title: Self-assembly of poly(9,9'-dihexylfluorene) to form highly ordered isoporous films via blending.
abstract: Highly ordered hexagonal arrays of isoporous films prepared from poly(9,9'-dihexylfluorene) and polystyrene-grafted silica nanoparticles (Si-graft-PS) are presented. These close-packed arrays were formed in areas of many square millimeters. The pore size varied from 3.6 to 8.5 microm, depending on the concentration of Si-graft-PS and the processing conditions. Solid-state photoluminescence resulted in a significant red shift of up to 30 nm in these films compared to that in conventional processing techniques. These differences are attributed to enhanced aggregation of the polymers caused by polymer-solvent interactions. These highly ordered polymer films may find use in microelectronic and biological and/or chemical sensor applications.
authors.affiliation: School of Chemical Science and Engineering, Royal Institute of Technology (KTH), Stockholm, Sweden 100 44.
authors.forename: George
authors.initials: G
authors.lastname: Vamvounis
authors.forename: Daniel
authors.initials: D
authors.lastname: Nyström
authors.forename: Per
authors.initials: P
authors.lastname: Antoni
authors.forename: Mikael
authors.initials: M
authors.lastname: Lindgren
authors.forename: Steven
authors.initials: S
authors.lastname: Holdcroft
authors.forename: Anders
authors.initials: A
authors.lastname: Hult