Charge Transfer Exciton in Halogen-Bridged Mixed-Valent Pt and Pd Complexes: Analysis Based on the Peierls-Hubbard Model

Wada, Yoshiki; Mitani, Tadaoki; Yamashita, Masahiro; Koda, T.

doi:10.1143/jpsj.54.3143

Cited by 204 publications

(90 citation statements)

References 29 publications

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“…The structure of the linear chain can be described as the sequence · · ·2Pt 21 2 Cl 2 2Pt 41 2Cl 2 2· · ·, where the chlorine ions are located closer to Pt 41 than to Pt 21 . This structure can be understood as a 1D charge-density wave (CDW) caused by the displacement of chlorine ions from the central position of the neighboring platinum ions [6]. The crystal exhibits an intense chain-axis-polarized absorption with a low energy edge near 2.4 eV [6].…”

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confidence: 99%

“…This structure can be understood as a 1D charge-density wave (CDW) caused by the displacement of chlorine ions from the central position of the neighboring platinum ions [6]. The crystal exhibits an intense chain-axis-polarized absorption with a low energy edge near 2.4 eV [6]. This absorption has been assigned to a charge-transfer (CT) optical excitation of an electron from Pt 21 to Pt 41 which gives a pair of Pt 31 .…”

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confidence: 99%

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Femtosecond Dynamics of the Exciton Self-Trapping Process in a Quasi-One-Dimensional Halogen-Bridged Platinum Complex

et al. 1998

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confidence: 99%

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Femtosecond Dynamics of the Exciton Self-Trapping Process in a Quasi-One-Dimensional Halogen-Bridged Platinum Complex

et al. 1998

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“…We present here the results of optical studies on a 1D metal-halogen-mixed-valence [7]. For these reasons, these materials have been the subject of extensive experimental and theoretical investigation [7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23].…”

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confidence: 99%

Evidence for modification of the electronic density of states by zero-point lattice motion in one dimension: Luminescence and resonance Raman studies of anMXsolid

et al. 1993

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“…According to theoretical studies, 13 the energy of the CT bands in mixed-valence compounds is given a 2S À U, if T and V are neglected. The lower CT energy of the present complex than the complex of ClO 4 (1.13 eV 14 ) is a consequence of a decrease in S, suggesting that the charge delocalization of this complex is larger than that of the complex of ClO 4 . This is consistent with the finding that the displacement of the bridging bromide ions in the present complexes is smaller than that of the complexes of ClO 4 À as discussed above.…”

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confidence: 63%

Tuning of Electronic Structures of Quasi-One-Dimensional Bromo-Bridged PdII–PdIV Mixed-Valence Complexes by Substituting Counter Anions

Arakawa

Kawakami

Takaishi

et al. 2007

Bulletin of the Chemical Society of Japan

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Quasi-one-dimensional halogen-bridged mixed-valence complexes (MX chains) have been attracting much attention because they show very interesting physical properties, such as intense and dichroic inter-valence charge-transfer bands, progression in the resonance Raman spectra, luminescence spectra with large Stokes-shifts, large third-order nonlinear optical properties, midgap absorptions attributable to solitons, polarons, etc.1 Theoretically, these MX chains are considered to be extended Peierls-Hubbard systems, where electron-phonon interaction (S), electron transfer (T), on-and neighbor-site Coulomb repulsion energies (U and V, respectively) compete or cooperate with each other. The Pt and Pd complexes take charge density wave (CDW) or M II -M IV mixed-valence states due to S, where the bridging halides are displaced from the midpoints between the neighboring two metal ions (Fig. 1a). Therefore, these Pt and Pd complexes are class II type for mixed-valence compounds in the Robin and Day classification.3 In these MX chain complexes, the CDW amplitudes can be tuned by varying metal ions, bridging halide ions, in-plane ligands, and counter anions. 4 Moreover, the dimensionalities of the CDW can be controlled by using the intra-and inter-chain hydrogen-bond networks. 5On the other hand, Ni complexes take Ni III Mott-Hubbard states due to the strong U, where the bridging halides are located at the midpoints between neighboring two Ni atoms (Fig. 1b). Very strong antiferromagnetic interactions among spins located on the Ni III d z 2 orbitals through the bridging halide ions are observed in these complexes.6 Therefore, the Ni complexes are class III type for mixed-valence compounds in the Robin and Day classification. These complexes have also been of recent interest in applied science because a gigantic third-order nonlinear optical susceptibility (%10 À4 e.s.

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Charge Transfer Exciton in Halogen-Bridged Mixed-Valent Pt and Pd Complexes: Analysis Based on the Peierls-Hubbard Model

Cited by 204 publications

References 29 publications

Femtosecond Dynamics of the Exciton Self-Trapping Process in a Quasi-One-Dimensional Halogen-Bridged Platinum Complex

Femtosecond Dynamics of the Exciton Self-Trapping Process in a Quasi-One-Dimensional Halogen-Bridged Platinum Complex

Evidence for modification of the electronic density of states by zero-point lattice motion in one dimension: Luminescence and resonance Raman studies of anMXsolid

Tuning of Electronic Structures of Quasi-One-Dimensional Bromo-Bridged PdII–PdIV Mixed-Valence Complexes by Substituting Counter Anions

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