title: Organic-organic heteroepitaxy of red-, green-, and blue-emitting nanofibers.
abstract: Self-assembly processes and organic-organic heteroepitaxy are powerful techniques to obtain highly ordered molecular aggregates. Here we demonstrate that combining both methods allows not only to fabricate highly crystalline and uniaxially oriented self-assembled nanofibers but also to tune their polarized emission. We show that submonolayer coverage of sexithiophene on top of para-sexiphenyl nanofibers is sufficient to change their emission color from blue to green. Triband emission in the red, green, and blue is generated in nanofibers with thicker sexithiophene coverage, where layers of co-oriented crystals are separated by green-emitting molecular sheets.
authors.affiliation: Institute of Semiconductor and Solid State Physics, Johannes Kepler University Linz, Austria. clemens.simbrunner@jku.at
authors.forename: Clemens
authors.initials: C
authors.lastname: Simbrunner
authors.forename: Francesco
authors.initials: F
authors.lastname: Quochi
authors.forename: Gerardo
authors.initials: G
authors.lastname: Hernandez-Sosa
authors.forename: Martin
authors.initials: M
authors.lastname: Oehzelt
authors.forename: Roland
authors.initials: R
authors.lastname: Resel
authors.forename: Günter
authors.initials: G
authors.lastname: Hesser
authors.forename: Martin
authors.initials: M
authors.lastname: Arndt
authors.forename: Michele
authors.initials: M
authors.lastname: Saba
authors.forename: Andrea
authors.initials: A
authors.lastname: Mura
authors.forename: Giovanni
authors.initials: G
authors.lastname: Bongiovanni
authors.forename: Helmut
authors.initials: H
authors.lastname: Sitter
mesh_terms: D000327:Adsorption; D016880:Anisotropy; D003116:Color; D003460:Crystallization; D005453:Fluorescence; D005456:Fluorescent Dyes / Q000737:chemistry; D018625:Microscopy, Atomic Force / Q000379:methods; D046529:Microscopy, Electron, Transmission / Q000379:methods; D008856:Microscopy, Fluorescence / Q000379:methods; D057139:Nanofibers / Q000737:chemistry*; D036103:Nanotechnology / Q000379:methods*; D013053:Spectrophotometry / Q000379:methods; D014961:X-Ray Diffraction
chemical_list: D005456:Fluorescent Dyes