Photographs of the composite Eu@Tb crystal under excitation at 280 nm (a), 345 nm (b), 365 nm (c) ©François Riobé
Luminescent core–shell crystals based on lanthanide tris-dipicolinate complexes were obtained from the successive growing of two different lanthanide complex layers. Selective or simultaneous emission of each part of the crystal can be achieved by a careful choice of the excitation wavelength.
References: Cristina M. Balogh, Laurent Veyre, Guillaume Pilet, Cyril Charles, Laurent Viriot, Chantal Andraud, Chloé Thieuleux, François Riobé & Olivier Maury. Two-color three-state luminescent lanthanide core-shell crystals. Chem. Eur. J. 12 janvier 2017. DOI: 10.1002/chem.201605728
Support: Financial support from the "ARC Région Rhône-Alpes" (grant to C.M.B.) and the ANR SCOSIMLIGHT (ANR-13-BS07-0022-01).