Abstract
Polysilanes with electron donating substituents such as polymethoxyphenylmethylsilane (II) and polydimethylaminophenylmethylsilane (III) were prepared by the condensation reaction of the corresponding dichlorosilanes with sodium. The absorption band of silicon main chain is shifted to a longer wavelength as the increase of molecular weight up to ca. 4000 and became constant after that. The constant λmax values are 342, 351, and 361 nm for polyphenylmethylsilane (I), (II), and (III), respectively. The third-order nonlinear susceptibilities (χ(3)) were measured by the Maker fringe technique using Nd-YAG laser at 1064 nm. The χ(3) values were 2.1, 6.0, and 3.8×10−12 esu for polymers (I), (II), and (III), respectively.
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Yi, S., Maeda, N., Suzuki, T. et al. Preparation and Characterization of Polysilanes with Electron Donating Substituent. Polym J 24, 865–870 (1992). https://doi.org/10.1295/polymj.24.865
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DOI: https://doi.org/10.1295/polymj.24.865