Periodic mesoporous organosilica based sensor for broad range mercury detection by simultaneous downshifting/upconversion luminescence

被引：5
|
作者：
Liu, Chunhui [1 ,2 ,3 ]
Kaczmarek, Anna M. [3 ]
Jena, Himanshu Sekhar [1 ]
Yang, Zetian [2 ]
Poelman, Dirk [2 ]
van der Voort, Pascal [1 ]
机构：
[1] Univ Ghent, COMOC Ctr Ordered Mat Organometall & Catalysis, Dept Chem, Krijgslaan 281 S3, B-9000 Ghent, Belgium
[2] Univ Ghent, Dept Solid State Sci, Lumilab, Krijgslaan 281 S1, B-9000 Ghent, Belgium
[3] Univ Ghent, Dept Chem, NanoSensing Grp, Krijgslaan 281 S3, B-9000 Ghent, Belgium
来源：
JOURNAL OF MATERIALS CHEMISTRY C | 2023年 / 11卷 / 17期
关键词：
HIGHLY SENSITIVE DETECTION; PB2+ IONS; LANTHANIDE; FLUORESCENCE; HG2+; NANOPARTICLES; SPECTROSCOPY; PROBE; FE3+; GEL;
D O I：
10.1039/d3tc00435j
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Recent research in lanthanide materials has strongly contributed to the development of high-performance chemical sensors. However, the current reported high-responsive chemical sensors still have a limited detection range, restraining their further application. We developed lanthanide-based periodic mesoporous organosilica (LnPMO) hollow spheres with interior lanthanide-doped fluorides for luminescence turn-off sensing of Hg2+ with a low detection limit and wide detection range. This yolk-shell structure was built of Tb3+ grafted diureido-benzoicacid PMO (shell) and lanthanide-doped fluoride NaYF4:Yb,Er (yolk), exhibiting both downshifting (DS) and upconversion (UC) luminescence. Visible photoluminescence properties of the developed hybrid material were studied using UV and near-infrared (NIR) excitation. In DS mode, benzoic acid-functionalized PMO acts as an organic co-sensitizer for Tb3+ beta-diketonate complexes, which can significantly enhance the ion sensing and detection range. In UC mode, Hg2+-responsive rhodamine B thiolactone (RBT) was used as an antenna species for the lanthanide-doped fluorides to sense Hg2+ with high sensitivity.
引用
收藏
页码：5634 / 5645
页数：13
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