6533b833fe1ef96bd129ba82
RESEARCH PRODUCT
Dimerization of Copper Octacarboxyphthalocyanine in Aqueous Solutions
subject
copper octacarboxyphthalocyaninedimerizationUV/Vis spectraassociationaqueous solutiondescription
Spectral absorption UV-Vis investigations on association of copper(II) octacarboxyphthalocyanine in aqueous solutions are reported. In 5.0x10-7-5.0x10-5 mol/dm3 concentration range monomers and dimers are mainly present. The calculated dimerization constant 106dm3/mol at 25°C and the hypsochromic spectral shift for the dimer 1164 cm-1 (688 nm_ 637 nm) indicate a stack-like association of molecules and suggestpi-pi interactions between Pc macrocycles in dimer and higher aggregates, in contrast to hydrogen bonding between carboxylic groups of adjacent Pc molecules.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2005-01-01 | Polish Journal of Chemistry |