A Series of Bisamide?Substituted Diacetylenes Exhibiting a Terminal Alkyl Odd/Even Parity Effect on Mechanoactivated Photopolymerization

Odd versus even: A series of bisamide-substituted diacetylenes with varying terminal alkyl spacer length showed unique pressure-induced photopolymerizability. The odd or even parity the gave a light-active and light-inert pristine state, respectively. It is revealed that intermolecular hydrogen bonds were highly influenced by parity, resulting in different crystalline packings photopolymerization properties.