photodegradation

The improvement of the urban microclimate combined with the reduction of the energy loads is a highly important target that requires the research and development of innovative solutions with advanced thermal and optical properties. Color changing thermochromic coatings being reflective in summertime and absorptive in wintertime can address to the demand of lower surface temperatures and lower cooling loads. The interaction though with the solar radiation results in the breaking of the chemical bonds and the degradation of their performance.