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Nonthermochromic Forms of the Polydiacetylene ETCD

Published online by Cambridge University Press:  16 February 2011

Daniel J. Sandman
Affiliation:
Center For Advanced Materials, Department Of Chemistry, University of Massachusetts Lowell, Lowell, Massachusetts 01854
Milton J. Downey
Affiliation:
Center For Advanced Materials, Department Of Chemistry, University of Massachusetts Lowell, Lowell, Massachusetts 01854
Sandra H.W. Hankin
Affiliation:
GTE Laboratories Incorporated, 40 Sylvan Road, Waltham, Massachusetts 02254
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Abstract

Subjecting crystals of the thermochromic polydiacetylene (PDA) from the bis (ethyl ure thane) of 5,7-dodecadiyne-1, 12-diol (ETCD) to the solvents chlorobenzene and ?,?-dimethylformamide above the thermochromic transition temperature of PDA-ETCD irreversibly converts the material to nonthermochromic forms. These new forms have been characterized by their structural, thermal, and spectral properties. The materials isolated after exposure to chlorobenzene are highly crystalline with a structure that has expanded and disordered, yet is still related to that of the pristine polymer. The observed properties are discussed in the framework of the crystal structure-thermochromism relationship for urethane-substituted PDA.

Type
Research Article
Copyright
Copyright © Materials Research Society 1994

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References

REFERENCES

1. Schott, M. and Wegner, G., in Nonlinear Optical Properties of Organic Molecules and Crystals, edited by Chemia, D.S. and Zyss, J. (Academic Press, Orlando, 1987), vol. 2, pp. 349.Google Scholar
2. Morrow, M.E., White, K.M., Eckhardt, C.J., and Sandman, D.J., Chem. Phys. Lett., 140, 263 (1987).CrossRefGoogle Scholar
3. Koshihara, S., Tokura, Y., Takeda, K., Koda, T., and Kobayashi, A., J. Chem. Phys., 92, 7581 (1990).CrossRefGoogle Scholar
4. Koshihara, S., Tokura, Y., Takeda, K., and Koda, T., Phys. Rev. Lett., 68, 1148 (1992).Google Scholar
5. Hood, R.J., Muller, H., Eckhardt, C.J., Chance, R.R., and Yee, K.C., Chem. Phys. Lett., 54, 295 (1978).CrossRefGoogle Scholar
6. Batchelder, D.N., in Polydiacetylenes, edited by Bloor, D. and Chance, R.R. (Martinus Nijhoff, Dordrecht, Boston, 1985), pp. 187212.Google Scholar
7. Sandman, D.J. and Chen, Y.J., Polymer, 30, 1027 (1989).Google Scholar
8. Sandman, D.J., in Electrical, Optical, and Magnetic Properties of Organic Solid State Materials, edited by Chiang, L.Y., Garito, A.F., and Sandman, D.J. (Mater. Res. Soc. Proc. 247, Pittsburgh, PA. 1992) pp. 631635.Google Scholar
9. Sandman, D.J., Mol. Cryst. Liq. Cryst., 189, 273 (1990).Google Scholar
10. Hankin, S.H.W., Downey, M.J., and Sandman, D.J., Polymer, 33, 5098 (1992).Google Scholar
11. Chance, R.R., Macromolecules, 13, 396 (1980).CrossRefGoogle Scholar
12. Eckhardt, H., Boudreaux, D.S., Chance, R.R., J. Chem. Phys., 85, 4116 (1986).Google Scholar
13. Sandman, D.J., Downey, M.J., and Hankin, S.H.W., Makromol. Chem., 194, xxxx (1993).CrossRefGoogle Scholar
14. Sandstedt, C., Eckhardt, C.J., Downey, M.J., and Sandman, D.J., unpublished experiments.Google Scholar
15. Chance, R.R., Baughman, R.H., Müller, H., and Eckhardt, C.J., J. Chem. Phys., 67, 3616 (1977).Google Scholar
16. Sandman, D.J., Samuelson, L.A., and Velazquez, C.S., Polym. Commun., 27, 242 (1986).Google Scholar
17. Hankin, S.H.W. and Sandman, D.J., in Structure-Property Relations in Polymers, Urban, M.W. and Craver, C.D., eds. (American Chemical Society Advances in Chemistry Series, 1993), vol. 236, pp. 243262.Google Scholar
18. Downey, M.J., Hamill, G.P., Rubner, M., Sandman, D.J., and Velazquez, C.S., Makromol. Chem., 189, 1199 (1988).CrossRefGoogle Scholar
19. Sandman, D.J. and Chen, Y.J., Synthetic Metals, 28, D613 (1989).Google Scholar
20. Batchelder, D.N. and Bloor, D., in Advances in Infrared and Raman Spectroscopy, Clark, R.J.H. and Hester, R.E., eds. (Wiley-Heydon, Chichester, 1983), vol. 11, pp. 133209.Google Scholar
21. Sandman, D.J. and Chen, Y.J., Polymer, 30, 1027 (1989).Google Scholar
22. Bloor, D., Rughooputh, S.D.D.V., Phillips, D., Hayes, W., Wong, S.K., in Electronic Properties of Polymers and Related Materials. Kuzmany, H., Mehring, M., and Roth, S., eds. (Springer Verlag, Berlin, 1985), pp. 253255.Google Scholar
23. Kobayashi, T., Synthetic Metals, 54, 75 (1993).Google Scholar
24. Baughman, R.H. and Chance, R.R., J. Appl. Phys., 47, 4295 (1976).CrossRefGoogle Scholar