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The method of layer-by-layer (LbL) deposition from aqueous solutions was used to obtain electrostatic self-organized composites consisting of cationic fragments of octa-[(4′-benzo-15-crown-5)oxy]phthalocyaninates of metals (Mcr8Pc)/K and anionic fragments of sodium polystyrenesulfonate or 4,4′,4″,4‴-[cobalt phthalocyaninate-2,(3),9,(10),16,(17),23,(24)-tetrayl-tetrakis(oxy)]-tetrabenzoic acid. The electronic absorption spectra of composite coatings indicate preservation of structures formed in aqueous solutions of McrPc: coaxial associates, noncoaxial associates, and high-order aggregates. An increase in the content of noncoaxial associates and the possible presence of suspension particles in the composite are observed. [ABSTRACT FROM AUTHOR]

1,7-Diamino-4-oxypentane-1,1,7,7-tetraphosphonic acid has been synthesized while searching for potential components for Sm radiopharmaceuticals. Its interaction with samarium(III) cation has been studied by C and P NMR spectroscopy in comparison with 1,5-diamino-3-oxypentane- N, N'-tetra-(methylenephosphonic acid) which is the ligand component of the osteotropic drug Samarium Sm oxabifore. NMR spectroscopy provides a simple, convenient, and informative method for studying interactions between the ligand and prospective radionuclide cation. [ABSTRACT FROM AUTHOR]

Soluble in aqueous acids phthalocyanine ligands and metallophthalocyanines, containing the peripheral pyridine fragments were synthesized from the corresponding phthalodinitriles. The quaternization of the pyridine-containing phthalocyanines using 2-chloroethanol afforded water-soluble phthalocyanine ligands and metal complexes. The new compounds were characterized by NMR, EAS, and MALDI-TOF mass spectrometry. [ABSTRACT FROM AUTHOR]

Phthalonitriles containing diphenylphosphoryl substituents as peripheral fragments were synthesized and characterized for the first time. The method of template assembly on the corresponding metal cation was used to obtain tetra- and octaphosphoryl-containing phthalocyaninates of Mg, Cu, and Co. A description is given of the method of synthesis of tetra(diphenylphosphorylmethoxy)phthalocyanine and octa(diphenylphosphoryl)methylphthalocyanine by demetallization of lithium and magnesium phthalocyaninates. The synthesized compounds were characterized using the methods of UV-, IR-, NMR H, NMR P spectroscopy and MALDI-TOF mass spectrometry. [ABSTRACT FROM AUTHOR]

The behavior of octa-(benzo-15-crown-5)phthalocyanine (HcrPc), as well as cobalt octa- and tetra-(benzo-15-crown-5)phthalocyaninates (CocrPc and CocrPc), in aqueous solutions containing cationic or anionic surfactants, such as cetyl trimethylammonium bromide (CTAB), sodium carboxymethyl cellulose (Na-CMC), and sodium dodecyl sulfate (SDS), is studied using electronic spectroscopy. The presence of eight benzo-15-crown-5 ether fragments on the periphery of the phthalocyanine ring is shown to facilitate the dissolution of Pc in an aqueous environment. The interactions between CTAB and crown-containing Pc promotes the dissolution of HcrPc; CocrPc; and, to a lesser degree, CocrPc, which is accompanied by the appearance of molecular aggregates, including heteronuclear cofacial dimers. The presence of a metal in the ring is not the necessary condition of the process. In microscopically heterogeneous medium, such as an aqueous SDS-containing solution, HcrPc is present in monomeric form at SDS concentrations close to C and in dimeric form at SDS content below C. Under similar conditions (environment, surfactant), CocrPc can exist in monomeric form at SDS concentrations much high than C. The effect of the size of cation on the form of the crown-containing Pc in an aqueous solution is illustrated by an example of HcrPc. Na-CMC promotes the dissolution of Pc and enables one to produce K/McrPc-modified films from aqueous solutions. [ABSTRACT FROM AUTHOR]