114991-72-9Relevant articles and documents
A highly selective fluorescent chemosensor for iron ion based on 1H-imidazo [4,5-b] phenazine derivative
Gao, Guo-Ying,Qu, Wen-Juan,Shi, Bing-Bing,Zhang, Peng,Lin, Qi,Yao, Hong,Yang, Wen-Long,Zhang, You-Ming,Wei, Tai-Bao
, p. 514 - 519 (2014)
Two kinds of fluorescent sensors (S and S1) for Fe3+ bearing 1H-Imidazo [4,5-b] phenazine derivatives have been designed and synthesized. Between the two sensors, S showed excellent fluorescent specific selectivity and high sensitivity for Fe3+ in DMSO solution. The test strip based on S was fabricated, which could act as a convenient and efficient Fe3+ test kit. The recognition mechanism of the sensor toward Fe 3+ was evaluated by MS, IR and XRD. The detection limit of the sensor S towards Fe3+ is 4.8 × 10-6 M. And other cations, including Hg2+,Ag+, Ca2+, Cu2+, Co2+, Ni2+, Cd2+, Pb2+, Zn 2+, Cr3+, and Mg2+ had no influence on the probing behavior.
Tailoring an HSO4-anion hybrid receptor based on a phenazine derivative
Qi, Xiao-Ni,Dong, Hong-Qiang,Yang, Hai-Long,Qu, Wen-Juan,Zhang, You-Ming,Yao, Hong,Lin, Qi,Wei, Tai-Bao
, p. 1373 - 1381 (2020)
A catechol-functionalized phenazine imidazole (PD) was tailored with 2,3-diaminophenazine and 3,4-dihydroxy benzaldehyde, and it served as a hybrid acceptor for capturing HSO4- anions. The selectivity and sensitivity of the PD receptor for anion sensing were studied. It was found that the PD receptor could not only display a preferable sensitivity to HSO4- ions with a "turn-off"fluorescence response, but also have a strong anti-interference ability toward other common anions, especially basic anions such as CH3COO-, HPO42-, and H2PO4-. The anion recognition mechanism of PD towards HSO4- is based on multiple hydrogen bond interactions. Finally, the strips for anion detection were prepared, which were verified to be a convenient and high-efficiency test kit for detecting HSO4- ions with the naked eye.
Sensitive and Selective Fluorescent and Colorimetric Sensor for Ag+ Based on the Supramolecular Self-Assembly in Semi-Water
Wei, Taibao,Zhang, Haili,Li, Wenting,Qu, Wenjuan,Su, Junxia,Lin, Qi,Zhang, Youming,Yao, Hong
, p. 1311 - 1316 (2017)
Specific recognition of ultratrace levels of ions in semi-water using super-quicker methods is still a challenge for environmental monitoring. Herein we report a fluorescent and colormetric sensor (ZH) based on supramolecular self-assembly, whose structure was destroyed by the addition of ultratrace of silver ions. The process promoted either naked eye visible color changes or fluorescence intensity quenched in conjunction with a wide pH range. Systematic studies revealed very high selectivity (0.07 μmol/L) for silver ions, and other common cations, e.g., Hg2+, Cu2+, Cd2+, Pb2+ had nearly no influence on the sensing behavior. This sensor also served as a multiple use of component in sensing materials by addition of I? into the mixture of ZH and Ag+ (about 5 times). What's more, ZH containing filter paper emerged distinct color and fluorescence changes upon exposure to silver (Ag+), which could be used as a portable method to undertake field testing for Ag+.
Sensor molecule for identifying cyanide ions through colorimetric channel and fluorescent channel as well as preparation and application of sensor molecule
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Paragraph 0031, (2018/03/26)
The invention designs and synthesizes a sensor molecule 2-phenyl-1H-imidazole [4, 5-b] phenazine capable of detecting cyanide ions through a colorimetric channel and a fluorescent channel. According to the sensor molecule, firstly, a dimer is formed by an intermolecular hydrogen bond, and then, a supramolecular self-assembly system is formed between phenazine rings according to pi-pi stacking, sothat a host molecule solution is enabled to give out strong fluorescence; after CN- is added, a host has the proton removal action, so that the self-assembly system is crashed to cause fluorescence quenching, the CN- can be identified with high selectivity in a water-bearing medium, and the identification process is not interfered by other negative ions. Additionally, after the CN- is added at room temperature, the fluorescence intensity of the solution is quickly weakened (less than 3s), and the solution becomes jacinth, so that a good naked eye identification effect can be achieved. According to CN-test paper made by adopting the sensor molecule, the cyanide ions in an environmental system can be detected conveniently and fast.
