Tungsten phosphoantimoniate-based glasses containing sodium oxide were prepared and their thermochromic and photochromic properties investigated. Thermochromism is achieved by annealing glass samples at a temperature above ...

Vitreous samples were prepared in the NaPO(3)-BaF(2)WO(3) ternary system with high WO(3) concentrations. These glasses exhibit a strong absorption in the visible due to the presence of reduced tungsten species and the use ...

Vitreous samples were prepared in the NaPO(3)-BaF(2)WO(3) ternary system with high WO(3) concentrations. These glasses exhibit a strong absorption in the visible due to the presence of reduced tungsten species and the use ...

Photochromic ormosil-phosphotungstate hybrid materials were prepared by immobilizing phosphotungstic acid, H3PW12O40, (HPW) in hybrid organic-inorganic ormosil matrices via sol-gel route, and the effect of addition of TiO2 ...

Di-ureasil organic-inorganic hybrids have been used together with Phosphotungstic acid (PWA- H3PW12O40) in the preparation of new photochromic materials. PWA was incorporated in different relative concentrations in di-ureasils ...

Rare earth (RE) tungstates with general formula REW2O6(OH)3 (RE = YIII or EuIII) were synthesized by hydrothermal method by using different citric acid contents. The prepared samples exhibit both UV and X-ray-induced ...

Tungsten phosphoantimoniate-based glasses containing sodium oxide were prepared and their thermochromic and photochromic properties investigated. Thermochromism is achieved by annealing glass samples at a temperature above ...

This work reports the use of infrared spectroscopy in the Attenuated Total Reflection (ATR) mode to analyze the interactions between polymeric bases and the spiropyran. Infrared spectroscopy helps to understand the ...

This work reports the use of infrared spectroscopy in the Attenuated Total Reflection (ATR) mode to analyze the interactions between polymeric bases and the spiropyran. Infrared spectroscopy helps to understand the ...