Fa. Chmilenko et al., ASSOCIATES OF POLY(SULFONYLPIPERIDINYLMETHYLENE HYDROXIDE) WITH SULFOPHTHALEINS AND THEIR CHEMICAL ANALYTICAL PROPERTIES, Journal of analytical chemistry, 52(7), 1997, pp. 632-635
The interaction of a cationic polymer of sulfonylpiperidinylmethylene
hydroxide with anions of sulfophthalein dyes was studied. The formatio
n of ion associates of the polycation with anionic forms of Bromopheno
l Blue, Phenol Red, and Pyrocatechol Violet of the stoichiometric comp
ositions 1 : 1 and 1 : 2 was found. A procedure for determining this c
ation was developed with the aim of monitoring the process of Its synt
hesis.