CONCENTRATION DEPENDENCE OF DILUTE HCL ON DIMERIZATION OF ZnTSPC IN AQUEOUS SOLUTION

摘要

The pH dependence of Zinc(II)tetrasulfonated phthalocyanine inaqueous solution has been investigated.The tendency of dimerization wasenhanced by the addition of HCl,with blue-shifted peaks appearing in theQ band as well as the Soret band region.And the demetallation of metallo-phthalocyanines caused by the acid was confirmed by spectroscopic evidencefor the first time.The effect caused by NaOH was also discussed.