The crystallization behavior and crystal structures of poly(3-hexylthiophene) (P3HT) of low molecular weight and high molecular weight on graphitic substrates with different curvatures (i.e. carbon nanotubes, carbon nanofibers and graphene) were investigated using quartz crystal microbalances (QCMs), AFM and TEM. It was discovered that P3HTs with an Mn above the chain folding threshold Mn value form nanowires from all graphitic surfaces. P3HTs with an Mn below the chain folding threshold Mn value form nanowires from graphitic surfaces with a large curvature (SWCNTs) but produce nanoribbons from graphitic surfaces with smaller curvatures (MWCNTs, CFs, and graphene). The kinetic study of P3HT crystallizations on graphitic surfaces reveals that intermolecular interactions, specific surface area and curvature have major effects on P3HT crystallization rate on graphitic surfaces.

Crystallization of poly(3-hexylthiophene) on graphitic surfaces with different curvatures

2019 Spring National Meeting

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