Scanning tunneling microscopy and computational study of the self-directed growth of 1,3-butadiene and 2,3-dimethyl-1,3-butadiene on hydrogen-terminated silicon(1 0 0)-2 × 1

Steric hindrance between surface hydrogen atoms and methyl groups on 2,3-dimethyl-1,3-butadiene results in linear organic nanostructure formation on H-silicon(1 0 0)-2 × 1.