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Issue 2, 2001
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Synthesis and third order nonlinear optics of a new soluble conjugated porphyrin polymer

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Abstract

The synthesis of a new soluble conjugated porphyrin polymer 4 is reported. The MALDI TOF mass spectrum shows the presence of oligomers with up to 13 repeat units and GPC gives a Mn of 53 kDa. The electronic absorption spectra of this polymer exhibit an intense Q band at 800 nm in solution and 853 nm in the solid state, demonstrating a high degree of conjugation. Electroabsorption spectroscopy shows that thin films of 4 have lower resonant third order NLO susceptibility than our previous conjugated porphyrin polymer 2, whereas closed z-scan measurements indicate that the off-resonance real susceptibility, at 1064 nm, is exceptionally large for both polymers (χ(3)R = −2 × 10−16 m2 V−2). Open z-scan measurements were also made at 1064 nm, demonstrating that the two polymers exhibit similar nonlinear absorption at this wavelength (β = 1 cm GW−1 at 0.2 mM concentration).

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Publication details

The article was received on 07 Sep 2000, accepted on 30 Oct 2000 and first published on 02 Jan 2001


Article type: Paper
DOI: 10.1039/B007250H
Citation: J. Mater. Chem., 2001,11, 312-320
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    Synthesis and third order nonlinear optics of a new soluble conjugated porphyrin polymer

    T. E. O. Screen, K. B. Lawton, G. S. Wilson, N. Dolney, R. Ispasoiu, T. Goodson III, S. J. Martin, D. D. C. Bradley<em xmlns="http://www.rsc.org/schema/rscart38" /> and H. L. Anderson, J. Mater. Chem., 2001, 11, 312
    DOI: 10.1039/B007250H

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