Organic−Organic Heteroepitaxy of Red-, Green-, and Blue-Emitting Nanofibers
journal contributionposted on 26.10.2010 by Clemens Simbrunner, Francesco Quochi, Gerardo Hernandez-Sosa, Martin Oehzelt, Roland Resel, Günter Hesser, Martin Arndt, Michele Saba, Andrea Mura, Giovanni Bongiovanni, Helmut Sitter
Any type of content formally published in an academic journal, usually following a peer-review process.
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.