title: [Synthesis of asymmetric tetraarylporphyrins and its ytterbium complexes].
abstract: The synthesis of asymmetric meso-aryl-substituted porphyrins containing three 4-methoxycarbonylphenyl groups, and as a forth substituent 4-hydroxyphenyl or 4-hydroxy-3- methoxyphenyl radicals, or the isomeric 3- and 4-pyridyl substituents is described. O-alkyl derivatives of 4-hydroxyl residue are obtained. The ytterbium complexes ofthese porphyrins were synthesized and studied their luminescence spectral properties were studied. A significant difference in the lifetimes of the excited state ofytterbium complexes of esters and acids of asymmetric porphyrins is demonstrated.
authors.forename: V D
authors.initials: VD
authors.lastname: Rumiantseva
authors.forename: N V
authors.initials: NV
authors.lastname: Roshchina
authors.forename: L D
authors.initials: LD
authors.lastname: Fedorova
authors.forename: A F
authors.initials: AF
authors.lastname: Mironov
authors.forename: V M
authors.initials: VM
authors.lastname: Markushev
authors.forename: I P
authors.initials: IP
authors.lastname: Shilov
mesh_terms: D007536:Isomerism; D049449:Luminescence; D011166:Porphyrins / Q000138:chemical synthesis* / Q000737:chemistry*; D015018:Ytterbium / Q000737:chemistry*
chemical_list: D011166:Porphyrins; D015018:Ytterbium