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2007 | 5 | 2 | 135-150
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Dynamic effects in iron phthalocyanine-like compounds

Treść / Zawartość
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
57Fe isotope-enriched iron phthalocyanine has been synthesized and studied by the Mössbauer spectroscopic method. The samples were investigated in the temperature range 100–350 K. Some peculiarities in atomic and molecular electronic structure fluctuations were observed. The intermediate Fe oxidation states are observed and it has been found that the rate of charge redistribution is temperature-dependent. The correlation between the temperature behavior of the isomeric shift and quadrupole splitting has been demonstrated. At elevated temperatures above 300 K, the Fe2+ oxidation number is quasistable. The alteration of Fe oxidation number is associated with fluctuations of electron charges, and the electron-accepting and electron-donating properties of surrounding ligands. The energy barriers separating Fe oxidation states have been determined. The possibility of modeling Mössbauer spectra of electron-transfer systems has been shown.
Wydawca
Czasopismo
Rocznik
Tom
5
Numer
2
Strony
135-150
Opis fizyczny
Daty
wydano
2007-06-01
online
2007-02-12
Twórcy
  • Institute of Physics, LT-02300, Vilnius, Lithuania
  • Institute of Physics, LT-02300, Vilnius, Lithuania
  • Institute of Physics, LT-02300, Vilnius, Lithuania
Bibliografia
  • [1] H. Wachtel et al.: “Spin dynamics in oriented lithium phthalocyanine thin films investigated by pulsed electron spin resonance”, J. Chem. Phys., Vol. 102, (1995), pp. 5088–5093. http://dx.doi.org/10.1063/1.469559[Crossref]
  • [2] Y. Shirota: “Organic materials for electronic and optoelectronic devices”, J. Mater. Chem., Vol. 10, (2000), pp. 1–25. http://dx.doi.org/10.1039/a908130e[Crossref]
  • [3] G. De la Torre et al.: “Phthalocyanines and related compounds: organic targets for nonlinear optical applications”, J. Mater. Chem., Vol. 8, (1998), pp. 1671–1683. http://dx.doi.org/10.1039/a803533d[Crossref]
  • [4] M. Tian et al.: “Novel non-aggregated unsymmetrical metallphthalocyanines for second-order nonlinear optics”, J. Mater. Chem., Vol. 7, (1997), pp. 861–863. http://dx.doi.org/10.1039/a701606i[Crossref]
  • [5] R. Göbl et al.: “Magnetic properties of uranium ferrocyanides and ferricyanides”, Czech. J. Phys., Vol. 50, (2000), pp. 671–676. http://dx.doi.org/10.1023/A:1022818704161[Crossref]
  • [6] M. Evangelisti et al.: “Magnetic properties of α-iron (II) phthalocyanine”, Phys. Rev. B, Vol. 60, (2002), art. 144410.
  • [7] V. Gulbinas: “Transient absorption of photoexcited titanylphthalocyanine in various molecular arrangements”, Chem. Phys., Vol. 261, (2000), pp. 469–479. http://dx.doi.org/10.1016/S0301-0104(00)00234-2[Crossref]
  • [8] E. Kuzmann et al.: “ Mössbauer study of oxygenated iron-phthalocyanines, a precursor of magnetic storage material“, Hyp. Interact. Vol. 139/140, (2002), pp. 631–639. http://dx.doi.org/10.1023/A:1021291316033[Crossref]
  • [9] P.E. Dickson and F.J. Berry ed.: Mössbauer spectroscopy, Cambridge University Press, Cambridge, 1986.
  • [10] V.M. Derkatcheva et al.: “New method of preparing iron phthalocyanine”, Zh. Neorg. Khim., Vol. 26, (1981), pp. 1687–1690 (in Russian).
  • [11] I.P. Suzdalev: Gamma-resonance spectroscopy of proteins and model compounds, Moscow, Nauka, 1988 (in Russian).
  • [12] F. van der Woude and K.W. Maring: “The electronic and magnetic properties of iron-sp element alloys”, In: Proc. Intern. Confer. on Mössbauer Spectroscopy, Bucharest, pp. 1132–1161 (1977).
  • [13] A. Amulevičius et al.: “Mössbauer effect and dynamics of atoms in iron phthalocyanine“, Lithuanian J. Phys., Vol. 39, (1999), pp. 27–32.
  • [14] D.H. Jones and K.K.P. Srivastava: “Many-state relaxation model for the Mössbauer spectra of superparamagnets”, Phys. Rev. B, Vol. 34, (1986), pp. 7542–7548. http://dx.doi.org/10.1103/PhysRevB.34.7542[Crossref]
  • [15] H. Inoue et al.: “Mössbauer spectroscopic characterization of iron chlorophyllins”, Hyp. Interact., Vol. 29, (1986), pp. 1403–1406. http://dx.doi.org/10.1007/BF02399496[Crossref]
Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.-psjd-doi-10_2478_s11534-007-0003-z
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