Those fibers further agglomerate into micron-scale aggregates to minimize unfavored solvophobic interactions between the backbone and solvent molecules. The assembly is then mediated by massive semicrystalline agglomerates where polymer chains show minimal alignment capability due to excessively strong inter-backbone interaction induced by side-chain selective solvent. Thus, the resultant film shows the most isotropic morphology (RUV-vis = 1.02 and RGIXD of 0.83) and the highest degree of paracrystalline disorder. Correspondingly the lowest charge carrier mobility µFET (0º) = 0.11 ± 0.01 cm 2 V -1 s -1 and charge transport anisotropy µFET (0º) / µFET (90º) = 1.1 are obtained in OFET devices processed from decane.