Aromatic polyesters derived from 5,5′-disubstituted bis(m-phenylene) crown ethers
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DOI: 10.1016/j.polymer.2018.03.031
Abstract: Abstract A new monomer of the AB type, 5-carboxy-1,3-phenylene-5′-hydroxy-1′,3′-phenylene-32-crown-10 (5), was synthesized. Direct polymerizations of bis(5-hydroxy-1,3-phenylene)-32-crown-10 (13), an AA diphenolic macrocyclic monomer, with BB diacid monomer bis(5-carboxy-1,3-phenylene)-26-crown-8 (14) and its larger analog bis(5-carboxy-1,3-phenylene)-32-crown-10 (16) were… read more here.
Keywords: bis carboxy; phenylene crown; phenylene; carboxy phenylene ... See more keywords
Synthesis and Properties of Cobalt(II) Tetrakis-[4,5-di(4′-carboxy)phenylene(oxy/sulfanyl/amino)]phthalocyanines
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DOI: 10.1134/s1070363218090451
Abstract: Phthalonitriles with fragments of 4-hydroxy, 4-mercapto and 4-aminobenzoic acids were synthesized by nucleophilic substitution in 4-bromo-5-nitrophthalonitrile. The synthesized phthalonitriles were used to prepare octasubstituted cobalt phthalocyanines by template synthesis. The spectral properties of the products… read more here.
Keywords: tetrakis carboxy; synthesis properties; cobalt tetrakis; carboxy phenylene ... See more keywords