Formation and Properties of a Hybrid Organosilica with a p-Phenylene Vinylene Polymer Partially Grafted to the Walls

Authors

  • Dr. Mireia Buaki-Sogo,

    1. Instituto de Tecnología Química CSIC-UPV and Departamento de Química, Univ. Politécnica de Valencia, Avenida de los Naranjos, s/n, 46022, Valencia (Spain)
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  • Dr. Maykel de Miguel,

    1. Instituto de Tecnología Química CSIC-UPV and Departamento de Química, Univ. Politécnica de Valencia, Avenida de los Naranjos, s/n, 46022, Valencia (Spain)
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  • Dr. Pedro Atienzar,

    1. Instituto de Tecnología Química CSIC-UPV and Departamento de Química, Univ. Politécnica de Valencia, Avenida de los Naranjos, s/n, 46022, Valencia (Spain)
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  • Prof. Mercedes Álvaro,

    1. Instituto de Tecnología Química CSIC-UPV and Departamento de Química, Univ. Politécnica de Valencia, Avenida de los Naranjos, s/n, 46022, Valencia (Spain)
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  • Prof. Hermenegildo García

    Corresponding author
    1. Instituto de Tecnología Química CSIC-UPV and Departamento de Química, Univ. Politécnica de Valencia, Avenida de los Naranjos, s/n, 46022, Valencia (Spain)
    • Instituto de Tecnología Química CSIC-UPV and Departamento de Química, Univ. Politécnica de Valencia, Avenida de los Naranjos, s/n, 46022, Valencia (Spain)
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Abstract

The present manuscript reports a mesoporous organosilica (mpSiO2) containing a p-phenylene vinylene (PPV) co-polymer partially grafted to the walls of the hybrid material (PPVequation imagempSiO2). This material was obtained by using a bis-silylated 2,5-bis(chloromethylphenylene) as the silicon precursor in combination with tetraethyl orthosilicate (TEOS) and cetyltrimethylammonium bromide (CTABr) as the surfactant. The final polymer was formed by adding appropriate amounts of 2,2′-{[2,5-bis(chloromethyl)-1,4-phenylene]bis(oxy)}diethanol as the co-monomer and KtBuO as the base. The resulting PPVequation imagempSiO2 was characterized by XRD, SEM, TEM, FTIR spectroscopy, and magic angle spinning 29Si NMR spectroscopy; all spectroscopic data were in agreement with the presence of a conducting polymer. The resulting PPVequation imagempSiO2 material exhibits electrical conductivity, particularly after I2 doping, an electrochemical response, and electroluminescence. Laser flash photolysis studies of PPVequation imagempSiO2 indicate that this material can form PPV.+ polarons that could be responsible for the electrochemical and electroluminescent response.

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