%0 Online Multimedia %A Täuber, Daniela %A Cai, Wanzhu %A Inganäs, Olle %A Scheblykin, Ivan G. %D 2017 %T Macroscopic Domains within an Oriented TQ1 Film Visualized Using 2D Polarization Imaging %U https://acs.figshare.com/articles/media/Macroscopic_Domains_within_an_Oriented_TQ1_Film_Visualized_Using_2D_Polarization_Imaging/4602226 %R 10.1021/acsomega.6b00264.ls01 %2 https://ndownloader.figshare.com/files/7449040 %K film transfer method %K TQ 1 film %K 2 D POLIM %K well-aligned films %K stripe %K Macroscopic Domains %K Petri dish %K polarization parameters %K contact line %K polymer solution %K droplet source %K millimeter-sized domains %K TQ 1 solution %K film spread %K 2 D Polarization Imaging Large-area self-assembly %K Oriented TQ 1 Film Visualized %K polymer chains %X 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-alt-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. %I ACS Publications