Silizezko nanopartikulen egituraren analisia espektroskopia infragorriaren bidez

Abstract

The investigation of glassy nanomaterials is one of the main axes of amorphous material research. For the characterization of the optical properties and molecular structure of these materials, infrared reflectance measurements are useful. These analyses, however, are qualitative in character. Tetrahedral molecular structures known as Q3 and Q4 play an important role in the silica amorphous network, as they determine the topology of the network, which influences the properties of the material. Therefore, the purpose of this study is to offer a quantitative technique based on reflectance experiments for estimating the population of Q4 and Q3 structures in silica nanoparticles. To ensure their validity, the results were compared to those acquired by nuclear magnetic resonance spectroscopy.

Keywords: infrared spectroscopy, sol-gel silica, nanoglasses, nuclear magnetic resonance