Synthesis and Spectral-Luminescent Properties of Octa-substituted Aluminum Phthalocyanines Bearing Biphenyloxy Groups

Russian Journal of General Chemistry - Mixed-substituted aluminum phthalocyanines bearing biphenyloxy substituents and nitro groups or 1-benzotriazole moieties in the periphery were synthesized on...     

Synthesis and spectral properties of isomers of cobalt tetrakis(dicyanophenoxy)phthalocyaninate

Russian Chemical Bulletin - 4,4´-[1,3-Phenylenebis(oxy)]- and 4,4´-(1,4-phenylenebis(oxy)]diphthalonitriles and the corresponding tetrasubstituted cobalt phthalocyaninates were...     

Metal complexes of tetrakis(2-carboxyphenylsulfanyl)phthalocyanine. Synthesis,spectral and catalytic properties

Russian Chemical Bulletin - Carboxylic acid sodium salts of the phthalocyanine derivatives with phenylsulfanyl fragments at the periphery containing MgII, CoII, CuII, and ZnII ions as central metal...     

Bulky-substituted phthalodinitriles and cobalt and copper phthalocyanines based on them: synthesis,thermal analysis and spectroscopic properties

Journal of Thermal Analysis and Calorimetry - By the nucleophilic substitution of the nitro group in 4-nitrophthalononitrile for the residues of alkoxy-substituted phenols, the synthesis of...     

Synthesis,Spectroscopic Properties and Redox Behavior Kinetics of Rare-Earth Bistetrakis-4-[3-(3,4-dicyanophenoxy)phenoxy]phthalocyaninato Metal Complexes with Er,Lu and Yb

Novel bistetrakis-4-[3-(3,4-dicyanophenoxy)phenoxy]phthalocyaninato of complexes erbium, lutetium and ytterbium were synthesized using a template fusion method to prevent any polymerization process. The complexes were separated from the reaction mixtures and characterized by NMR, IR and electron absorption spectroscopy. The spectroscopic properties of the metal phthalocyaninates in chloroform, acetone and tetrahydrofuran were studied. The regular bathochromic shift in the Er–Yb–Lu series was determined. In acetone medium all the complexes obtained were found to exist in an equilibrium state between neutral and reduced forms. The linearity of Lambert-Bouger-Beer curves makes it possible to study the kinetics of redox processes in the presence of phenylhydrazine and bromine. The lutetium complex showed better reducing properties and turned fully into the reduced form, while the erbium and ytterbium ones changed only partially. Upon oxidizing all the phthalocyaninates transformed into a mixture of oxidized and neutral-radical forms. The extinction coefficients and effective redox constants were calculated.     

Synthesis and Spectroscopic and Luminescent Properties of Er,Yb and Lu Complexes with Cyano-Substituted Phthalocyanine Ligands

Based on 4,4′-[1,3/4-phenilenebis(oxy)]phthalodinitriles, the mixture of phthalocyaninates of various structures with rare-earth metals were obtained by template fusion method minimizing the side polymerization processes. Target monophthalocyaninates were isolated from the reaction mixture and purified using column and then gel permeation chromatography. The compounds were characterized by NMR, IR spectroscopy, mass spectrometry, and elemental analysis. The spectral properties were studied and the aggregation behavior of the synthesized Er, Yb, and Lu phthalocyaninates in chloroform, acetone, and tetrahydrofuran was determined. It has been shown that lutetium complexes with 3,4-dicyanophenoxyphenoxy ligands are the least stable and least resistant to aggregation in solution, while erbium and ytterbium phthalocyaninates proved to be stable in all studied media. The quantum yields and fluorescence lifetimes of the complexes in chloroform and tetrahydrofuran were calculated.     

Pincer Receptors for Anions Based on Triazolyl Bile Acids

Copper-catalyzed 1,3-dipolar cycloaddition of azides to acetylenes successfully afforded pincer bistriazolium receptor containing two lithocholic acid fragments and phenylphosphonic diamide bridge. The obtained receptor showed high complexing power toward fluoride ions and organic acid anions, which decreased in the series fluoride > succinate ≥ malonate > oxalate ≥ lithocholate > benzoate > acetate > hydrogen sulfate > bromide.