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2007 | 5 | 2 | 236-243
Tytuł artykułu

Spectral study on the molecular orientation of a tetracationic porphyrin dye on the surface of layered silicates

Treść / Zawartość
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
Tetracationic porphyrin dyes TMPyP and ZnPyP were intercalated into hydrophobized layered silicate films of three smectites. The smectites represented the layered silicate specimens of high (Fluorohectorite, Corning; FHT), medium (Kunipia F montmorillonite; KF) and low layer charge (Laponite, Laporte; LAP). The molecular orientations of the dye cations were studied by means of linearly-polarized ultraviolet-visible (UV-VIS) spectroscopy. The spectral analysis and consequent calculations of tilting angles of the transition moments at the wavelengths of Soret band transitions were in the range of 25°-35°. The determined angles indicated molecular orientation of the dye cations being almost parallel to the surface of the silicates. Slightly higher values (above 35°), determined for a FHT film, indicated either a slightly tilted orientation of the dye cations or the change of molecular comformation after the intercalation of the dye.
Wydawca

Czasopismo
Rocznik
Tom
5
Numer
2
Strony
236-243
Opis fizyczny
Daty
wydano
2007-06-01
online
2007-06-01
Twórcy
  • Department of Hydrosilicates, Institute of Inorganic Chemistry, Slovak Academy of Sciences, 842 36, Bratislava, Slovakia, uachalex@savba.sk
  • Department of Hydrosilicates, Institute of Inorganic Chemistry, Slovak Academy of Sciences, 842 36, Bratislava, Slovakia
  • Department of Hydrosilicates, Institute of Inorganic Chemistry, Slovak Academy of Sciences, 842 36, Bratislava, Slovakia
autor
  • National Institute for Materials Science, Namiki 1-1, Tsukuba, Ibaraki, 305-0044, Japan
Bibliografia
  • [1] J. Bujdák and N. Iyi: “Molecular orientation of rhodamine dyes on surfaces of layered silicates”, J. Phys. Chem. B, Vol. 109, (2005), pp. 4608–4615. http://dx.doi.org/10.1021/jp0470039[Crossref]
  • [2] J. Bujdák, N. Iyi, Y. Kaneko, A. Czímerová and R. Sasai: “Molecular arrangement of Rhodamine 6G cations in the films of layered silicates: the effect of the layer charge”, Phys. Chem. Chem. Phys., Vol. 5, (2003), pp. 4680–4685. http://dx.doi.org/10.1039/b305699f[Crossref]
  • [3] V.R.L. Constantino, C.A.S. Barbosa, M.A. Bizeto and P.M. Dias: “Intercalation comounds involving inorganic layered structures”, An. Acad. Bras. Cienc., Vol. 72, (2000), pp. 45–49.
  • [4] A. Czímerová, J. Bujdák and A. Gáplovský: “The aggregation of thionine and methylene blue dye in smectite dispersion”, Colloid. Surface. A: Physicochem. Eng. Aspects, Vol. 243, (2004), pp. 89–96. http://dx.doi.org/10.1016/j.colsurfa.2004.05.002[Crossref]
  • [5] G. Chen, N. Iyi, R. Sasai, T. Fujita and K. Kitamura: “Intercalation of rhodamine 6G and oxazine 4 into oriented clay films and their alignment”, J. Mater. Res., Vol. 17, (2002), pp. 1035–1040. [Crossref]
  • [6] Z. Chernia and D. Gill: “Flattening of TMPyP adsorbed on laponite. Evidence in observed and calculated UV-VIS spectra”, Langmuir, Vol. 15, (1999), pp. 1625–1633. http://dx.doi.org/10.1021/la9803676[Crossref]
  • [7] J. Dargiewicz, M. Makarska and S. Radzki: “Spectroscopic characterisation of watersoluble cationic porphyrins in sol-gel silica matrices and coatings”, Colloid. Surface. A: Physicochemical and Engineering Aspects, Vol. 208, (2002), pp. 159–165. http://dx.doi.org/10.1016/S0927-7757(02)00142-5[Crossref]
  • [8] P.M. Dias, D.L.A. de Faria and V.R.L. Constantino: “Spectroscopic studies on the interaction of tetramethylpyridylporphyrins and cationic clays”, J. Incl. Phen. and Macro. Chem., Vol. 38, (2000), pp. 251–266. http://dx.doi.org/10.1023/A:1008173315471[Crossref]
  • [9] M. Eguchi, S. Takagi, H. Tachibana and H. Inoue: “The size matching rule in di-,tri-, and tetra-cationic charged porphyrin/synthetic clay complexes: effect of the inter-charge distance and the number of charged sites”, J. Phys. Chem. Solids, Vol. 65, (2004), pp. 403–407. http://dx.doi.org/10.1016/j.jpcs.2003.10.029[Crossref]
  • [10] M. Makarska, S. Radzki and J. Legendziewicz: “Spectroscopic characterisation of the water-soluble cationic porphyrins and their complexes with Cu(II) in various solvents”, J. Alloy. Compd., Vol. 341, (2002), pp. 233–238. http://dx.doi.org/10.1016/S0925-8388(02)00099-3[Crossref]
  • [11] M. Ogawa and K. Kuroda: “Photofunctions of intercalation compounds”, Chem. Rev., Vol. 95, (1995), pp. 399–438. http://dx.doi.org/10.1021/cr00034a005[Crossref]
  • [12] R. Sasai, N. Iyi, T. Fujita, F. López Arbeloa, V. Martínez Martínez, K. Takagi and H. Itoh: “Luminescence properties of rhodamine 6G intercalated in surfactant/clay hybrid thin solid films”, Langmuir, Vol. 20, (2004), pp. 4715–4719. http://dx.doi.org/10.1021/la049584z[Crossref]
  • [13] S. Takagi, T. Shimada, T. Yui and H. Inoue: “High density adsorption of porphyrins onto clay layer without aggregation: characterisation of smectite-cationic porphyrin complex”, Chem. Lett., (2001), pp. 128–129. [Crossref]
  • [14] S. Takagi, T. Shimada, M. Eguchi, T. Yui, H. Yoshida, D.A. Tryk and H. Inoue: “High-density adsorption of cationic porphyrins on cla layer surfaces without aggregation: the size-matching effect”, Langmuir, Vol. 18, (2002), pp. 2265–2272. http://dx.doi.org/10.1021/la011524v[Crossref]
  • [15] T. Yui and K. Takagi: “Photochemistry of laminate type organic/inorganic hybrid compounds”, J. Soc. Photographic Sci. Tech. Jpn., Vol. 66, (2003), pp. 326–340.
Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.-psjd-doi-10_2478_s11534-007-0010-0
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