Luminescence of ytterbium complexes with octaphenyltetraazaporphyrins

Русакова, Н. В.; Kulinich, V. P.; Zhuravlev, S. A.; Shaposhnikov, G. P.; Lebedeva, T. A.; Shabanov, E. V.; Korovin, Yu. V.

doi:10.1007/s10812-006-0155-4

Cited by 3 publications

(1 citation statement)

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“…43 Moreover, outer complexes of ytterbium with octaphenyl-and octa(4-tertbutylphenyl)porphyrazines enabled to detect luminescence of ytterbium with maximum at 980 nm. 44 Modification of the phenyl substituent periphery seems to induce several interesting properties, e.g. the photosensitizing property, as has been lately shown on a series of octa(4-X-substituted-phenyl)porphyrazine magnesium (X = H, Cl, Br).…”

Section: Spectroscopic Metal Ion Binding Titrationsmentioning

confidence: 98%

Potential Aluminium(III)- and Gallium(III)-selective Optical Sensors Based on Porphyrazines

et al. 2011

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Porphyrazines possessing non-coordinating alkyl (propyl) and aralkyl (4-tert-butylphenyl) groups in the periphery were studied as optical sensors for a set of mono-, di-and trivalent cations. Investigated porphyrazines in the UV-Vis monitored titrations revealed significant responses towards aluminium and gallium cations, unlike other metal ions studied. Additionally, porphyrazine possessing 4-tert-butylphenyl peripheral substituents showed sensor property towards ruthenium cation and was chosen for further investigation. The presence of isosbestic points in absorption spectra for its titration with aluminium, gallium and ruthenium cations, accompanied by a linear Benesi-Hildebrand plot, proved complex formation. The continuous variation method was used to determine binding stoichiometry in 1:1 porphyrazine-metal ratio. X-Ray studies and density functional theory calculations were employed to investigate octa(4-tert-butylphenyl)-porphyrazine structure. The results helped to explain the observed selectivity towards certain ions. Interaction between ion and porphyrazine meso nitrogen in a Lewis acid-Lewis base manner is proposed.

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Section: Spectroscopic Metal Ion Binding Titrationsmentioning

confidence: 98%