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Photochemical behavior of poly(organophosphazenes). XI. Photochemistry of poly[bis(4-benzylphenoxy) phosphazene]

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Abstract

In this paper we present results on the photolysis of poly[bis(4-benzylphenoxy)-phosphazene] in solution and in film, both in the presence and in the absence of molecular oxygen. Light irradiation of the polymer in oxygen-saturated CH2Cl2 solutions results in a remarkable degradation of the polyphosphazene, while in argon-purged solutions no appreciable variations of the polymer structure could be detected. The photolysis of poly[bis(4-benzylphenoxy)phosphazene] in films induces the cross-linking of the polymer regardless of the presence or the absence of molecular oxygen. The main process observed during the photochemistry both in solution and in the solid state of the polymer is the oxidation of the 4-benzylphenoxy group on the polyphosphazene, without involvement of the inorganic -P=N- backbone. The effect of temperature on the photolysis of the polyphosphazene substrate in film is also reported.

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Authors and Affiliations

  1. Istituto di Fotochimica e Radiazioni d'Alta Energia del Consiglio Nazionale delle Ricerche, Sezione di Legnaro, Via Romea 4, 35020, Legnaro, Padova, Italy

    F. Minto, M. Gleria & P. Bortolus

  2. Centro di Studio sulla Fotochimica e Reattivitá degli Stati Eccitati dei Composti di Coordinazione, c/o Dipartimento di Chimica, Universitá di Ferrara, Via Borsari 46, 44100, Ferrara, Italy

    M. Scoponi & F. Pradella

Authors
  1. F. Minto
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  2. M. Gleria
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  3. M. Scoponi
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  4. F. Pradella
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  5. P. Bortolus
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Minto, F., Gleria, M., Scoponi, M. et al. Photochemical behavior of poly(organophosphazenes). XI. Photochemistry of poly[bis(4-benzylphenoxy) phosphazene]. J Inorg Organomet Polym 2, 405–420 (1992). https://doi.org/10.1007/BF00701114

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  • DOI: https://doi.org/10.1007/BF00701114

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