Resorcinarene-Embedded Stable Silver Nanoparticles: A Fluorescent Nanoprobe for Pb(II) in Water

Mishra, Divya

doi:10.22214/ijraset.2018.1205

Cited by 6 publications

(3 citation statements)

References 26 publications

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“…Resulting AgNPs (d = 5 ± 2 nm) have selectivity towards Cd 2+ . Substitution of eight methoxy groups in RA-6 with hydroxyl fragments in compound RA-7 switched AgNPs selectivity [110]. RA-7-AgNPs (d = 15 ± 5 nm) selective to Pb 2+ ions were obtained.…”

Section: Synthesis and Application Of Resorcin[4]arene-based Agnpsmentioning

confidence: 97%

The Role of Calix[n]arenes and Pillar[n]arenes in the Design of Silver Nanoparticles: Self-Assembly and Application

Padnya

Gorbachuk

Stoikov

2020

IJMS

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Silver nanoparticles (AgNPs) are an attractive alternative to plasmonic gold nanoparticles. The relative cheapness and redox stability determine the growing interest of researchers in obtaining selective plasmonic and electrochemical (bio)sensors based on silver nanoparticles. The controlled synthesis of metal nanoparticles of a defined morphology is a nontrivial task, important for such fields as biochemistry, catalysis, biosensors and microelectronics. Cyclophanes are well known for their great receptor properties and are of particular interest in the creation of metal nanoparticles due to a variety of cyclophane 3D structures and unique redox abilities. Silver ion-based supramolecular assemblies are attractive due to the possibility of reduction by “soft” reducing agents as well as being accessible precursors for silver nanoparticles of predefined morphology, which are promising for implementation in plasmonic sensors. For this purpose, the chemistry of cyclophanes offers a whole arsenal of approaches: exocyclic ion coordination, association, stabilization of the growth centers of metal nanoparticles, as well as in reduction of silver ions. Thus, this review presents the recent advances in the synthesis and stabilization of Ag (0) nanoparticles based on self-assembly of associates with Ag (I) ions with the participation of bulk platforms of cyclophanes (resorcin[4]arenes, (thia)calix[n]arenes, pillar[n]arenes).

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Section: Synthesis and Application Of Resorcin[4]arene-based Agnpsmentioning

confidence: 97%

The Role of Calix[n]arenes and Pillar[n]arenes in the Design of Silver Nanoparticles: Self-Assembly and Application

Padnya

Gorbachuk

Stoikov

2020

IJMS

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“…When the system is free from contaminant, after optical excitation, the emission intensity is weak, due to an electron transfer from the ionophore energy level to the excited fluorophore level that inhibits the radiative transition between the two states of the fluorophore moiety. During the contamination with metal cations, the probability of radiative transition is enhanced [ 44 , 45 ], caused by the inhibition of the electron transfer from the ionophore to the fluorophore, since the binding with the cation stabilizes the energy level of the ionophore (see Scheme 1 b). Other mechanisms causing an enhancement or quenching of the fluorescence intensity are chelation-enhanced fluorescence (CHEF) and chelating quenching fluorescence (CHQF) [ 46 , 47 , 48 ].…”

Section: Physical Aspects Behind Fluorescence Response To Environmmentioning

confidence: 99%

Metal Nanostructures for Environmental Pollutant Detection Based on Fluorescence

Burratti

Ciotta

et al. 2021

Nanomaterials

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Heavy metal ions and pesticides are extremely dangerous for human health and environment and an accurate detection is an essential step to monitor their levels in water. The standard and most used methods for detecting these pollutants are sophisticated and expensive analytical techniques. However, recent technological advancements have allowed the development of alternative techniques based on optical properties of noble metal nanomaterials, which provide many advantages such as ultrasensitive detection, fast turnover, simple protocols, in situ sampling, on-site capability and reduced cost. This paper provides a review of the most common photo-physical effects impact on the fluorescence of metal nanomaterials and how these processes can be exploited for the detection of pollutant species. The final aim is to provide readers with an updated guide on fluorescent metallic nano-systems used as optical sensors of heavy metal ions and pesticides in water.

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“…The chitin nanofiber sheet (CNFS) used in our study has a nanoscale fiber-like surface structure, with corresponding increases in the available surface area for adsorption of Ag NPs. In addition, the advantages, in terms of biochemical activities, of chitin/chitosan-based materials include anti-infectious activity, the stimulation of angiogenesis/wound repair, and the stabilization/activation of growth factors [110][111][112][113][114]. Recent studies show that the application of CNFS to skin improved the epithelial granular layer and increased granular density, suggesting the potential use of CNFS as a component of skin-protective formulations [31].…”

Section: Applications For Healthcare Workers (Hcws)mentioning

confidence: 99%

Silver Nano/Microparticles

2020

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Resorcinarene-Embedded Stable Silver Nanoparticles: A Fluorescent Nanoprobe for Pb(II) in Water

Cited by 6 publications

References 26 publications

The Role of Calix[n]arenes and Pillar[n]arenes in the Design of Silver Nanoparticles: Self-Assembly and Application

The Role of Calix[n]arenes and Pillar[n]arenes in the Design of Silver Nanoparticles: Self-Assembly and Application

Metal Nanostructures for Environmental Pollutant Detection Based on Fluorescence

Silver Nano/Microparticles

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