• 更多栏目

    刘颖雅

    • 副教授     博士生导师   硕士生导师
    • 性别:女
    • 毕业院校:中科院大连化学物理研究所
    • 学位:博士
    • 所在单位:化工学院
    • 学科:工业催化. 能源化工
    • 办公地点:化工实验楼B325
    • 联系方式:email:yingya.liu@dlut.edu.cn 0411-84986124
    • 电子邮箱:yingya.liu@dlut.edu.cn

    访问量:

    开通时间:..

    最后更新时间:..

    Developing Luminescent Ratiometric Thermometers Based on a Covalent Organic Framework (COF)

    点击次数:

    论文类型:期刊论文

    发表时间:2020-01-27

    发表刊物:ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

    收录刊物:PubMed、EI、SCIE

    卷号:59

    期号:5

    页面范围:1932-1940

    ISSN号:1433-7851

    关键字:Covalent Organic Frameworks; Lanthanides; Quenching; Ratiometric Thermometers; Sensors

    摘要:Covalent Organic Frameworks (COFs), an emerging class of crystalline porous materials, are proposed as a new type of support for grafting lanthanide ions (Ln(3+)) and employing these hybrid materials as ratiometric luminescent thermometers. ATpBpy-COF-prepared from 1,3,5-triformyl-phloroglucinol (Tp) and 2,2'-bipyridine-5,5'-diamine (Bpy) grafted with Eu/Tb and Dy acetylacetone (acac) complexes can be successfully used as a luminescent thermometer in the 10-360 K (Eu) and 280-440 K (Tb) ranges with good sensing properties (thermal sensitivity up to 1.403% K-1, temperature uncertainty delta T < 1 K above 110 K). For the Eu/Tb systems, we observe an unusual and rarely reported behavior, that is, no thermal quenching of the Tb3+ emission, a result of the absence of ion-to-ligand/host energy back-transfer. The LnCOF materials proposed here could be a new class of materials employed for temperature-sensing applications following up on the well-known luminescent metal-organic framework thermometers.