Täuber, Daniela Cai, Wanzhu Inganäs, Olle Scheblykin, Ivan G. Macroscopic Domains within an Oriented TQ1 Film Visualized Using 2D Polarization Imaging Large-area self-assembly of functional conjugated polymers holds a great potential for practical applications of organic electronic devices. We obtained well-aligned films of poly­[2,3-bis­(3-octyloxyphenyl)­quinoxaline-5,8-diyl-<i>alt</i>-thiophene-2,5-diyl] (TQ1) using the floating film transfer method. Thereby, a droplet of the TQ1 solution was injected on top of the surface of an immiscible liquid substrate, at the meniscus formed at the edge of a Petri dish, from where the polymer solution and the film spread in one direction. Characterization of the TQ1 film using the recently developed two-dimensional polarization imaging (2D POLIM) revealed large, millimeter-sized domains of oriented polymer chains. The irregular shape of the contact line at the droplet source induced the appearance of disordered stripes perpendicular to the spreading direction. A correlation of polarization parameters measured using 2D POLIM revealed the microstructure of such stripes, providing valuable information for further improvement and possible upscaling of this promising method. film transfer method;TQ 1 film;2 D POLIM;well-aligned films;stripe;Macroscopic Domains;Petri dish;polarization parameters;contact line;polymer solution;droplet source;millimeter-sized domains;TQ 1 solution;film spread;2 D Polarization Imaging Large-area self-assembly;Oriented TQ 1 Film Visualized;polymer chains 2017-02-01
    https://acs.figshare.com/articles/media/Macroscopic_Domains_within_an_Oriented_TQ1_Film_Visualized_Using_2D_Polarization_Imaging/4602226
10.1021/acsomega.6b00264.ls01