP 3, pp. 318–323 (1995)Google Scholar
19. Korenic, E. M., Jacobs, S. D., Houghton, J. K., Schmid, A., Kreuzer, F.-H., Appl. Opt., 33, pp. 1889–1899 (1994).Google Scholar
20. Meyer, R. B., Appl. Phys. Lett., 14, pp. 208–209 (1969).Google Scholar
21. Dreher, R., Solid State Commun., 12, pp. 519–522 (1973).Google Scholar
22. Mazkedian, S., Melone, S., Rustichelli, F., Le J. de Physique, 37, pp. 731–736 (1976).Google Scholar
23. Hajdo, L. H., Eringen, A. C., J. Opt. Soc. Am. 69, pp. 1017–1023 (1979).Google Scholar
24. Broer, D. J., Lub, J., EPA 606 940 A3 (1994).Google Scholar
25. Makow, D., Color Res. Appl., 11, pp 205–208 (1986).Google Scholar
26. Faris, S., USP 5,354,557 (1994).Google Scholar
27. Müller-Rees, Ch. Stohrer, J., Kreuzer, F.-H., Jung, S., Csellich, F., EPA 601 483 Al (1992).Google Scholar
28. Korenic, E. M., Jacobs, S. D., Faris, S. M., Li, L., Proc. of the IS&T/SID 1995 Col. Im.Conf: Col. Sci., Sys. and Appl., pp. 60–62.Google Scholar
29. Eberle, H.-J., Miller, A., Kreuzer, F.-H., Liq. Cryst. 5, pp. 907–916 (1989)Google Scholar