Molecular alignment of neutral and p-doped head-to-tail type poly(3-hexylthiophene-2,5-diyl) and n-alkanes on the surface of substrates

Neutral and p-doped head-to-tail poly(3-hexylthiophene-2,5-diyl), HT-P3HexTh, as well as n -alkane (e.g., triacontane and nonacosane) are aligned with the alkyl chain oriented toward the surface of substrates such as platinum plate and silicon plate. XRD data support the alignment.