Copper 2,9(10),16(17),23(24)-and 1,8(11),15(18),22(25)-tetra-(4-carboxyphenoxy)phthalocyanines and their esters: The synthesis and liquid-crystalline properties

Abstract

tetra(4 carboxyphen oxy)phthalocyanines and their carboxylic esters were synthesized and their spectral character istics and liquid crystalline properties were studied. 2,9(10),16 (17),23(24) Tetrasubstituted complexes exhibit both thermotropic and lyotropic mesomorphism in mixtures with a number of organic solvents.

Peripherally and non-peripherally carboxylic acid substituted Cu(ii) phthalocyanine/reduced graphene oxide nanohybrids for hydrogen evolution reaction catalysts

“…1). [67][68][69] Synthesis of catalyst materials Synthesis of 2,3,9,10,16,17,23,24-octa(4-carboxyphenoxy) phthalocyanine copper(II) (3). 4,5-Di-(4-carboxyphenoxy) phthalonitrile (0.6 mmol) and anhydrous CuCl 2 (0.15 mmol) were mixed in 5 mL DMF.…”

“…Macromolecules 1 and 2 were prepared according to the procedures that have been described in the literature. [67][68][69] The newly synthesized compound 3 was prepared with the combination of carboxylic acid substituted phthalonitrile (1 eq.) and copper chloride (0.25 eq.)…”