A stable dual-emitting dye@LMOF luminescence probe for the rapid and visible detection of organophosphorous pesticides in aqueous media

CrystEngComm ◽  
2020 ◽  
Vol 22 (6) ◽  
pp. 1050-1056 ◽  
Author(s):  
Jie Zhang ◽  
Wendi Zhou ◽  
Lijun Zhai ◽  
Xiaoyan Niu ◽  
Tuoping Hu
Keyword(s):  
Aqueous Media ◽  
Selective Recognition ◽  
Organophosphorous Pesticides ◽  
Recognition Ability

The composite RhB@LMOF 1 was synthesized and exhibited sensitive and selective recognition ability for the detection of organophosphorous (OPs) pesticides in aqueous media.

scholarly journals Solid-Phase Extraction of Catechins from Green Tea with Deep Eutectic Solvent Immobilized Magnetic Molybdenum Disulfide Molecularly Imprinted Polymer

Molecules ◽  
2020 ◽  
Vol 25 (2) ◽  
pp. 280 ◽  
Author(s):  
Wanwan Ma ◽  
Kyung Ho Row
Keyword(s):  
Solid Phase Extraction ◽  
Green Tea ◽  
Solid Phase ◽  
Deep Eutectic Solvent ◽  
Epigallocatechin Gallate ◽  
Selective Recognition ◽  
Phase Extraction ◽  
Imprinted Polymer ◽  
Recognition Ability ◽  
Structural Analogues

A type of molecular-imprinted polymer with magnetic molybdenum disulfide as a base and deep eutectic solvent as a functional monomer (Fe3O4@MoS2@DES-MIP) was prepared with surface molecular imprinting method. It was applied as the adsorbent for the selective recognition and separation of (+)-catechin, (−)-epicatechin, (−)-epigallocatechin, (−)-epicatechin gallate, and (−)-epigallocatechin gallate in green tea in the process of magnetic solid-phase extraction (MSPE) combined with high-performance liquid chromatography (HPLC). The structure of Fe3O4@MoS2@DES-MIP was characterized by Fourier transform infrared spectroscopy and field emission scanning electron microscopy. The adsorption properties and selective recognition ability on (−)-epigallocatechin gallate and the other four structural analogues were examined and compared. The results show that the polymer has excellent selective recognition ability for (−)-epigallocatechin gallate, and its adsorption capacity was much higher than that of structural analogues. The Fe3O4@MoS2@DES-MIP not only has the special recognition ability to template a molecule, but also can be separated by magnets with high separation efficiency and can be used in MSPE.

Removal of Rotenone from Contaminated Water Using Molecularly Imprinted Polymeric Microspheres

2011 ◽  
Vol 71-78 ◽  
pp. 1425-1428
Author(s):  
Kai Cheng Zhang ◽  
Si Ying Zhao ◽  
Ming Yang
Keyword(s):  
Removal Efficiency ◽  
New Method ◽  
Selective Recognition ◽  
Contaminated Water ◽  
Polymeric Microspheres ◽  
Molecularly Imprinted ◽  
Recognition Ability ◽  
Polymerization Method

A new method of removing rotenone from contaminated water using molecularly imprinted polymeric microspheres (MIPMs) is described. The MIPMs were prepared by the emulsifier-free polymerization method. The removal efficiency and selective recognition ability of the MIPMs were studied. The highest removal efficiency was observed at pH = 8. Moreover, the MIPMs can be re-used for at least 10 times without losing any removal efficiency. The MIPMs provided a selective, simple, reliable and practicable solution to remove rotenone from contaminated water.

A new coumarin based chromo-fluorogenic probe for selective recognition of cyanide ions in an aqueous medium

RSC Advances ◽  
2015 ◽  
Vol 5 (117) ◽  
pp. 96905-96910 ◽  
Author(s):  
Xueyi Sun ◽  
Yu Wang ◽  
Xiaofeng Zhang ◽  
Shihong Zhang ◽  
Zhao Zhang
Keyword(s):  
Charge Transfer ◽  
Aqueous Medium ◽  
Fluorescent Probe ◽  
Intramolecular Charge Transfer ◽  
Aqueous Media ◽  
Selective Recognition ◽  
Fluorogenic Probe ◽  
Optical Behavior

The optical behavior of a simple intramolecular charge transfer (ICT) fluorescent probe, a coumarin-nitrobenzene conjugate (CNB), has been described to detect cyanide (CN−) selectively in buffered aqueous media.

scholarly journals Preparation of anthracene-based tetra-perimidine hexafluorophosphate and selective recognition for chromium(III) ion

2019 ◽  
Author(s):  
Qing-Xiang Liu ◽  
Shao-Cong Yu ◽  
Zhi-Xiang Zhao ◽  
Feng Yang ◽  
Yue Ding
Keyword(s):  
1H Nmr ◽  
13C Nmr ◽  
Selective Recognition ◽  
1H And 13C Nmr ◽  
X Ray ◽  
Recognition Ability

A novel anthracene-based tetra-perimidine hexafluorophosphate, 9,10-di{bi[2’-(N-ethylperimidinyl)ethyl]aminomethyl}anthracene PF6- (3) was prepared, and its structure was determined through X-ray analysis, 1H and 13C NMR. There are two soft (N-ethylperimidinylCH2CH2)2NCH2- moities on 9,10-locations of anthracene in the cationic part of 3. Compound 3 was used as a chemosensor to research the recognition ability for Cr3+ by fluorescence and UV titrations, IR, 1H NMR and HRMS. The results indicate that 3 is an effective chemosensor for Cr3+.

scholarly journals Synthesis of per(5-N-carboxamide-5-dehydroxylmethyl)-β-cyclodextrins and their selective recognition ability utilizing multiple hydrogen bonds

2019 ◽  
Vol 55 (27) ◽  
pp. 3872-3875 ◽  
Author(s):  
Takashi Nakamura ◽  
Sota Yonemura ◽  
Tatsuya Nabeshima
Keyword(s):  
Hydrogen Bonds ◽  
Functional Groups ◽  
Anion Recognition ◽  
Binding Mode ◽  
Selective Recognition ◽  
Recognition Ability ◽  
Multiple Hydrogen Bonds

An amide cyclodextrin with anion recognition ability exhibits unique binding mode in which unsymmetrically arranged functional groups play distinctive roles.

A chiroptical nanoprobe for highly selective recognition of histidine enantiomers in aqueous media

2019 ◽  
Vol 284 ◽  
pp. 55-62 ◽  
Author(s):  
Keyuan Liu ◽  
Ganhong Du ◽  
Long Ye ◽  
Liming Jiang
Keyword(s):  
Aqueous Media ◽  
Selective Recognition
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