摘要
本文采用水热法合成了NO-3型层状铕氢氧化物(NO3-LEuH),通过离子交换法将去质子的香豆素-3-羧酸和1-辛烷磺酸根离子引入前体LEuH的层间,改变香豆素-3-羧酸和1-辛烷磺酸钠的比例得到了一系列发光强度不同的复合体.采用X-射线粉末衍射仪(XRD),红外吸收光谱仪(IR),和荧光分光光度计(PL)等方法研究了其结构及性质,结果表明香豆素-3-羧酸的插入能有效敏化层板Eu3+的红光发射.
The NOa-type layered europium hydroxide (NOa-LEuH) was synthesized by hydrothermal method. The organic compounds of coumarin-3-carboxylic acid (C3C) deprotonated by NaOH and 1-octane sulfonic acid sodium (OS) were intercalated into gallery of LEuH via an ion exchange method. Different molar ratios of organic guests (C3C/OS) gave rise to composites with different emission intensity. The as-formed composites were characterized by XRD, FT-IR and PL. PL spectra indicate that organic sensitizer of C3C can markedly enhance red luminescence of layer Eu3+ ions due to efficient energy transfer between C3C and Eu3+ ions.
出处
《北京师范大学学报(自然科学版)》
CAS
CSCD
北大核心
2016年第4期440-444,共5页
Journal of Beijing Normal University(Natural Science)
基金
国家自然科学基金资助项目(21271028)