ISSN:
0025-116X
Keywords:
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Physics
Notes:
The reaction of catenapoly(diphenoxy-λ5-phosphazene) (1) with SO3 in 1,2-dichloroethane at 15°C, applying a mole ratio m = [SO3]/[--P(OC6H5)2N - ] ≤ 1,0 and subsequent quenching with water, leads to catenapoly(diphenoxy-λ5-phosphazene-co-diphenoxy-λ5-phosphazenium hydrogen sulfate) (2) containing up to 57% protonated nitrogen. At m 〉 1,0 C-sulfonation occurs, resulting in the formation of water-soluble catenapoly[diphenoxy-λ5-phosphazene-co-diphenoxy-λ5-phosphazenium hydrogen sulfate-co-bis(sulfophenoxy)-λ5-phosphazenium hydrogen sulfate] (3). The latter can be converted into catenapoly[diphenoxy-λ5-phosphazene-co-bis(sulfophenoxy)-λ5-phosphazene] (4b) by treatment with alkali and subsequent percolating through a cation exchange resin. Analytical results show that C-sulfonation is preceded by the formation of a polymer-SO3 donor-acceptor complex.
Additional Material:
1 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/macp.1989.021900120
