On the photoluminescence changes induced by ageing processes on zinc white paints

摘要: Recent research is focusing on the study of interaction mechanisms between pigments and binders, as they are crucial for understanding paint ageing conservation issues. In this work, we investigate these follow changes induced by zinc white employing Fourier Transform Infrared (FTIR) Time-Resolved Photoluminescence (TRPL) spectroscopies. The two techniques, applied thermally aged mock-up samples a 19th oil painting, provide complementary information effect binder ZnO pigment particles. characterization infrared absorption spectra confirms well-known tendency amorphous metal carboxylate formation in following ageing. At same time, film produces significant photoluminescence emission from defect centres ZnO. that mostly affected micro-environment blue band (430 nm) – associated with surface defects whereas green (530 stable. results demonstrate evolution pigment-binder system has detectable consequences crystalline structure particles speculate main cause modifications functionalization particle surfaces. possibility to crystal time-resolved can thus support chemical studies deterioration providing about interactions.