A zinc phthalocyanine based periodic mesoporous organosilica exhibiting charge transfer to fullerenes

Florian Auras, Yan Li, Florian Löbermann, Markus Döblinger, Jörg Schuster, Laurence M. Peter, Dirk Trauner, Thomas Bein

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17 Citations (Scopus)

Abstract

Periodic mesoporous organosilica (PMO) materials offer a strategy to position molecular semiconductors within a highly defined, porous network. We developed thin films of a new semiconducting zinc phthalocyaninebridged PMO exhibiting a face-centered orthorhombic pore structure with an average pore diameter of 11 nm. The exceptional degree of order achieved with this PMO enabled us to create thin films consisting of a single porous domain throughout their entire thickness, thus providing maximal accessibility for subsequent incorporation of a complementary phase. The phthalocyanine building blocks inside the pore walls were found to be well-aggregated, enabling electronic conductivity and extending the light-harvesting capabilities to the near IR region. Ordered 3D heterojunctions capable of promoting photo-induced charge transfer were constructed by impregnation of the PMO with a fullerene derivative. When integrated into a photovoltaic device, the infiltrated PMO is capable of producing a high open-circuit voltage and a considerable photocurrent, which represents a significant step towards potential applications of PMOs in optoelectronics.

Original languageEnglish
Pages (from-to)14971-14975
Number of pages5
JournalChemistry - A European Journal
Volume20
Issue number46
DOIs
Publication statusPublished - 10 Nov 2014

Keywords

  • Mesoporous materials
  • Organic electronics
  • Organic-inorganic hybrid materials
  • Periodic mesoporous organosilica
  • Phthalocyanines

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    Auras, F., Li, Y., Löbermann, F., Döblinger, M., Schuster, J., Peter, L. M., Trauner, D., & Bein, T. (2014). A zinc phthalocyanine based periodic mesoporous organosilica exhibiting charge transfer to fullerenes. Chemistry - A European Journal, 20(46), 14971-14975. https://doi.org/10.1002/chem.201404169