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Aggregation of Free-Base Octacarboxyphthalocyanine in Aqueous Solutions

Suchan A., Hurek J., Wacławek W., Nackiewicz J., Ejsmont K.

Polish Journal of Chemistry

1999

Vol. 73, nr 12

2013-2025

Results of spectral (UV-VIS) investigations on the aggregation phenomena of the freebase 2,3,9,10,16,17,23,24-octacarboxyphthalocyanine are reported. Phthalocyanine exists mainly in associated (aggregated) forms in water. The aggregates are present even in very diluted solutions. The hydrogen bonding between the carboxyl groups of the adjacent molecules is considered.