Schiff base capped gold nanoparticles for transition metal cation sensing in organic media

Čonková, Miroslava; Konopka, Marcin; Ciesielski, Artur; Samorı́, Paolo; Stefankiewicz, Artur R.

doi:10.1039/d2cc00497f

Cited by 14 publications

(7 citation statements)

References 42 publications

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“…The functionalization of 0DMs with appropriate (supra)molecular receptors can impart new physicochemical properties. [81,82] An excellent example of the fabrication of 0DM-based composites with cages is the work of Kang et al concerning the functionalization of mesoporous silica with a cavity size of ~6 nm and a pore entrance of ~2 nm (commercially available silica named SBA-16) with cuboctahedral MOC-1 synthesized from Cu(NO 3 ) 2 and the organic ligand 5-sulfonato-1,3-benzenedicarboxylate. [83] MOC-1 was successfully incorporated into the cavity of mesoporous silica using a double-solvent strategy.…”

Section: D Material-based Hybrids and Compositesmentioning

confidence: 99%

Dynamic Cages—Towards Nanostructured Smart Materials

2023

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The interest in capsular assemblies such as dynamic organic and coordination cages has blossomed over the last decade. Given their chemical and structural variability, these systems have found applications in diverse fields of research, including energy conversion and storage, catalysis, separation, molecular recognition, and live‐cell imaging. In the exploration of the potential of these discrete architectures, they are increasingly being employed in the formation of more complex systems and smart materials. This Review highlights the most promising pathways to overcome common drawbacks of cage systems (stability, recovery) and discusses the most promising strategies for their hybridization with systems featuring various dimensionalities. Following the description of the most recent advances in the fabrication of zero to three‐dimensional cage‐based systems, this Review will provide the reader with the structure‐dependent relationship between the employed cages and the properties of the materials.

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Section: D Material-based Hybrids and Compositesmentioning

confidence: 99%

Dynamic Cages—Towards Nanostructured Smart Materials

2023

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“…Schiff bases can be used to modify NPs by surface modification methods such as grafting and encapsulation, and a variety of ion sensors have been fabricated. ,− Actually, organic NPs of Schiff base complexes can also be directly prepared. − For instance, Singh et al synthesized a Schiff base based tripod receptor and obtained a zinc complex on this basis, which can be used for the detection of F – and HSO 4 – . The fluorescence peak at 422 nm was enhanced by the addition of F – because the cavity interaction of F – in the complex which resulted in the separation of two aromatic nitro rings and inhibited the photoinduced electron transfer (PET) effect.…”

Section: Chromogenic and Fluorogenic Chemosensorsmentioning

confidence: 99%

Schiff Base-Modified Nanomaterials for Ion Detection: A Review

Zhong

Shi

et al. 2022

ACS Appl. Nano Mater.

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Ion detection is crucial for environmental quality, human health, and industry development. Schiff bases and their complexes are widely applied as the probes for ion detection in chemistry, environment, and biology fields. There are many kinds of interesting Schiff bases and their coordination complexes that have been designed and synthesized based on the facile synthesis. Recently, Schiff base chemistry has intercrossed with nanomaterials toward wide applications. Nanomaterials are characterized by their sizes in the range of several nanometers to several hundreds of nanometers and then with large specific surface area. They have unusual properties such as mechanical property, optical property, and catalytic property, which are usually not active for their bulk materials. The development of new nanomaterials has dramatically increased in the past two decades, especially the hybridization of inorganic nanomaterials with organic functional species. Schiff base is a very famous class of organic molecules with diversity structures and properties. The remarkable point is that they are synthesized facilely. In this review, the principles and methods of Schiff base preparation have been scanned briefly. Then nanomaterials functionalized by Schiff base to achieve efficient, rapid, and sensitive recognition of ions were elaborated. The types of nanomaterials are included the metal–organic frameworks (MOFs) and covalent organic frameworks (COFs) constructed by Schiff base ligands with nanosized pores and surface modification of nanoparticles (NPs) with Schiff bases, which can not only retain the advantages of the original nanomaterials but also improve the ability of ion-specific recognition. The development of colorimetric, fluorescence, and electrochemical sensors based on Schiff base nanomaterials for ion detection in recent years was carefully summarized as well. It should be mentioned that the types of ions in this review are mainly metal ions. Finally, the challenges in the future in this field have been proposed.

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“…Up to date, gold nanoparticles (Au NPs) have been in use for a wide range of biomedical applications like drug delivery, disease treatment, optical imaging and catalysis owing to their physical and chemical properties. [1][2][3][4][5][6][7][8][9][10][11][12] In addition to that, Au NPs have been heavily incorporated to various sensing platform to colorimetrically detect a wide variety of targets including metal/nonmetals ions, [13][14][15][16] organic or biomolecules [17][18][19] and even virus, bacteria and also cancer cells [20][21][22][23][24][25][26] due its unique surface plasmon resonance (SPR) property. For instance, while the dispersed spherical Au NPs in solution gives wine-red color, when they are in close proximity each other, they are in tendency to aggregation and induce blue-purple color.…”

Section: Introductionmentioning

confidence: 99%

Development of a Colorimetric Urease Test Based on Au NPS Capped with Anthocyanin for the Rapid Detection of Helicobacter pylori through Multiple Readouts

Sezgin,

Tekin,

Calim

et al. 2023

ChemistrySelect

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In this work, we have reported use of anthocyanin capped gold nanoparticles (Ant@Au NPs)‐incorporated colorimetric urease test for rapid, sensitive and economic detection of Helicobacter pylori (H. pylori). This test containing Ant@Au NPs, urea, sodium phosphate buffer (PBS) and sodium azide (NaN3) was prepared at pH 5 with red solution owing to dispersity of Ant@Au NPs, urease enzyme secreted from H. pylori cause production of ammonia (NH3) via hydrolysis of urea, then which makes reaction environment alkaline (pH 8.2). The limit of detection for this Ant@Au NPs based urease test was determined to be to 102 CFU/mL with proportional to increasing incubation time. However, distinct color change was observed with 104 CFU/mL H. pylori suspensions in 15 min. The anthocyanin molecules existing on surface of Ant@Au NPs were easily deprotonated from hydroxyl groups in the alkaline condition, which caused various changes on Ant@Au NPs including quite much negative charges on the surface of Ant@Au NPs analyzed by Zeta potential, aggregation of Ant@Au NPs demonstrated by STEM, DLS and spectrophotometer, and turning the color of test solution to purple evaluated by a naked eye and digital process imaging system.

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Schiff base capped gold nanoparticles for transition metal cation sensing in organic media

Abstract: We report a fast and ultrasensitive colorimetric method for the detection of transition metal ions (Fe3+, Cu2+, Ni2+) in a mixture of toluene-acetonitrile using Schiff base functionalized gold nanoparticles. We...

Cited by 14 publications

References 42 publications

Dynamic Cages—Towards Nanostructured Smart Materials

Dynamic Cages—Towards Nanostructured Smart Materials

Schiff Base-Modified Nanomaterials for Ion Detection: A Review

Development of a Colorimetric Urease Test Based on Au NPS Capped with Anthocyanin for the Rapid Detection of Helicobacter pylori through Multiple Readouts

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