title: Effect of surface pressure on the insulator to metal transition of a langmuir polyaniline monolayer.
abstract: A remarkable change in the conductivity of a polyaniline (PAN) Langmuir monolayer in the conducting state, as a function of surface pressure, has been observed using scanning electrochemical microscopy (SECM). The film conductivity, as expressed by the SECM current response of a redox mediator, was measured in-situ in a Langmuir film balance. The conductivity of the film increases significantly with surface pressure, above a threshold value of ca. 20 mN m-1.
authors.affiliation: Department of Chemistry, University of Warwick, Coventry CV4 7AL, UK.
authors.forename: Jie
authors.initials: J
authors.lastname: Zhang
authors.forename: Anna L
authors.initials: AL
authors.lastname: Barker
authors.forename: Daniel
authors.initials: D
authors.lastname: Mandler
authors.forename: Patrick R
authors.initials: PR
authors.lastname: Unwin