title: A zinc phthalocyanine based periodic mesoporous organosilica exhibiting charge transfer to fullerenes.
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 phthalocyanine-bridged 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.
authors.affiliation: Department of Chemistry and Center for Nanoscience (CeNS), University of Munich (LMU), Butenandtstraße 5-13, 81377 Munich (Germany).
authors.forename: Florian
authors.initials: F
authors.lastname: Auras
authors.forename: Yan
authors.initials: Y
authors.lastname: Li
authors.forename: Florian
authors.initials: F
authors.lastname: Löbermann
authors.forename: Markus
authors.initials: M
authors.lastname: Döblinger
authors.forename: Jörg
authors.initials: J
authors.lastname: Schuster
authors.forename: Laurence M
authors.initials: LM
authors.lastname: Peter
authors.forename: Dirk
authors.initials: D
authors.lastname: Trauner
authors.forename: Thomas
authors.initials: T
authors.lastname: Bein
keywords: mesoporous materials; organic electronics; organic-inorganic hybrid materials; periodic mesoporous organosilica; phthalocyanines