Conducting nanofibers and organogels derived from the self-assembly of tetrathiafulvalene-appended dipeptides

Siva Krishna Mohan Nalluri, Nadezhda Shivarova, Alexander L. Kanibolotsky, Mischa Zelzer, Swati Gupta, Pim Frederix, Peter J. Skabara, Helena Gleskova, Rein V. Ulijn

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69 Citations (Scopus)
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Abstract

In this article, we demonstrate the non-aqueous self-assembly of a low-molecular-mass organic gelator based on an electroactive p-type tetrathiafulvalene (TTF)-dipeptide bioconjugate. We show that a TTF moiety appended with diphenylalanine amide derivative (TTF-FF-NH2) self-assembles into one-dimensional nanofibers that further lead to the formation of self-supporting organogels in chloroform and ethyl acetate. Upon doping of the gels with electron acceptors (TCNQ/iodine vapor), stable two-component charge transfer gels are produced in chloroform and ethyl acetate. These gels are characterized by various spectroscopy (UV-vis-NIR, FTIR and CD), microscopy (AFM and TEM), rheology and cyclic voltammetry techniques. Furthermore, conductivity measurements performed on TTF-FF-NH2 xerogel nanofiber networks formed between gold electrodes on a glass surface indicate that these nanofibers show a remarkable enhancement in the conductivity after doping with TCNQ.
Original languageEnglish
Pages (from-to)12429-12437
Number of pages9
JournalLangmuir
Volume30
Issue number41
Early online date26 Sep 2014
DOIs
Publication statusPublished - 30 Sep 2014

Keywords

  • ow-molecular-mass organic gelator
  • TTF-FF-NH2
  • nanofiber networks
  • tetrathiafulvalene-appended dipeptides

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