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Preparation, physicochemical and third order nonlinear optical properties of bis(tetrabutylammonium)bis(2-thioxo-1,3-dithiole-4,5-dithiolato)mercurate(II)

✍ Scribed by X. Q. Wang; Q. Ren; J. Sun; H. L. Yang; T. B. Li; H. L. Fan; G. H. Zhang; D. Xu; J. H. Zhao

Publisher
John Wiley and Sons
Year
2009
Tongue
English
Weight
347 KB
Volume
44
Category
Article
ISSN
0232-1300

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✦ Synopsis

Abstract

Bis(tetrabutylammonium)bis(2‐thioxo‐1,3‐dithiole‐4,5‐dithiolato)mercurate(II) was prepared and characterized by elemental analyses, electronic absorption, infrared and X‐ray powder diffraction spectroscopy. The specific heat of the crystal was measured to be 1878.2 J.mol^–1^K^–1^ at 300 K. The thermal decomposition process was investigated by means of thermogravimetric analysis and differential thermal analysis measurements in air together with infrared and X‐ray powder diffraction spectra. The third‐order nonlinear optical properties at 800 nm were measured by femtosecond optical Kerr gate technique by using CS~2~ as reference. The third‐order optical susceptibility of its acetone solution at the concentration of 9.27 × 10^–4^ M was obtained to be 2.53 × 10^–14^ esu. The second‐order hyperpolarizability was estimated to be 1.7 × 10^–32^ esu and the response time was about 226 fs. The third order nonlinear optical properties at 532 nm were investigated by using the Z‐scan technique with 20 ps. It exhibited self‐focusing effect and saturable absorption. The second molecular hyperpolarizability was estimated to be 8.4 × 10^–32^ esu. (© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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