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研究了含共轭结构氮杂环的非离子嵌段共聚物参与形成的稀土配合物纳米胶束的形态结构及荧光性能。通过可逆加成-断裂链转移(RAFT)自由基聚合合成了聚苯乙烯-聚4-乙烯基吡啶(PS-b-P4VP)两亲性嵌段共聚物,并以邻菲罗啉(Phen)作为小分子配体协同反应,与Eu(Ⅲ)离子配位诱导自组装成具有核壳结构的荧光聚合物聚集体纳米胶束,分别采用紫外-可见吸收光谱、透射电镜、荧光光谱对胶束的结构形态及其荧光性能进行表征。结果表明,PS-b-P4VP和Phen都通过分子上的氮原子与Eu(Ⅲ)形成螯合键,在N,N-二甲基甲酰胺溶液中共同参与配位络合形成了聚集体;PS-b-P4VP和Phen都对Eu(Ⅲ)离子的荧光强度起到了明显的增强作用;成功制备出尺寸可控的球形纳米胶束,通过调节纳米胶束的大小,使其应用于太阳能电池及其它光电光伏领域。
The morphology and fluorescence properties of rare earth complex nanomicelles formed by the non-ionic block copolymers containing a heterocyclic nitrogen heterocycle were investigated. Polystyrene-poly (4-vinylpyridine) (PS-b-P4VP) amphiphilic block copolymer was synthesized by reversible addition-fragmentation chain transfer (RAFT) As a synergistic reaction of small molecule ligands, coordination with Eu (Ⅲ) ions was induced to self-assemble into nanofibers with fluorescent polymer aggregates with core-shell structure. Ultraviolet-visible absorption spectra, transmission electron microscopy, Structure and fluorescence properties were characterized. The results showed that both PS-b-P4VP and Phen formed chelate bonds with Eu (Ⅲ) via nitrogen atom in the molecule, and participated in the coordination complexation in N, N-dimethylformamide solution to form aggregates. PS-b-P4VP and Phen all have a significant enhancement on the fluorescence intensity of Eu (Ⅲ) ions. The size-controlled spherical nanomicelles were successfully prepared, and the size of the nanomicelles was adjusted to be used in solar cells And other areas of photovoltaic photovoltaic.