Modifying a composite based on silica molecular sieve and a Ru(II)-based probe with Fe3O4 particles: Construction and oxygen sensing performance

2016 ◽  
Vol 446 ◽  
pp. 24-31 ◽  
Author(s):  
Lin Chen ◽  
Shuai Sun ◽  
Jia Li ◽  
Zhigang Fang
Keyword(s):  
Molecular Sieve ◽  
Oxygen Sensing ◽  
Sensing Performance

Molecular Sieve Based on a PMMA/ZIF-8 Bilayer for a CO-Tolerable H2 Sensor with Superior Sensing Performance

2020 ◽  
Vol 12 (25) ◽  
pp. 28616-28623 ◽  
Author(s):  
Hyeonghun Kim ◽  
Woochul Kim ◽  
Sungjun Cho ◽  
Jiyoon Park ◽  
Gun Young Jung
Keyword(s):  
Molecular Sieve ◽  
H2 Sensor ◽  
Sensing Performance

Oxygen sensing performance of Nb-doped TiO2 thin film with porous structure

2014 ◽  
Vol 585 ◽  
pp. 729-733 ◽  
Author(s):  
Linhui Gan ◽  
Congcong Wu ◽  
Yuan Tan ◽  
Bo Chi ◽  
Jian Pu ◽  
...  
Keyword(s):  
Thin Film ◽  
Porous Structure ◽  
Tio2 Thin Film ◽  
Oxygen Sensing ◽  
Doped Tio2 ◽  
Sensing Performance

scholarly journals Comparison Between Binuclear and Mononuclear Ru(II) Complexes: Synthesis, Structure, Photophysics, and Oxygen Sensing Performance

2021 ◽  
Vol 9 ◽  
Author(s):  
Fei Wang ◽  
Liyuan Yang ◽  
Xue-Quan Xian
Keyword(s):  
Charge Transfer ◽  
Recovery Time ◽  
Oxygen Sensing ◽  
Performance Comparison ◽  
Collision Probability ◽  
Attractive Potential ◽  
Response Recovery ◽  
Ligand Charge Transfer ◽  
Diamine Ligands ◽  
Sensing Performance

Owing to their attractive potential in optoelectronic application, luminescent Ru(II) complexes with diamine ligands are harvesting more and more research efforts. These literature efforts, however, are mostly mononuclear ones, with no detailed discussion on the performance comparison between mononuclear and multinuclear Ru(II) complexes. This work synthesized three diamine ligands having two or multiple chelating sites in each ligand, as well as their Ru(II) complexes. The single-crystal structure, electronic structure, and photophysical parameters of these Ru(II) complexes were analyzed and compared. It was found that multinuclear Ru(II) complexes had a pure MLCT (metal-to-ligand charge transfer)–based emissive center, showing longer emission lifetime and higher emission quantum yield, which were desired for oxygen sensing. Then, the oxygen sensing performance of these mononuclear and multinuclear Ru(II) complexes was systematically compared by doping them into polymer fibers via electrospinning method. Improved oxygen sensing performance was observed from binuclear Ru(II)-doped nanofibrous samples, compared with the sensing performance of mononuclear ones, including higher sensitivity, shorter response/recovery time, and better photostability. The causation was attributed to the fact that the emissive state of multinuclear Ru(II) complexes was MLCT-based ones and thus more sensitive to O2 quenching than monocular Ru(II) complexes whose emissive state was a mixture of MLCT and LLCT (ligand-to-ligand charge transfer). In addition, a multinuclear Ru(II) complex had multiple emissive/sensing components, so that its sensing collision probability with O2 was increased, showing better photostability and shorter response/recovery time. The novelty of this work was the linear oxygen sensing curve, which was rarely reported in the previous work.

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