Electrical switching based on dimensionality transitions in nanostructured polymers

Olli Ikkala (Corresponding Author), Janne Ruokolainen, R. Mäkinen, Mika Torkkeli, Ritva Serimaa, Tapio Mäkelä, Gerrit ten Brinke (Corresponding Author)

    Research output: Contribution to journalArticleScientificpeer-review

    13 Citations (Scopus)


    Supramolecular hierarchical conducting nanostructures are obtained by complexing amphiphilic oligomers with block copolymers. Nominally each pyridine group of poly(styrene)-block-poly(4-vinyl pyridine), i.e. (PS-block-P4VP), is first protonated by methane sulphonic acid (MSA) to yield PS-block-P4VP(MSA.)1.0. It is further hydrogen bonded with stoichiometric amount of pentadecyl phenol (PDP) to form PS-block-P4VP(MSA)1.0(PDP)1.0. The polyelectrolytic domains are subject to reversible phase transitions from ”semi Id” slabs to 2d lamellae and further to 1d cylinders upon heating. The transitions manifest in the thermally activated conductivity. Extension to conjugated polymers is discussed to achieve temperature controlled switching based on electronic conductivity.
    Original languageEnglish
    Pages (from-to)1498-1501
    Number of pages4
    JournalSynthetic Metals
    Issue number1-3
    Publication statusPublished - 1999
    MoE publication typeA1 Journal article-refereed
    EventInternational Conference on Science and Technology of Synthetic Metals, ICSM '98 - Montpellier, France
    Duration: 12 Jul 199818 Jul 1998


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