title: Dielectrophoretic self-assembly of polarized light emitting poly(9,9-dioctylfluorene) nanofibre arrays.
abstract: Conjugated polymer based 1D nanostructures are attractive building blocks for future opto-electronic nanoscale devices and systems. However, a critical challenge remains the lack of manipulation methods that enable controlled and reliable positioning and orientation of organic nanostructures in a fast, reliable and scalable manner. To address this challenge, we explore dielectrophoretic assembly of discrete poly(9,9-dioctylfluorene) nanofibres and demonstrate site selective assembly and orientation of these fibres. Nanofibre arrays were assembled preferentially at receptor electrode edges, being aligned parallel to the applied electric field with a high order parameter fit (∼ 0.9) and exhibiting an emission dichroic ratio of ∼ 4.0. As such, the dielectrophoretic method represents a fast, reliable and scalable self-assembly approach for manipulation of 1D organic nanostructures. The ability to fabricate nanofibre arrays in this manner could be potentially important for exploration and development of future nanoscale opto-electronic devices and systems.
authors.affiliation: Tyndall National Institute-University College Cork, Lee Maltings, Cork, Ireland. alan.oriordan@tyndall.ie
authors.forename: A
authors.initials: A
authors.lastname: O'Riordan
authors.forename: D
authors.initials: D
authors.lastname: Iacopino
authors.forename: P
authors.initials: P
authors.lastname: Lovera
authors.forename: L
authors.initials: L
authors.lastname: Floyd
authors.forename: K
authors.initials: K
authors.lastname: Reynolds
authors.forename: G
authors.initials: G
authors.lastname: Redmond