One-Pot Synthesis of Nucleoside-Templated Fluorescent Silver Nanoparticles and Gold Nanoparticles

Nie, Furong; Ga, Lu; Ai, Jun

doi:10.1021/acsomega.9b00701

Cited by 10 publications

(5 citation statements)

References 32 publications

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“…It has been found that the process is sensitive to the mixture stoichiometry, the order of mixing, and even UV illumination during the synthesis. Similar fluorescent AuNCs have been obtained in the presence of other nucleotides with ascorbic acid as a reducing agent [13]. Moreover, nucleotide-assisted synthesis can be used to better understand the mechanism of AuNC formation in the presence of DNA molecules without any external reducing agent, as recently reported in [14].…”

Section: Introductionsupporting

confidence: 61%

Gold Nanoclusters Prepared in the Presence of Adenosine Monophosphate and Citrate: Factorial-Based Synthesis Optimization and Sensing Properties

Karpushkin,

Mesnyankina,

Sergeyev

2023

Analytica

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Gold nanoclusters are peculiar objects promising in view of qualitative and quantitative determination of various species, including heavy metal ions and biological molecules. We have recently discovered that introducing sodium azide in the reaction mixture during gold nanocluster synthesis in the presence of citrate and adenosine monophosphate can tune the product emission from blue to yellow. Taking advantage of the factorial design of the experiment, we have optimized the synthesis conditions to obtain pure blue and yellow emitters and investigate their sensitivity to a series of inorganic salts. The experiments have revealed selective quenching of the nanocluster’s fluorescence in the presence of mercury(II) ions.

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Section: Introductionsupporting

confidence: 61%

Gold Nanoclusters Prepared in the Presence of Adenosine Monophosphate and Citrate: Factorial-Based Synthesis Optimization and Sensing Properties

Karpushkin,

Mesnyankina,

Sergeyev

2023

Analytica

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“…The characteristic peaks around 1394 and 1591 cm –1 are for the symmetric and antisymmetric stretching of COO – in Na-Cit. These peaks were observed in the Fe 3 O 4 NPs with a slight shift, which indicated the presence of Na-Cit on the surface of Fe 3 O 4 NPs . The attachment of Na-Cit on the surface of Fe 3 O 4 NPs prevents the aggregation of NPs, ensuring good dispersibility of the NPs in water.…”

Section: Results and Discussionmentioning

confidence: 97%

Encapsulating Fe₃O₄ Nanoparticles and Carbon Dots in a Metal–Organic Framework for Magnetic Fluorescent Taggants

Li,

Wang,

Fang

2024

ACS Appl. Mater. Interfaces

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Magnetic fluorescent composite nanomaterials have broad application prospects in the fields of biological imaging, anticounterfeiting identification, suspicious object tracking, and identification of latent fingerprints in forensic medicine. For an effective taggant, a clearly visible identifying mark is necessary to enable observers to capture labeling information quickly and accurately, even from a distance. The preparation method of magnetic fluorescent composite materials is complicated and usually needs different surface modification and assembly processes. The limited loading capacity of fluorescent materials also limits the fluorescence properties of the composite, so it is difficult to produce obvious fluorescence as a taggant to meet the requirements of visible labeling. In this study, a core−shell structure of a magnetic fluorescent composite was prepared by using the metal−organic framework ZIF-8 as the host of fluorescent materials and an encapsulation shell coated on the Fe 3 O 4 nanoparticles. The porous ZIF-8 is beneficial for increasing the loading capacity of fluorescent materials to ensure the fluorescence performance of the composite materials. Further modification of the composite surface prevented the desorption of fluorescent materials from the pores of ZIF-8, enabling the samples to maintain good fluorescence properties even after multiple washing cycles. The preparation method is simple, rapid, and cost-effective, and the prepared magnetic fluorescent composite nanomaterial has high magnetic separation performance and fluorescence performance, making it a promising material for identification, marking, and tracking.

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“…It is well-known that classical gold (Au), copper (Cu) and silver (Ag) nanoparticles (NPs) show localized surface plasmon resonance (LSPR) in the nanometer range size, which can be identified as a characteristic band in UV-visible spectra [ 2 , 3 ]. For synthesis, several approaches can be found in the literature [ 4 ], but over the last few years, green chemistry methods [ 5 , 6 , 7 ] have become of interest considering the possible biomedical applications of these nanostructures [ 8 , 9 ]. In these procedures, mild conditions are used to produce biocompatible and stable colloidal systems.…”

Section: Introductionmentioning

confidence: 99%

Fluorescence Quenching of Tyrosine-Ag Nanoclusters by Metal Ions: Analytical and Physicochemical Assessment

Ungor

Bélteki

Horváth

et al. 2022

IJMS

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A new synthesis method is described for the first time to produce silver nanoclusters (AgNCs) by using the tyrosine (Tyr) amino acid. Several important parameters (e.g., molar ratios, initial pH, reaction time etc.) were optimized to reach the highest yield. The formed Tyr-AgNCs show characteristic blue emission at λem = 410 nm, and two dominant fluorescence lifetime components were deconvoluted (τ1 ~ 3.7 and τ2 ~ 4.9 ns). The NCs contained metallic cores stabilized by dityrosine. For possible application, the interactions with several metal ions from the tap water and wastewater were investigated. Among the studied cations, four different ions (Cu2+, Ni2+, Fe3+, and Rh3+) had a dominant effect on the fluorescence of NCs. Based on the detected quenching processes, the limit of detection of the metal ions was determined. Static quenching (formation of a non-luminescent complex) was observed in all cases by temperature-dependent measurements. The calculated thermodynamic parameters showed that the interactions are spontaneous ranked in the following order of strength: Cu2+ > Fe3+ > Rh3+ > Ni2+. Based on the sign and relations of the standard enthalpy (ΔH°) and entropy changes (ΔS°), the dominant forces were also identified.

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One-Pot Synthesis of Nucleoside-Templated Fluorescent Silver Nanoparticles and Gold Nanoparticles

Cited by 10 publications

References 32 publications

Gold Nanoclusters Prepared in the Presence of Adenosine Monophosphate and Citrate: Factorial-Based Synthesis Optimization and Sensing Properties

Gold Nanoclusters Prepared in the Presence of Adenosine Monophosphate and Citrate: Factorial-Based Synthesis Optimization and Sensing Properties

Encapsulating Fe₃O₄ Nanoparticles and Carbon Dots in a Metal–Organic Framework for Magnetic Fluorescent Taggants

Fluorescence Quenching of Tyrosine-Ag Nanoclusters by Metal Ions: Analytical and Physicochemical Assessment

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One-Pot Synthesis of Nucleoside-Templated Fluorescent Silver Nanoparticles and Gold Nanoparticles

Cited by 10 publications

References 32 publications

Gold Nanoclusters Prepared in the Presence of Adenosine Monophosphate and Citrate: Factorial-Based Synthesis Optimization and Sensing Properties

Gold Nanoclusters Prepared in the Presence of Adenosine Monophosphate and Citrate: Factorial-Based Synthesis Optimization and Sensing Properties

Encapsulating Fe3O4 Nanoparticles and Carbon Dots in a Metal–Organic Framework for Magnetic Fluorescent Taggants

Fluorescence Quenching of Tyrosine-Ag Nanoclusters by Metal Ions: Analytical and Physicochemical Assessment

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Encapsulating Fe₃O₄ Nanoparticles and Carbon Dots in a Metal–Organic Framework for Magnetic Fluorescent Taggants