| Luminescence of lanthanide complexes is based on the inside4f electronic, where1639different levels of4f electron configuration can produce about199177distinct transition forms, endowing these4f complexes a broad application in luminescent materials. However, due to the limit of low thermal stability and poor mechanical strength for these4f complexes, they usually should have no choice but to embed into one of inorganic or polymeric matrix to form the inorganic-organic hybrid materials.On the basis of preparing the corresponding precursor [ZnL(MeCN)] from the Schiff base ligand H2L with flexible linker (H2L=N, N’-bis(salicylidene)ethylene-1,2-diamine), assisted with the presence of excess of4-vp (4-vp=4-vinyl-pyridine), a series of hetero-trinuclear Zn2Ln-arrayed complexes [Zn2(L)2(4-vp)2Ln(NO3)3](Ln=La,1; Tb,2; Eu,3; Gd,4; Nd,5; Yb,6; Er,7) with two functional vinyl groups are obtained, respectively. Their structures are characterized by EA, UV-Vis, FT-IR,’H-NMR and X-ray single-crystal diffraction and their photophysical property are checked. The results show that the luminescence of these complexes is sensitized through both1LC and3LC of the ligand.Secondly, by free radical polymerization mechanism in the presence of AIBN as initiator, a series of PVK, PS or PMMA-supported Wolf-Type II metallopolymers with visible emissions are obtained, respectively. The results show that the relationships between different polymeric matrix and the properties of materialshas also been discussed at the same time. The results show PMMA-supported Wolf-Type II metallopolymers are relatively superior on energy transfer efficiency, color purity, molecular weight size and molecular weight distributions. Finally, through the introduction of near-infrared (NIR) luminescent Ln(III)(Ln=Nd, Yb or Er) ions, another series of PMMA-supported Wolf-Type II metallopolymers with NIR emissions are obtained, respectively, where the energy transfer mechanism and the effect of concentration quenching are explored. |
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