Synthesis, crystal structure and properties of rare earth metal-organic framework materials based on the 2,5-pyridinedicarboxylic acid ligands

2018 ◽  
Vol 666 (1) ◽  
pp. 109-118 ◽  
Author(s):  
Liu Zheng ◽  
Jiaxing Han ◽  
Haiying Li ◽  
Guo-Cheng Han ◽  
Zhengnan Guo ◽  
...  
Crystals ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 185
Author(s):  
Kai Song ◽  
Han Yu ◽  
Jingyi Zhang ◽  
Yumeng Bai ◽  
Yanjun Guan ◽  
...  

A rosebengal-modified nanoporous structure was designed and constructed. This composite structure consisted of an organic sensitizer based on rosebengal and a supporting host of rare earth metal-organic-framework (MOF). It was identified by means of its x-ray diffraction (XRD) pattern, Infrared (IR) spectra, thermal stability and photophysical measurements. Its absorption was increased by 2,4,6-trinitrophenol. Its rosebengal emission was proportionally increased. But its rare earth emission was well-preserved, offering ratiometric signals. These two sensing modes exhibited linear response and good selectivity with a limit of detection (LOD) of 1.9 μM. Its sensing nature was confirmed as the combination of increased rosebengal emission and rare earth emission quenching effect triggered electron-deficient molecules. This nanoporous structure was superior to traditional ones owing to its double sensing modes.


1989 ◽  
Vol 28 (5) ◽  
pp. 934-938 ◽  
Author(s):  
Rolf Dieter Hoffmann ◽  
Wolfgang Jeitschko ◽  
Manfred Reehuis ◽  
Stephen Lee

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