Hostname: page-component-586b7cd67f-g8jcs Total loading time: 0 Render date: 2024-11-25T17:45:49.309Z Has data issue: false hasContentIssue false
  • English
  • Français

Birefringence and Order of Liquid Crystal Polymer Solutions

Published online by Cambridge University Press:  22 February 2011

Hedi Mattoussi ,
Moran Srinivasarao ,
Philip G. Kaatz  and
Guy C. Berry
Hedi Mattoussi
Affiliation:
Carnegie Mellon University, Department of Chemistry, 4400 Fifth Avenue, Pittsburgh, PA 15213
Moran Srinivasarao
Affiliation:
Carnegie Mellon University, Department of Chemistry, 4400 Fifth Avenue, Pittsburgh, PA 15213
Philip G. Kaatz
Affiliation:
Carnegie Mellon University, Department of Chemistry, 4400 Fifth Avenue, Pittsburgh, PA 15213
Guy C. Berry
Affiliation:
Carnegie Mellon University, Department of Chemistry, 4400 Fifth Avenue, Pittsburgh, PA 15213
Get access

Abstract

Birefringence measurements of nematic solutions of the poly(p-phenylene benzobisthiazole), PBT, using interference between the ordinary and extraordinary waves created when a plane polarized wave enters the crystal, are described. The measured birefringence is high, e.g., ne – no varies from 0.05 to 0.09 at 633 nm for polymer concentrations 4×10−2 < c < 10×10−2(g/cm3). These data are discussed with the implications they have on the order parameter in these solutions.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 214: Symposium R1 – Optical and Electrical Properties of Polymers , 1990 , 157
Copyright
Copyright © Materials Research Society 1991

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1. See for instance: Gennes, P. G. de, The Physics of Liquid Crystals, (Clarendon Press, Oxford, U.K., 1974); W. W. De Jeu, Physical Properties of Liquid Crystalline Materials, (Gorden and Breach Science Publishers, New York, 1980).Google Scholar
2. Mattoussi, H., Srinivasarao, M., Kaatz, P. G., Berry, G. C., submitted for Publication (1990).Google Scholar
3. Tsai, H-H., Ph.D. Dissertation, Carnegie Mellon University, Pittsburgh (1983)Google Scholar
4. Cotts, P. Metzger, Berry, G. C., J. Polym. Sci. Polym. Phys. Ed., 21, 1255 (1983), and Ref. therein.Google Scholar
5. Born, M., Wolfe, E., Principles of Optics, sixth Edition (Pergamon Press, Oxford, U.K., 1980).Google Scholar
6. McCrone, W. H., McCrone, L. B., Delly, J. G., Polarized Light Microscopy, (McCrone Research Institute, Chicago, 1987).Google Scholar
7. Wolfe, W. L., in Handbook of Optics, (Optical Society of America, Ed. by Driscoll, W. G., and Vaugham, W., MacGraw Hill, 1978), Section 7.Google Scholar
8. Chandrasekhar, S., Madhusudara, N. V., J. Phys. Coll. C4. (Les Ulis), 30, 24 (1969).Google Scholar
9. Brunet-Germain, M., Comp. Rend. Aca. Sci., Paris, B271, 1075 (1970); Mol. Cryst. Liq. Cryst., 11, 289 (1970); and Ref. therein.Google Scholar
10. Hanson, E. G., Shen, Y. R., Mol. Cryst. Liq. Cryst., 36, 193 (1976).CrossRefGoogle Scholar
11. Vuks, M. F., Opt. Spec., 20, 361 (1964).Google Scholar
12. Tvetkov, V. N., Eskin, V. E., Frenkel, S. Y., Structure of Macromolecules in Solutions, (English Translation, National Lending Library for Science and Technology, Boston, 1971), V1.Google Scholar