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White light emission of core-shell silica nanoparticles, functionalised with naphthalimide and tetrazine

Naphthalimide derivatives encapsulated in silica nanoparticles a deep blue fluorescence (emission colour in a CIE 1931 chromaticity diagram x = 0.16; y = 0.19) is observed. When, tetrazine moieties, which exhibit yellow fluorescence (x = 0.47; y = 0.50), are grafted on their surface, the new bichromophoric nanoparticles show a white luminescence (x = 0.29; y = 0.32).



©PPSM - Malinge J. - Allain C. - Audebert P. - Cachan