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Citation: NIU Jing-Yang, WANG Jing-Ping, Bo Yan, DANG Dong-Bin, YU Li. Synthesis, Characterization and Second-order Nonlinear Optical Property of Charge/Transfer Salts Based on N-Methylpyrrolidone and H_nXmo₁₂O₄₀·mH₂O(X=P,Si,Ge)[J]. Chinese Journal of Applied Chemistry, ;2000, 17(2): 134-137. shu

Synthesis, Characterization and Second-order Nonlinear Optical Property of Charge/Transfer Salts Based on N-Methylpyrrolidone and H_nXmo₁₂O₄₀·mH₂O(X=P,Si,Ge)

1.
School of Chemistry and Chemical Engineering, He'nan University, Kaifeng 475001

Received Date: 13 September 1999
Available Online: 13 January 2000
Fund Project: 国家自然科学基金(29601002) (29601002)

The charge transfer salts, (NMPH)₃PMo₁₂O₄₀·CH₃CN(Ⅰ), (NMPH)₄SiMo₁₂-O₄₀·CH₃CN(Ⅱ) and (NMPH)₄GeMo₁₂O₄₀·CH₃CN(Ⅲ), having second-order nonlinear optical property were synthesized from N-methylpyrrolidone(NMP) and H_nXMo₁₂O₄₀·mH₂O(X=P,Si,Ge) via recrystallization in methylcyanide, and characterized by elemental analysis, IR, and reflectance spectroscopy. The results indicate that the anions of the heteropoly acids remain unchanged in charge transfer salt formation. The salts are formed through combination of the Natoms of NMP with the H₊ of the acids. Charge transfer between the anions and cations occurs under irradiation of high voltage mercury lamp. The nonlinear optical property measurements indicate the second harmonic generation intensity of the three charge transfer salts:I_Ⅰ^2k=0.3I_KDP,I_Ⅱ^2k=0 and I_Ⅲ^2k=0.02I_KDP, respectively, and the third order susceptibility of the three charge transfer salts: i_Ⅰ⁽³⁾=5.0×10^-14 esu,i_Ⅱ⁽³⁾=3.1×10^-13 esu and i_Ⅲ⁽³⁾=4.3×10^-13 esu, respectively.
- heteropoly acid,
- N-methylpyrrolidone,
- nonlinear optical property
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Synthesis, Characterization and Second-order Nonlinear Optical Property of Charge/Transfer Salts Based on N-Methylpyrrolidone and HnXmo12O40·mH2O(X=P,Si,Ge)

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通讯作者: 陈斌, bchen63@163.com

Synthesis, Characterization and Second-order Nonlinear Optical Property of Charge/Transfer Salts Based on N-Methylpyrrolidone and H_nXmo₁₂O₄₀·mH₂O(X=P,Si,Ge)