Optical properties of quasi-one-dimensional MMX-chain compounds: R4[Pt2(pop)4X].nH2O, (R=K and NH4, X=Cl and Br)

Y. Wada, T. Furuta, M. Yamashita, K. Toriumi

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25 Citations (Scopus)


Polarized reflection and luminescence spectra of single crystals of quasi-one-dimensional halogen bridged binuclear metal complexes (MMX-compounds), R4[Pt2(pop)4X].nH2O (R=K and NH4; X=Cl and Br; n=0 (R=NH4) and 3 (R=K); pop=P2O5H22-) have been measured. Intense asymmetric Lorenzian-like absorption bands caused by charge transfer excitons from Pt2+Pt2+ ions to the neighboring Pt3+Pt3+ ions polarized parallel to the chain axis have been observed. A board luminescence band with large Stokes sift energy caused by the radiative recombination of the self-trapped excitons has been observed. These features are the characteristics features of the charge density wave systems. In K4[Pt2(pop)4Cl].3H2O, coexistence of two CT-absorption bands have been observed.

Original languageEnglish
Pages (from-to)1195-1196
Number of pages2
JournalSynthetic Metals
Issue number1-3
Publication statusPublished - 1995 Mar 15

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry


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