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Optical Spectroscopic Studies of a Soluble Fluorene-Based Conjugated Polymer: A Hydrostatic Pressure and Temperature Study

MRS Online Proceedings Library volume 708, Article number: 107 (2001) Cite this article

Abstract

Spectroscopic properties of conjugated molecules/polymers have varying degrees of sensitivity to backbone conformation. Optical studies are presented as a function of temperature and hydrostatic pressure, using photoluminescence and Raman scattering from two polymers with distinct differences in their backbone conformation, namely, polyfluorene (PF) and ladder type poly(para-phenylene)(m-LPPP). In contrast to the photoluminescence (PL) vibronics in mLPPP, the 0-0 PL vibronic peak in PF shows a red-shift with increasing temperatures. Pressure studies reveal that the PL spectrum of PF red-shifts and broadens with increasing pressures. The phonon lines in PF show an antiresonance effect at higher pressures indicating a strong electron-phonon interaction.

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Authors and Affiliations

  1. Dept. of Physics, Astronomy and Materials Science, Southwest Missouri State University, Springfield, MO, 65804, USA

    S. Guha & J. D. Rice

  2. Dept. of Physics and Astronomy, University of Missouri, Columbia, MO, 65211, USA

    C. M. Martin, M. Chandrasekhar & H. R. Chandrasekhar

  3. Dept of Physics and Astronomy, Virginia Tech, Blacksburg, VA, 24061, USA

    W. Graupner

  4. Universitaet Potsdam, Germany

    U. Scherf

  5. Austriamicrosystems, AG; Schloss Premstaetten, A 8141, Austria

    W. Graupner

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  1. S. Guha
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  2. J. D. Rice
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  3. C. M. Martin
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  4. W. Graupner
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  5. M. Chandrasekhar
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  6. H. R. Chandrasekhar
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  7. U. Scherf
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Guha, S., Rice, J.D., Martin, C.M. et al. Optical Spectroscopic Studies of a Soluble Fluorene-Based Conjugated Polymer: A Hydrostatic Pressure and Temperature Study. MRS Online Proceedings Library 708, 107 (2001). https://doi.org/10.1557/PROC-708-BB10.7

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  • DOI: https://doi.org/10.1557/PROC-708-BB10.7