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Morphology, Structure, and Enhanced Intramolecular Conduction in Ultralong Conjugated Polymer Brushes
The morphological, structural, and electrical properties of poly(3-methylthiophene) polymer brush films grown on indium tin oxide up to 120 nm thick are reported. Optical spectroscopy experiments indicate that the average orientation of polymer chains is nearly isotropic at thicknesses below 10 nm and above 30 nm, and exhibits mild vertical anisotropy in between. Atomic force microscopy shows that the film surfaces consist of column-shaped domains with an average cross-sectional area (2.3 × 10doi:10.1021/acs.jpcc.8b00033.s001 fatcat:deq5ohsrhbey7p52gtj6tdpaeq