Selective sensing of nitric oxide by a 9,10-phenanthroquinone–pyridoxal based fluorophore

Maiti, Debjani; Islam, Abu Saleh Musha; Sasmal, Mihir; Prodhan, Chandraday; Ali, Mahammad

doi:10.1039/c8pp00115d

Cited by 19 publications

(12 citation statements)

References 28 publications

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“…The transition of electrons was also forbidden. [ 16 ] The excellent emissions in both the blue and red channels made SiORed‐7 a desired candidate for fabricating ratiometric fluorescent probe. The fluorescence of SiORed‐7 was studied over a wide range of pH from 3.0 to 10.0 (Figure S24, Supporting Information).…”

Section: Resultsmentioning

confidence: 99%

“…Therefore, the dual‐emission property of SiORed‐7 may render it as a powerful new platform for the construction of ratiometric probes ( Scheme ). Moreover, NO could directly react with the piperazidine NH group to generate the NNO moiety acting as an electron withdrawing group (Scheme 1( 1 ) [ 16 ] As a result, the fluorescence may dramatically redshift through the alteration of the aggregation patterns. Furthermore, the piperazidine moiety is a lysosomal targeting group and should be reserved in the probe (Scheme 1(2)).…”

Section: Introductionmentioning

confidence: 99%

“…To fill the blank of the unconventional fluorescence in the field of the fluorescent probes, we aimed to provide a novel strategy based on discovering an optically tunable an electron withdrawing group (Scheme 1(1) [16] As a result, the fluorescence may dramatically redshift through the alteration of the aggregation patterns. Furthermore, the piperazidine moiety is a lysosomal targeting group and should be reserved in the probe (Scheme 1 (2)).…”

Section: Introductionmentioning

confidence: 99%

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Robust Organoalkoxysilanes as Red Unconventional Fluorescent Platform

Zuo

Yang

Gou

et al. 2020

Adv Funct Materials

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Unconventional fluorescent materials have attracted intense and continuous attention due to the facile processability, excellent biocompatibility, and high availability. However, for the lack of suitable unconventional fluorescent platform, unconventional luminophore‐based fluorescent probes have not been applied in the biological field, especially in the detection of bioactive molecules. In this work, unconventional red fluorescence is observed from a series of organoalkoxysilanes for the first time. Particularly, the unique fluorescence derived from smart Si–O bridged structures prompt the fluorescent probe design strategy. The strategy involves applying the Si–O bridge to provide desirable red unconventional fluorescence, and ratiometric detection of endogenous nitric oxide in lysosomes and in vivo. It is expected that this novel strategy will expand the applications of unconventional fluorescence to the bioimaging field, and further provide valid approach for the future evolution of unconventional fluorescent probes.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Robust Organoalkoxysilanes as Red Unconventional Fluorescent Platform

Zuo

Yang

Gou

et al. 2020

Adv Funct Materials

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“…The following equation was used to calculate the fluorescence quantum yield of the chemosensor and the metal-complex (37).…”

Section: Calculation Of the Chemosensor's Fluorescence Quantum Yield ...mentioning

confidence: 99%

Detection to trace aluminum ion of pharmaceutical wastewater using synthesis of Schiff-based chemosensor

Dagnaw

Gopal

2021

Environ Health Eng Manag

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Background: The aim of this research was to develop a fluorogenic sensor for Al3+ions, which have been identified as a possible food and drinking water pollutant by the WHO and considered to be harmful to human health. Methods: The sensing mechanism was based on excited-state intramolecular proton transfer, with the intramolecular rotation restriction occurring after binding with the analyte. The probe attaches Al3+selectively and emits strong emission in 4:1 H2 O/MeOH (v/v) solution while irradiated at 400 nm in the presence of a wide number of cations, acting as a "turn-on" fluorescence chemosensor. The range of detection for Al3+is 3.3 nM (3 method), which is more than 200 times more responsive than the WHO suggested limit of 7.4 mM (3σ method). Mass spectra, job plot, and Benesi-Hildebrand plot were used to determine the formation of the 1:1 metal-to-ligand complex. Results: Aluminum (Al) ion content in effluent obtained from the pharmaceutical sector is 0.381 mM, which is a trace amount. A separate in vitro experiment indicates that the probe can precisely perceive Al3+ions in a cell line. The sensor-based method is developed to detect 3.3 nM of Al3+ions, which is significantly less than the WHO max. Conclusion: The probe to detect Al3+ions in live cells. HL becomes a flexible sensor for recognizing intracellular Al3+in human liver cancer cell line Hep G2 and human lung fibroblast cell lines by fluorescence cell imaging procedures, and the probe’s non-toxicity has been proven by MTT tests up to 100M.

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“…Recently, imidazole compounds have attracted extensive attention due to their fascinating optical properties . The imidazole nucleus is a key building block that has been extensively used in anion sensors, ionic liquids, as well as electronic and optical materials .…”

Section: Introductionmentioning

confidence: 99%

Photochromic Properties of Novel One‐pot Multicomponent Synthesized Tetraarylimidazoles

et al. 2019

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Acetic acid mediated synthesis of novel tetraarylimidazoles derivatives has been reported via multicomponent reaction of benzil or phenanthrene‐9,10‐dione, NH4OAc, vanillin and aniline derivatives under microwave irradiation. Several novel tetraarylimidazole derivatives, phenanthroimidazole and bis‐tetraphenylimidazole bearing a 2‐methoxyphenol substituent at position 2 of imidazole ring were prepared. The advantages of this method are the one‐pot preparation of compounds, in short reaction times (4‐7 min) and good yields. All synthesized compounds with a 2‐methoxyphenol substituent at position 2 of imidazole ring exhibited good photochromic behavior. The photoisomerization can be performed from ground state to triplet excited state according to TD‐DFT calculation. The results showed that the presence of ortho‐methoxy substituent to hydroxyl substitution has the greatest effect on photochromic properties of target compounds. Furthermore, a pattern was successfully visualized upon UV light irradiation, which suggested that these compounds can be served as a security ink or an anti‐counterfeiting mark for photo printing.

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Selective sensing of nitric oxide by a 9,10-phenanthroquinone–pyridoxal based fluorophore

Cited by 19 publications

References 28 publications

Robust Organoalkoxysilanes as Red Unconventional Fluorescent Platform

Robust Organoalkoxysilanes as Red Unconventional Fluorescent Platform

Detection to trace aluminum ion of pharmaceutical wastewater using synthesis of Schiff-based chemosensor

Photochromic Properties of Novel One‐pot Multicomponent Synthesized Tetraarylimidazoles

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