ISSN:
0025-116X
Keywords:
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Physics
Notes:
Existing evidence suggests that the solid-state polymerization of disubstituted diacetylenes is controlled by (a) the packing of the monomeric units in the crystal lattice, and (b) the elastic strain which is present in partially polymerized crystals. To investigate these ideas further, a number of closely related bis(arylsulfonate) derivatives of 2,4-hexadiyne-1,6-diol, analogous materials to the extensively investigated bis(p-toluenesulfonate) ester of this diol, have been synthesized, and their solid-state reactivity studied. Topochemical polymerization was observed only for those compounds with benzenesulfonate and p-methoxybenzenesulfonate substituents. In the case of the latter, structurally different reactive and unreactive crystalline modifications were obtained. Polymerization kinetics for the reactive modification differ strikingly from those of the p-toluenesulfonate compound, despite the fact that the initial elastic strains in the two materials appear comparable.
Additional Material:
9 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/macp.1980.021810213
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