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- W2076554564 abstract "Analyses of the electronic absorption spectra and their polarization spectra of the radical anions of permethylated hexa- and octasilane and poly(cyclohexylmethylsilane) in the mixed solvents of nonpolar methylcyclohexane and polar 2-methyltetrahydrofuran at 77 K have revealed that the orbitals of the excess electrons in the radical anions are antibonding pseudo-π composed of Si 3py atomic orbitals bisecting the Si−Si−Si planes. The near-IR and UV bands of the radical anions are assigned as being due to the excitation of an electron from the SOMO pseudo-π(3py) to pseudo-π*(3py) and from the HOMO pseudo-π(3px) to antibonding-σ(3s), respectively. The near-IR band of the polysilane radical anion shows strong solvatochromic shift, which arises from the localization of the excess electron on a part of the main chain. Localization of the excess electron is proposed to be due to Anderson localization which is induced by the fluctuation of pseudo-π conjugation arising from the irregularity of the torsional angles of the Si−Si bonds." @default.
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- W2076554564 date "1999-04-22" @default.
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- W2076554564 title "Optical and Electronic Properties of Polysilane Radical Anions" @default.
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- W2076554564 doi "https://doi.org/10.1021/jp9834715" @default.
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