A novel red emitting material based on polyoxometalate@periodic mesoporous organosilica

TitleA novel red emitting material based on polyoxometalate@periodic mesoporous organosilica
Publication TypeJournal Article
Year of Publication2016
AuthorsGranadeiro CM a, Ribeiro SO a, Kaczmarek AM b, Cunha-Silva L a, d Almeida PL c, Gago S e, Van Deun R b, de Castro B a, Balula SS a
JournalMicroporous and Mesoporous Materials
KeywordsComposite materials, Coordination environment, Efficient energy transfer, Energy transfer, Ethylene, Europium, Functionalized materials, Luminescence, Luminescent material, Mesoporous materials, Mesoporous Silica, Oxides, Periodic mesoporous organosilicas, Polyoxometalates, Rare earth elements, Red-emitting materials, Silica

The first lanthanopolyoxometalate-supported bifunctional periodic mesoporous organosilica (BPMO) composite is here reported. The incorporation of decatunsgstoeuropate anions ([Eu(W5O18)2]9−) within the porous channels of an ethylene-bridged TMAPS-functionalized BPMO produced a luminescent material exhibiting a strong red emission under UV irradiation. Photoluminescence studies showed an efficient energy transfer process to the lanthanide emitting center in the material (antenna effect). A significant change in the coordination environment of Eu3+ ions was observed after its incorporation into the TMAPS-functionalized material. The possible reason for this is discussed within the paper. © 2016 Elsevier Inc.