The inorganicpigmentsmalachite,Egyptianblue,Ercolanoblueandchromeyellowhavebeendoped with theneutralhomolepticLn(III)complexLn(Tp)3 (Ln¼Eu, Tb;Tp¼hydrotris(pyrazol-1-yl)borate)in the presenceofarabicgumoracrylicemulsionasbinders,inordertoobtainphotoluminescentmaterials of interestforculturalheritagerestoration.Thedopedpigmentshaveshownemissionsassociatedtof–f transitions inthevisiblerangeuponexcitationwithUVlight.ThermalandUV-lightageingshavebeen carried out.Inallthecasesthephotoluminescentbehaviourismaintained,butinthecasesofacrylic- based paintsemissionspectraandlifetimesarestronglyinfluenced bythermaltreatments.Thechoiceof binder andpigmentsinfluences thephotoluminescentbehaviourofthecorresponding film paints.
Inorganic pigments doped with tris(pyrazol-1-yl)borate lanthanide complexes: A photoluminescence study
GHENO, GIULIA;ENRICHI, FRANCESCO
2014-01-01
Abstract
The inorganicpigmentsmalachite,Egyptianblue,Ercolanoblueandchromeyellowhavebeendoped with theneutralhomolepticLn(III)complexLn(Tp)3 (Ln¼Eu, Tb;Tp¼hydrotris(pyrazol-1-yl)borate)in the presenceofarabicgumoracrylicemulsionasbinders,inordertoobtainphotoluminescentmaterials of interestforculturalheritagerestoration.Thedopedpigmentshaveshownemissionsassociatedtof–f transitions inthevisiblerangeuponexcitationwithUVlight.ThermalandUV-lightageingshavebeen carried out.Inallthecasesthephotoluminescentbehaviourismaintained,butinthecasesofacrylic- based paintsemissionspectraandlifetimesarestronglyinfluenced bythermaltreatments.Thechoiceof binder andpigmentsinfluences thephotoluminescentbehaviourofthecorresponding film paints.Pubblicazioni consigliate
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