The Influence of Chemical Composition on Color of Lead-Silicate Glasses Caused by Gold Nanoparticles
The influence of lead content in the K<sub>2</sub>O-PbO-SiO<sub>2 </sub>system on the color of glasses caused by plasmon resonance of gold nanoparticles is discussed. It has been shown that in glasses with high lead content a longer time of secondary heat treatment (“striking”) and high temperature affect a hypsochromic shift of plasmon frequency in UV-vis spectra, while for the remaining compositions a bathochromic effect is observed. This is explained by the change in the structural role of lead in the silicate matrix.