机构地区: 北京师范大学
出 处: 《北京师范大学学报(自然科学版)》 2011年第5期482-484,共3页
摘 要: 通过均匀沉淀法制备了硝酸根型层状铕氢氧化物(NO3--LEuH),采用离子交换法将层间阴离子NO3-交换为苯丙氨酸(PHE),得到了PHE/LRH复合体,并研究了其荧光性质.前躯体和复合体均有Eu3+的5 D0-7FJ跃迁发射峰,在室温下发射出Eu3+的特征红光,发射光谱峰位基本一致,但与NO3--LEuH相比,PHE/LRH复合体的发射峰强度大大减弱,表明将PHE引入LEuH层间对Eu3+的荧光有猝灭作用. Synthesis of a new series of layered hydroxides through homogeneous precipitation was reported.NO-_3 was exchanged with phenlylalanine(PHE) at ambient temperature,forming PHE/LRH composites.Photolumine-scence studies showed that both NO_3-LEuH precursor and composite PHE/LEuH displayed typical Eu3+emission.Compared with NO_3-LEuH precursor,fluorescence intensity of PHE/LRH composites was drastically decreased suggesting that incorporation of phenlylalanine and layer quenched sharply Eu3+ luminescence.