Monomer with conjugated triple bonds

Wegner G. Topochemical reactions of monomers with conjugated triple bonds. VI. Topochemical polymerization of monomers with conjugated triple bonds. Makromol Chem 1972 154 35-48. 

The topochemical polymerization of monomers with conjugated triple bonds is an interesting example of the relationship between packing properties and reactivity in the solid state. For solid state polymer-izability the monomer molecules must be arranged in a herringbone-like structure according to Figure 1 so that only one nearest distance between the triple bonds of adjacent molecules of 3 to 4 A is affected. To... 

Wegner, G. Topochemical Reactions of Monomers with Conjugated Triple Bonds. Makromol. Chem. 154 (1972) 35-46. 

Stereoregular polymers with conjugated double and triple bonds in the main chain have been obtained by solid state polymerization from a number of oligoacetylenes with conjugated triple bonds (84). The polymerization of two such monomers is illustrated in Scheme 15. The configuration of the double bonds connecting the monomeric units in these polymers is always trans. The crystalline monomer phase functions as a three-dimensional... 

Mo catalysts are uniquely effective in the polymerization of S-containing disubstituted acetylenes. Though there is a possibility that S and O in the monomer deactivate group 5 and 6 transition metal catalysts, the basicity of S is weakened by the conjugation with the triple bond, resulting in the lower coordinating ability to the propagating... 

Photopolymerization in the crystalline state. The solid-state polymerization of monomers with two conjugated triple bonds is best described as a 1-4 addition polymerization yielding a polymer with a backbone of conjugated unsaturated bonds. 

A template mechanism was also proposed for spontaneous polymerization of propargyl chloride in the presence of poly(4-vinylpyridine). The reaction consists of partial (6-8%) alkylation of P4VPy by propargyl chloride which leads to stable complex P4VPy with monomer and then to polymerization. The product obtained contains a conjugated bond system formed by opening triple bonds in the monomer according to reaction ... 

Arnold, D.P. James, D.A. Dimers and model monomers of nickel(II) octa-ethylporphyrin substituted by conjugated groups comprising combinations of triple bonds with double bonds and arenas. I. J. Org. Chem. 1997, 62(11), 3460-3469. 

---