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Martin Fritsch M.Sc.


Raum: U.10.18
Telefon: 0202 43903874
E-Mail: mfritsch{at}


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Titel und Abstract des Dissertationsprojektes

Polyfluorenes for Selective Wrapping of Single-Walled Carbon Nanotubes

Within this report we demonstrate the selection of semiconducting SWCNTs in a wider diameter range (0.8 – 1.6 nm) using polyfluorene derivates with alkyl chains of increasing length (hexyl to octadecyl side chains). By tuning the length of the alkyl side chains SWCNTs of different diameter can be selected. SWCNTs with diameters > 1.2 nm, for whom post-synthetic separation methods did not exist up to date, can now be selected efficiently. The high amount of semiconducting SWCNTs in the prepared dispersions, which is extremely important for applications, is demonstrated by optical spectroscopy and by fabrication of high performing field-effect transistors with mobilities up to 14 cm²V-1s-1 for holes and 16 cm²V-1s-1 for electrons (on/off ratio: 105).[1]

[1] W. Gomulya, G. D. Constanzo, E. J. Figueiredo de Carvalho, S. Z. Bisri, V. Derenskyi, M. Fritsch, N. Fröhlich, S. Allard, P. Gordiichuk, A. Herrmann, S. J. Marrink, M. C. dos Santos, U. Scherf, M. A. Loi, Adv. Mat. 2013, 25, 2948




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Widianta Gomulya , Guadalupe Diaz Costanzo , Elton J. Figueiredo de Carvalho ,Satria Zulkarnaen Bisri , Vladimir Derenskyi , Martin Fritsch , Nils Fröhlich , Sybille Allard ,Pavlo Gordiichuk , Andreas Herrmann , Siewert Jan Marrink , Maria Cristina dos Santos ,Ulrich Scherf and Maria Antonietta Loi, Advanced Materials 2013, Vol 25, 21,  2948–2956


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