6533b827fe1ef96bd12872cd
RESEARCH PRODUCT
Aggregation of Free-Base Octacarboxyphthalocyanine in Aqueous Solutions
subject
carboxylated phthalocyaninesUV-VIS spectraaggregation in aqueous solutiondescription
Results of spectral (UV-VIS) investigations on the aggregation phenomena of the freebase 2,3,9,10,16,17,23,24-octacarboxypthalocyanine are reported. Phthalocyanine exists mainly in associated (aggregated) froms in water. The aggregates are present even in very diluted (10-7 -10-6 mol/dm-3) solutions. The hydrogen bonding between the carboxyl groups of the adjacent molecules in considered. The increase in pH and temperature, as well as the presence of the cationic surfactant and alcohols (in an appropriate quantity) cause a prtial or full disaggregation. The spectrum of the monomeric phthalocyanine from has been observed. The increase in H2Pc(COOH)8 concentration, the decrease in pH, as well as ethanol in the solutions favour the phthalocyanine association.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1999-01-01 | Polish Journal of Chemistry |