Get access
Advertisement

Tuning the Stability of Graphene Layers by Phthalocyanine-Based oPPV Oligomers Towards Photo- and Redoxactive Materials

Authors

  • Linda Brinkhaus,

    1. Department of Chemistry and Pharmacy & Interdisciplinary Center for Molecular Materials, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91058 Erlangen, Germany, Fax: (+) 49 9131 8528307; Tel: (+) 49 9131 852 7340
    Search for more papers by this author
  • Georgios Katsukis,

    1. Department of Chemistry and Pharmacy & Interdisciplinary Center for Molecular Materials, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91058 Erlangen, Germany, Fax: (+) 49 9131 8528307; Tel: (+) 49 9131 852 7340
    Search for more papers by this author
  • Jenny Malig,

    1. Department of Chemistry and Pharmacy & Interdisciplinary Center for Molecular Materials, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91058 Erlangen, Germany, Fax: (+) 49 9131 8528307; Tel: (+) 49 9131 852 7340
    Search for more papers by this author
  • Rubén D. Costa,

    1. Department of Chemistry and Pharmacy & Interdisciplinary Center for Molecular Materials, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91058 Erlangen, Germany, Fax: (+) 49 9131 8528307; Tel: (+) 49 9131 852 7340
    Search for more papers by this author
  • Miguel Garcia-Iglesias,

    1. Departemento de Química Orgánica, Universidad Autónoma de Madrid, Cantoblanco, 28049, Madrid, Spain, Fax: (+) 34 914973966; Tel: (+) 34 914974151
    Search for more papers by this author
  • Purificación Vázquez,

    1. Departemento de Química Orgánica, Universidad Autónoma de Madrid, Cantoblanco, 28049, Madrid, Spain, Fax: (+) 34 914973966; Tel: (+) 34 914974151
    Search for more papers by this author
  • Tomás Torres,

    Corresponding author
    1. Departemento de Química Orgánica, Universidad Autónoma de Madrid, Cantoblanco, 28049, Madrid, Spain, Fax: (+) 34 914973966; Tel: (+) 34 914974151
    2. IMDEA-Nanociencia, c/Faraday, 9, Cantoblanco, 28049 Madrid, Spain
    • Tomás Torres, Departemento de Química Orgánica, Universidad Autónoma de Madrid, Cantoblanco, 28049, Madrid, Spain, Fax: (+) 34 914973966; Tel: (+) 34 914974151.

      Dirk M. Guldi, Department of Chemistry and Pharmacy & Interdisciplinary Center for Molecular Materials, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91058 Erlangen, Germany, Fax: (+) 49 9131 8528307; Tel: (+) 49 9131 852 7340

    Search for more papers by this author
  • Dirk M. Guldi

    Corresponding author
    1. Department of Chemistry and Pharmacy & Interdisciplinary Center for Molecular Materials, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91058 Erlangen, Germany, Fax: (+) 49 9131 8528307; Tel: (+) 49 9131 852 7340
    • Tomás Torres, Departemento de Química Orgánica, Universidad Autónoma de Madrid, Cantoblanco, 28049, Madrid, Spain, Fax: (+) 34 914973966; Tel: (+) 34 914974151.

      Dirk M. Guldi, Department of Chemistry and Pharmacy & Interdisciplinary Center for Molecular Materials, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91058 Erlangen, Germany, Fax: (+) 49 9131 8528307; Tel: (+) 49 9131 852 7340

    Search for more papers by this author

Abstract

In contrast to pristine zinc phthalocyanine (1), zinc phthalocyanine based oPPV-oligomers (2–4) of different chain lengths interact tightly and reversibly with graphite, affording stable and finely dispersed suspensions of mono- to few-layer graphene—nanographene (NG)—that are photoactive. The p-type character of the oPPV backbones and the increasing length of the oPPV backbones facilitate the overall π–π interactions with the graphene layers. In NG/2, NG/3, and NG/4 hybrids, strong electronic coupling between the individual components gives rise to charge transfer from the photoexcited zinc phthalocyanines to NG to form hundreds of picoseconds lived charge transfer states. The resulting features, namely photo- and redoxactivity, serve as incentives to construct and to test novel solar cells. Solar cells made out of NG/4 feature stable and repeatable photocurrent generation during several ‘on-off’ cycles of illumination with monochromatic IPCE values of around 1%.

Get access to the full text of this article

Ancillary