Series of meta- and para-substituted butadiynylene dibenzamides were synthesized, and their solid state polymerization was studied. The meta-isomers were light sensitive but not heat sensitive. The polymerizability of para-isomers depended on the type of N-substitutents. The polydiacetylenes from the para-isomers were blue, while those of the meta-isomers were light purple. Studies with molecular models and computer imaging suggested that hydrogen bonding between the topochemically polymerizable dibenzamides in the polymerization array is rather unlikely.