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Crystallization and Matrix Effects on the Electronic Properties of Polymers Doped with CT Salts of TCNQ

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Abstract

Molecularly doped polymer films have shown potential for applications in electrophotography and molecular electronics. The electrooptical and magnetic properties as well as conductivities are enhanced significantly by doping chargetransfer(CT) complexes or dye into a polymeric matrix, by comparison with nondoped polymer films.

Polycarbonate films doped with CT complexes based on 7,7′,8,8′- tetracyanoquinodimethane(TCNQ) were studied from 100K to 450K. Crystallization and formation of ‘nearly ‘spaced aggregates within the polymer matrix were observed. These phenomena were affected by several factors such as the film thickness, evaporation process, temperature and concentration within the polymer matrix. Discontinuities in magnetic properties at 200K, possibly due to solvent encapsulation in the matrix, and at about 385K due to glass transition of the polymer were observed. p]Characterization, conductivity measurements in comparison with pristine complexes, and photoirradiation studies on these doped films are presented.

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Acknowledgement

YCF would like to thank the support of Swern fellowship for summer, 1990. The authors thank DR. M.M. Labes for providing the facilities for conductivity measurements and ICI for GPC and DSC measurements.

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Authors and Affiliations

  1. Department of Chemistry and Materials Science, Temple University, Phila., PA.

    Yang-Cheng Fann & Susan A. Jansen

  2. ICI Advanced Materials, Exton, PA.

    Marygail Hutchins

Authors
  1. Yang-Cheng Fann
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  2. Susan A. Jansen
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  3. Marygail Hutchins
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Fann, YC., Jansen, S.A. & Hutchins, M. Crystallization and Matrix Effects on the Electronic Properties of Polymers Doped with CT Salts of TCNQ. MRS Online Proceedings Library 214, 107–112 (1990). https://doi.org/10.1557/PROC-214-107

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  • DOI: https://doi.org/10.1557/PROC-214-107

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