水杨酸盐敏化BaF_2:Tb^(3+)纳米粒子中的Tb^(3+)离子发光（英文）  

Sensitized Luminescence of Terbium( Ⅲ) in BaF_2: Tb^(3+) Nanoparticles by Salicylate

作　　者：李素文[1] 张学伟[1] 姜义[1] 岳巾英[1] 贯丛[1] LI Suwen;ZHANG Xuewei;JIANG Yi;YUE Jinying;GUAN Cong(College of Science,Changchun Institute of Technology,Changchun 130012,China)

机构地区：[1]长春工程学院理学院,长春130012

出　　处：《应用化学》2018年第7期812-817,共6页Chinese Journal of Applied Chemistry

基　　金：Supported by the National Natural Science Foundation of China(No.11304021);the Undergraduate Innovation and Entrepreneurship Training Program of Jilin Province(No.201611437001)~~

摘　　要：采用水热法制备了均匀、单分散的BaF_2: Tb^(3+)纳米粒子,并采用离子交换法制备了水杨酸钠敏化的BaF2∶Tb3+纳米粒子(SS-BaF_2: Tb^(3+))。系统地研究了样品的结构、形貌和光致发光性质。结果表明,监测Tb^(3+)离子在547 nm的~5D_4→~7F_5跃迁,SS-BaF_2: Tb^(3+)纳米粒子获得了从200 nm到385 nm波长范围宽的激发带;激发SS的π-π*电子跃迁吸收,由于SS到Tb3+的能量传递("天线效应"),SS-BaF_2: Tb^(3+)纳米粒子产生了增强的Tb^(3+)离子绿光发射;敏化纳米粒子中Tb^(3+)离子光致发光寿命比未敏化纳米粒子中Tb3+离子寿命长。Uniform BaF2： Tb^3＋nanoparticles have been prepared by hydrothermal synthesis,and sodium salicylate（ SS） sensitized BaF2： Tb^3＋（ SS-BaF2： Tb^3＋） nanoparticles have been prepared by the ion exchange technique. Their structures,morphologies and photoluminescence properties were studied. A broad excitation band from 200 to 385 nm by monitoring ^5 D4→^7 F5 transition of Tb^3＋ at 547 nm in SS-BaF2： Tb^3＋nanoparticles was detected. Under excitation of the π-π＊electron transition absorption of salicylate,enhanced green emission of Tb^3＋ions in SS-BaF2：Tb^3＋ nanoparticles was observed due to the energy transfer from SS to Tb^3＋ ions by ＂antenna effect ＂. The photoluminescence lifetimes of Tb^3＋ions in SS sensitized nanoparticles were found to be longer than those in un-sensitized nanoparticles.

关 键 词：敏化 纳米粒子 能量传递 光致发光性质 

分 类 号：O614[理学—无机化学]