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    Item type:Publication, Access status: with files ,
    Synthesis of organic–inorganic hybrids based on the conjugated polymer P3HT and mesoporous silicon
    (Elsevier, 2022-08-13)
    Gostkowska-Lekner, Natalia
    ;
    Kojda, Sandrino Danny
    ;
    Hoffmann, Jan Ekkehard
    ;
    May, Manfred
    ;
    Huber, Patrick
    Organic–inorganic hybrids are a class of functional materials that combine favorable properties of their constituents to achieve an overall improved performance for a wide range of applications. This article presents the synthesis route for P3HT-porous silicon hybrids for thermoelectric applications. The conjugated polymer P3HT is incorporated into the porous silicon matrix by means of melt infiltration. Gravimetry, sorption isotherms and energy dispersive X-ray spectroscopy (EDX) mapping indicate that the organic molecules occupy more than 50% of the void space in the inorganic host. We demonstrate that subsequent diffusion-based doping of the confined polymer in a FeCl3 solution increases the electrical conductivity of the hybrid by five orders of magnitude compared to the empty porous silicon host.
    Publicationtype: Journal Article
    Scopus© Citations 6  47  70
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    Item type:Publication, Access status: without files ,
    Solid phases of spatially nanoconfined oxygen: a neutron scattering study
    (2014-01-14)
    Kojda, Danny
    ;
    Wallacher, Dirk
    ;
    Baudoin, Simon
    ;
    Hansen, Thomas
    ;
    Huber, Patrick
    We present a comprehensive neutron scattering study on solid oxygen spatially confined in 12 nm wide alumina nanochannels. Elastic scattering experiments reveal a structural phase sequence known from bulk oxygen. With decreasing temperature cubic γ-, orthorhombic β- and monoclinic α-phases are unambiguously identified in confinement. Weak antiferromagnetic ordering is observed in the confined monoclinic α-phase. Rocking scans reveal that oxygen nanocrystals inside the tubular channels do not form an isotropic powder. Rather, they exhibit preferred orientations depending on thermal history and the very mechanisms, which guide the structural transitions. © 2014 AIP Publishing LLC.
    Publicationtype: Journal Article
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