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High Temperature Electrical Conductivity Of Solution-Cast Bbl Flims.

Published online by Cambridge University Press:  16 February 2011

Ashwini K. Agrawal ,
Chyi-Shan Wang  and
Hyun H. Song
Ashwini K. Agrawal
Affiliation:
Systran Corporation, 4126 Linden avenue, Dayton, OH 45432
Chyi-Shan Wang
Affiliation:
University of Dayton Research Institute, 300 College Park Drive, Dayton, OH 45469
Hyun H. Song
Affiliation:
University of Dayton Research Institute, 300 College Park Drive, Dayton, OH 45469
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Abstract

Thin films (18 μ thickness) of ladder polymer poly[(7-oxo-7H,10H-benz (d,e) imidazo (4′,5′:5,6) -benzimidazo (2,l-a) isoquinoline-3,4:10,ll-tetrayl)-10-carbonyl} (BBL), which were cast from an isotropie methanesulfonic acid solution of BBL, were characterized for electrical conductivity in the temperature range of 25–480 °C. The electrical conductivity was Measured in situ while the films were heated at a rate of 2 °C/Minute under vacuum. The in-plane conductivity of BBL films increased rapidly from below 10−10 S/cm at the room temperature to 5 × 10-3 S/cm at 280 °C and then increased slowly to a peak value of 5 × 10-2 S/cm at about 460 °C. The out-of-plane conductivity of the films was comparable to their in plane conductivity at temperatures below 270 °C, however, was lower by a factor of 10 than in-plane conductivity at temperatures above 270 °C. This anisotropy in conductivity of BBL films is discussed with respect to the film morphology determined by wide angle x-ray scattering studies.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 328: Symposium Q – Electrical, Optical, and Magnetic Properties of Organic Solid State Materials , 1993 , 279
Copyright
Copyright © Materials Research Society 1994

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References

REFERENCES

1. (a) Jenekhe, S. A., Johnson, P. O., Agrawal, A. K., Polym. Mater. Sci. Eng. (ACS Div. Proc.) 60, 404–409 (1989).Google Scholar
(b) Jenekhe, S. A., Johnson, P. O., Macromolecules 23, 4419–4429 (1990) and references thereinGoogle Scholar
(c) Berry, G. C., J. Polym. Sci.: Polym. Symp. 65, 143 (1978).Google Scholar
2. Wang, C. S., TRIP l, 199–205 (1993).Google Scholar
3. (a) Antoniadis, H., Abkowitz, M. A., Osaheni, J. A., Jenekhe, S. A., Stolka, M., Synthetic Metals 60, 149–157 (1993).CrossRefGoogle Scholar
(b) Narayan, K. S., Taylor, B. E., Spry, R. S., Ferguson, J. B., The International Conference on Luminescence, August 9–13, 1993, pp M4–50.Google Scholar
4. (a) Jenekhe, S. A., Roberts, M. F., Agrawal, A. K., Meth, J. S., Vanherzeele, H. in Optical and Electrical properties of Polymers, eds. EMerson, J. A. & Torkelson, J. M. (Mater. Res. Soc. Proc. 214, Pittsburgh, PA, 1991) pp.55–59 Google Scholar
(b) Meth, J. S., Vanherzeele, H., Jenekhe, S. A., Roberts, M. F., Agrawal, A. K., Yang, C. J., SPIE Proc. 1560, 13–24 (1991).CrossRefGoogle Scholar
5. Belaish, I., Rettori, C., Davidov, D., McLean, M. R., Dalton, L., Nalwa, H. in The Materials Science and Engineering of Rigid-Rod Polymers, edited by Adams, W. W., Eby, R. K., and McLemore, D. E. (Mater. Res. Soc. Proc. 134, Pittsburgh, PA 1989) pp. 689–695.Google Scholar
6. Coter, F., Belaish, Y., Davidov, D., Dalton, L. R., Ehrenfreund, E., McLean, M. R., Nalwa, H. S., Synth. Met. 29, E471–E476 (1989).CrossRefGoogle Scholar
7. Wang, C. S., Lee, C. Y.-C., Arnold, F. E. in Electrical. Optical, and Magnetic Properties of Organic Solid State Materials, edited by Chiang, L. Y., Garito, A. F., Sandman, D. J. (Mater. Res. Soc. Proc. 247. Pittsburgh, PA, 1992) pp.747–752 Google Scholar
8. Song, H. H. and wang, C. S., Polymer Communications, in press.Google Scholar
9. Agrawal, A. K., Wang, C.S., Song, H. H., Manuscript in preparation.Google Scholar