Electrical switching based on dimensionality transitions in nanostructured polymers

Tutkimustuotos: Lehtiartikkelivertaisarvioitu

Tutkijat

Organisaatiot

  • University of Helsinki
  • VTT Technical Research Centre of Finland
  • University of Groningen

Kuvaus

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 1d' 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 achieved temperature controlled switching based on electronic conductivity.

Yksityiskohdat

AlkuperäiskieliEnglanti
Sivut1498-1501
Sivumäärä4
JulkaisuSynthetic Metals
Vuosikerta102
Numero1-3
TilaJulkaistu - kesäkuuta 1999
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

    Tutkimusalat

  • functional materials, nanostructures, polymers, self-organization, supramolecular concepts

ID: 4706112