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一种利用嵌段聚合物作为配体,与稀土离子络合制备一种具备特殊结构的高荧光性能复合材料的方法。嵌段聚合物中的P4VP链段中含有吡啶环,能够为稀土离子提供配位键,邻菲啰啉作为第二配体,并且以DMF作为溶剂。这里用到的稀土离子为铕,它作为交联中心,以稀土离子作为核心与嵌段聚合物的吡啶环配位交联;同时,嵌段聚合物上的亲油部分可以溶于DMF中,这样形成的络合物可以分散于溶剂中,不至于团聚或沉淀。用核磁(~1H NMR)和紫外光谱表征其结构,利用透射电镜(TEM)和荧光光谱仪(FS)等研究其形貌结构和荧光性能,通过调整比率来控制其尺寸大小和荧光强度。
A method using a block polymer as a ligand and complexing with a rare earth ion to prepare a high-fluorescence composite material with a special structure. The P4VP segment in the block polymer contains a pyridine ring, which is capable of providing coordination bonds for rare earth ions, o-phenanthroline as the second ligand, and DMF as the solvent. The rare earth ions used here are europium, which serves as a cross-linking center and is coordinated with the pyridine ring of the block polymer by using rare earth ions as a core. Meanwhile, the lipophilic part of the block polymer can be dissolved in DMF, The complex so formed can be dispersed in a solvent without agglomeration or precipitation. Their structures were characterized by 1H NMR and UV spectroscopy. Their morphology and fluorescence were characterized by transmission electron microscopy (TEM) and fluorescence spectroscopy (FS). The size and fluorescence intensity were controlled by adjusting the ratio.