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M. V. Galkin, Ye. V. Ageeva, D. A. Nedosekin, M. A. Proskurnin, A. Yu. Olenin, G. M. Mokrousov

Application of the thermal lens laser spectrometry to synthesis and investigation of nanocomposites based on silver salts sorbed by polyacrylate matrix


Thermal-lens laser spectrometry was used to determination of the light absorbance of the transparent nanocomposites prepared by thermal decomposition of silver salts sorbed by polyacrylate matrix. High resolution of the method determined by the waist of the laser beams used allows determining uniformity of the light absorption in the matrix. Thermal lensing compared to spectrophotometry is less affected by the light scattering of the sample. The sensitivity of determination is also higher than in the case of spectrophotometry by an order or two of a magnitude. Laser irradiation interaction with the source polyacrylic matrices filled with silver salts exhibits the possibility of local silver nanoparticles synthesis in the matrix caused by photoinduced decomposition of the silver salts. The dimensions of the zone containing formed nanoparticles correspond to the waist of the excitation laser beam used. The possibility to unite in the frames of the thermal lens experiment both the synthesis of nanoparticles and on-line determination of the light absorbance of the formed particles in nanocomposite is discussed.
Moscow University Chemistry Bulletin.
2010, Vol. 51, No. 2, P. 115

Copyright (C) Chemistry Dept., Moscow State University, 2002
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