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30 April 2019 Vibration interaction between chitosan molecules and ablative silver and gold nanoparticles
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Abstract
This work presents the dependences of the absorption intensity of acid-soluble chitosan biopolymer films in the infrared region of the spectrum on the concentration of silver and gold nanoparticles of different morphology. The interaction mechanisms in the vibrational spectra overlapping area of silver nanoparticles and chitosan molecules (2500-3500 cm-1) were observed. The influence of metal nanoparticles on dipole moments of OH- , CH - chitosan molecule oscillation groups was established. This interaction leads to a linear increase of the infrared absorption intensity with an increase of the silver nanoparticles concentration, synthesized by citrate and borohydride methods. The presence of silver and gold ablative nanoparticles in the chitosan films demonstrates the infrared absorption intensity exponential decrease with metal nanoparticles concentration.
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A. V. Tcibulnikova, E. S. Zemlyakova, I. G. Samusev, V. V. Bryukhanov, and M. V. Demin "Vibration interaction between chitosan molecules and ablative silver and gold nanoparticles", Proc. SPIE 11026, Nonlinear Optics and Applications XI, 110260Y (30 April 2019); https://doi.org/10.1117/12.2518861
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