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Enhanced Second Order Nonlinear Optical Susceptibilities in Ionically Self-Assembled Films Incorporating Dianionic Molecules

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Abstract

Ionically self-assembled monolayer (ISAM) films have been recently shown to spontaneously produce noncentrosymmetric ordering that gives rise to a substantial second order nonlinear optical (NLO) response. Typically, the ISAM films for NLO response are an assemblage of bilayers of oppositely charged polymers whose thickness can be controlled through variation of pH and ionic strength of the immersion solutions. Here, we study the effects of replacing the NLO-active polymer layers with layers of dianionic molecules. Films fabricated exclusively using polyelectrolytes contain some fraction of both randomly oriented and anti-parallel oriented chromophores. The incorporation of dianionic molecules within the ISAM films affords greater χ(2) due to increased net polar orientation of the chromophores.

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Authors and Affiliations

  1. Department of Materials Science and Engineering, Virginia Tech, Blacksburg, VA, 24061, USA

    P. J. Neyman & J. R. Heflin

  2. Department of Chemical Engineering, Virginia Tech, Blacksburg, VA, 24061, USA

    M. T. Guzy, S. Shah, K. E. Van Cott & R. M. Davis

  3. Department of Chemistry, Virginia Tech, Blacksburg, VA, 24061, USA

    H. Wang & H. W. Gibson

  4. Department of Physics, Virginia Tech, Blacksburg, VA, 24061, USA

    C. Brands & J. R. Heflin

Authors
  1. P. J. Neyman
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  2. M. T. Guzy
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  3. S. Shah
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  4. K. E. Van Cott
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  5. R. M. Davis
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  6. H. Wang
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  7. H. W. Gibson
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  8. C. Brands
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  9. J. R. Heflin
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Neyman, P.J., Guzy, M.T., Shah, S. et al. Enhanced Second Order Nonlinear Optical Susceptibilities in Ionically Self-Assembled Films Incorporating Dianionic Molecules. MRS Online Proceedings Library 660, 830 (2000). https://doi.org/10.1557/PROC-660-JJ8.30

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  • DOI: https://doi.org/10.1557/PROC-660-JJ8.30

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