A novel dual-channel Schiff base fluorescent chemo-sensor for Zn2+ and Ca2+ recognition: Synthesis, mechanism and application

Zhao, Gang; Guo, Binyuan; Wei, Gang; Guang, Shanyi; Gu, Zhengye; Xu, Hongyao

doi:10.1016/j.dyepig.2019.107614

Cited by 23 publications

(7 citation statements)

References 37 publications

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“…Apparently, the characteristic ES peak in 400–600 nm of pca – partly overlaps with the Eu 3+ EC peaks (Figure S12), manifesting that the characteristic ES of pca – can be reabsorbed by Eu 3+ in 6 and thus leading to the ES enhancement. This understanding is supported by the theory that FL resonance ET can enhance the FL emission. − …”

Section: Resultsmentioning

confidence: 74%

Organic–Inorganic Two-Dimensional Hybrid Networks Constructed from Pyridine-4-Carboxylate-Decorated Organotin–Lanthanide Heterometallic Antimotungstates

Pang

Gong

et al. 2020

Inorg. Chem.

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Six organic−inorganic hybrid pyridine-4-carboxylate-decorated organotin (OT)−lanthanide (Ln) heterometallic antimotungstates 3+ (2), Pr 3+ (3), Nd 3+ (4), Sm 3+ (5), Eu 3+ (6); Hpca = isonicotinic acid] have been prepared with the help of the structuredirecting effect of the trivacant [B-α-SbW 9 O 33 ] 9− segment toward [(CH 3 ) 2 Sn] 2+ and Ln 3+ ions in an acidic water medium. The prominent architecture characteristic is that their structural units consist of a trivacant [B-β-SbW 9 O 33 ] 9− segment stabilized by three [Sn-(CH 3 ) 2 (H 2 O)] 2+ groups and a [Ln(H 2 O) 6 (pca)] 2+ cation, which are interconnected to propagate an intriguing two-dimensional (2D) network. For all we know, 1−6 stand for the first 2D OT−Ln heterometallic polyoxometalates. Furthermore, luminescence performances of solid-state 3−6 were deeply surveyed at ambient temperature. Energy migration from [B-β-SbW 9 O 33 ] 9− and pca − to Sm 3+ centers in 5 was also studied. Comparative studies demonstrate that the contribution of [B-β-SbW 9 O 33 ] 9− sensitizing the emission of Sm 3+ is prominently larger than that of pca − sensitizing the emission of Sm 3+ in the emission process of 5. Most interestingly, 6 as a fluorescence probe exhibits high selectability and sensitivity for recognizing Zn 2+ and Cu 2+ in water.

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Section: Resultsmentioning

confidence: 74%

Organic–Inorganic Two-Dimensional Hybrid Networks Constructed from Pyridine-4-Carboxylate-Decorated Organotin–Lanthanide Heterometallic Antimotungstates

Pang

Gong

et al. 2020

Inorg. Chem.

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“…The Schiff base is the most intelligent part of the bionanorobot, as it can detect and bind to zinc ions to remove them from the cells . Moreover, the Schiff base also works as a fluorescent probe, and it fluoresces after specifically recognizing Zn 2+ . The intelligent bionanorobot (PSHAC) was precisely synthesized using highly efficient optical control technology (Scheme , Experimental Section).…”

Section: Results and Discussionmentioning

confidence: 99%

Autonomous Bionanorobots via a Cage-Shaped Silsesquioxane Vehicle for In Vivo Heavy Metal Detoxification

Wei

Lin

et al. 2022

ACS Appl. Mater. Interfaces

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Nanorobots hold great promise for integrated drug delivery systems that are responsive to molecular triggers. Herein, we successfully developed an automatic smart bionanorobot that has transport capability and recognizes and removes zinc ions from poisoned cells based on nanoscale polyhedral oligomeric silsesquioxane molecules. This intelligent bionanorobot can easily move inside and outside the cell and find zinc ions owing to its highly selective recognition to zinc ions and high cell permeability, especially the well-combined high penetration and strong binding energy. More importantly, it was also found that this intelligent bionanorobot can restore round HeLa cells to a normal fusiform cell morphology following high-concentration zinc treatment and does not interfere with cell proliferation and division. It was also shown by in vivo experiments that the bionanorobot can inhibit persistent enlargement of the liver caused by zinc ion poisoning.

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“…There is considerable interest in developing fluorescent probes or chemical sensors for selective recognition of metal ions due to their practical applications in analytical chemistry, medicine, biology and the environment. [1][2][3][4][5][6][7][8][9][10] Fluorescent probes have become a tool of choice in the field of analytical chemistry due to their many practical application advantages, such as high sensitivity, simplicity, reproducibility, low cost, and real time rapid responses. [11][12][13][14][15][16][17] The signal of a fluorescent sensor is usually monitored as a change of its emission intensity, fluorescence lifetime, or a shift of emission wavelength.…”

Section: Introductionmentioning

confidence: 99%

A pyridine based Schiff base as a selective and sensitive fluorescent probe for cadmium ions with “turn-on” fluorescence responses

Yuan

et al. 2022

New J. Chem.

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A novel dual-channel Schiff base fluorescent chemo-sensor for Zn2+ and Ca2+ recognition: Synthesis, mechanism and application

Cited by 23 publications

References 37 publications

Organic–Inorganic Two-Dimensional Hybrid Networks Constructed from Pyridine-4-Carboxylate-Decorated Organotin–Lanthanide Heterometallic Antimotungstates

Organic–Inorganic Two-Dimensional Hybrid Networks Constructed from Pyridine-4-Carboxylate-Decorated Organotin–Lanthanide Heterometallic Antimotungstates

Autonomous Bionanorobots via a Cage-Shaped Silsesquioxane Vehicle for In Vivo Heavy Metal Detoxification

A pyridine based Schiff base as a selective and sensitive fluorescent probe for cadmium ions with “turn-on” fluorescence responses

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