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Enhanced optical nonlinearity of polyaniline-porphyrin nanocomposite

  • Rakesh K. Pandey
  • , C. S.Suchand Sandeep
  • , Reji Philip
  • , V. Lakshminarayanan*
  • *Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    Abstract

    We observe that the porphyrin derivative 4,4',4",4'"-(porphine-5, 10,15,20-tetrayl)tetrakis(benzoic acid) (PTBA) forms nanoparticles when mixed with the electrochemically formed conducting polymer polyaniline (PANI) in a DMF/water mixture. From atomic force microscopy (AFM) studies, the nanoparticles are found to be fairly uniform in size, with a dimension of around 80-100 nm and a z-height of 3-4 nm. The nonlinear optical absorption of this nanocomposite is measured at an excitation wavelength of 532 nm using the open aperture Z-scan experiment. The nanocomposite is found to show an enhanced optical limiting property compared to its constituent compounds PTBA and PANI.

    Original languageEnglish
    Pages (from-to)8630-8634
    Number of pages5
    JournalJournal of Physical Chemistry C
    Volume113
    Issue number20
    DOIs
    Publication statusPublished - 21-05-2009

    All Science Journal Classification (ASJC) codes

    • Electronic, Optical and Magnetic Materials
    • General Energy
    • Physical and Theoretical Chemistry
    • Surfaces, Coatings and Films

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