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Citation: Niu Jingyang, Wang Jingping, Dang Dongbin, Bo Yan. The Photosensitivity and Nonlinear Optical Properties of a Charge-Transfer Salt Based on Tungstosilicic Acid[J]. Chinese Journal of Applied Chemistry, ;1998, 15(6): 71-73. shu

The Photosensitivity and Nonlinear Optical Properties of a Charge-Transfer Salt Based on Tungstosilicic Acid

School of Chemistry and Chemical Engineering, Henan University, Kaifeng 475001

Received Date: 30 March 1998
Revised Date: 9 July 1998

A charge-transfer salt exhibiting photosensitivity and nonlinear optical property has been synthesized from tungstosilicic acid and N-methylpyrolidone and characterized by elemental analysis and IR spectrometry. The photosensitivity of the compound has been studied by diffuse reflectance electronic spectrometry and ESR measurement. The nonlinear optical property of the compound is determined by powder method. The results show that electron can be transfered between organic species and the anion under light irradiation. The compound exhibits the second- and third- order nonlinear optical properties. The third-harmonic generation intensity and the third-order susceptibility of the compound measured by second-harmonic generation technique relative to a KDP crystal were estimated to be I=0.85 I _KDP and i⁽³⁾=36 × 10^-12 esu, respectively.
- tungstosilicic acid,
- charge-transfer salt,
- photosensitivity,
- nonlinear optical property
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