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A Near-Infrared Fluorescent Probe for Recognition of Hypochlorite Anions Based on Dicyanoisophorone Skeleton.
Molecules
January 2023
School of Life Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China.
A novel near-infrared (NIR) fluorescent probe () was designed and synthesized for the detection of hypochlorite anion (ClO) using a diaminomaleonitrile group as the recognition site. had large Stokes shift (237 nm) and showed an excellent NIR fluorescence response to ClO with the color change under the visible light. It showed a low detection limit (24.
View Article and Find Full Text PDFNear-infrared fluorescent chemodosimeter for real-time in vivo evaluation of HS-release efficiency of prodrug.
Chem Commun (Camb)
July 2020
School of Engineering, China Pharmaceutical University, 211198, P. R. China.
Hydrogen sulfide (H2S) is a significant gasotransmitter. A deficiency in H2S might contribute to some serious diseases. The development of H2S drugs has received a great deal of attention.
View Article and Find Full Text PDFReversible Ratiometric Fluorescent Probe for Sensing Bisulfate/HO and Its Application in Zebrafish.
Anal Chem
August 2017
Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Key Laboratory of Materials for Energy Conversion and Storage of Shanxi Province, Institute of Molecular Science, Shanxi University, Taiyuan 030006, China.
Herein, a novel near-infrared fluorescent probe for ratiometric detection of bisulfate was designed and developed based on a conjugation of naphthopyran-benzothiazolium system. The sensor showed excellent selectivity, high sensitivity and a rapid response toward bisulfite in aqueous solution. Upon the addition of HSO, the sensor displayed 37-fold (I/I) fluorescence intensity enhancement, accompanied by an apparent color change from violet to colorless, suggesting that the sensor can be used to detect HSO with "naked-eye".
View Article and Find Full Text PDFA near-Infrared Fluorescent Chemodosimeter for Ratiometric Detecting Fluoride Based on Desilylation Reaction.
J Fluoresc
September 2016
College of Sciences, Henan Agricultural University, Zhengzhou, 450002, People's Republic of China.
A new chemodosimeter based on dicyanomethylene-4H-chromene chromophore (probe 1) was developed as a ratiometric fluorescent probe in near-infrared range for F(-) with good selectivity in acetonitrile. Probe 1 could be used to directly visualize F(-) by the naked eye and showed more than 621-fold fluorescence enhancement at 715 nm upon reaction with F(-) upon excitation at 625 nm. The recognition of probe 1 to fluoride was featured by F(-)-induced red-shifts of both absorption (185 nm) and fluorescence peaks (132 nm) based on internal charge transfer (ICT) in acetonitrile.
View Article and Find Full Text PDFColorimetric and ratiometric near-infrared fluorescent cyanide chemodosimeter based on phenazine derivatives.
ACS Appl Mater Interfaces
February 2013
Laboratory for Advanced Materials and Institute of Fine Chemicals, East China University of Science and Technology, Shanghai 200237, People's Republic of China.
Two new near-infrared chemodosimeters for cyanide anion based on 5,10-dihexyl-5,10-dihydrophenazine were designed and synthesized. With dicyano-vinyl groups as the recognition site and electron-withdrawing groups on both sides, probe 1 exhibited an intramolecular charge transfer (ICT) absorption band at 545 nm and emission band at 730 nm, respectively, and thus showed an ICT block process and realized an "on-off" response after bilateral reaction with cyanide anions in CH₃CN. Probe 2 utilized an unreactive formyl group instead of one of the two reactive dicyano-vinyl groups as the electron-withdrawing component.
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