Nucleotide-directed syntheses of gold nanohybrid systems with structure-dependent optical features: Selective fluorescence sensing of Fe3+ ions

Ungor, Ditta; Csapó, Edit; Kismárton, Barbara; Juhász, Ádám; Dékány, Imre

doi:10.1016/j.colsurfb.2017.04.013

Cited by 27 publications

(16 citation statements)

References 45 publications

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“…Nowadays, the practical one-step “green” preparation protocols of several water-soluble Au NPs/NCs are extremely preferred [21,28,29,30]. During these processes, mainly the template-assisted preparation approaches are used, where dominant amines, like simple amino acids [31], peptides or proteins [32,33], dendrimers [34,35], and nucleotides [36,37,38,39], are applied, which have simultaneously a dual role as reducing and stabilizing ligand. The amines are a crucial class of the possible reducing agents, because they can be found in biological and chemical atmospheres.…”

Section: Introductionmentioning

confidence: 99%

Reduction of Tetrachloroaurate(III) Ions With Bioligands: Role of the Thiol and Amine Functional Groups on the Structure and Optical Features of Gold Nanohybrid Systems

2019

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In this review, the presentation of the synthetic routes of plasmonic gold nanoparticles (Au NPs), fluorescent gold nanoclusters (Au NCs), as well as self-assembled Au-containing thiolated coordination polymers (Au CPs) was highlighted. We exclusively emphasize the gold products that are synthesized by the spontaneous interaction of tetrachloroaurate(III) ions (AuCl4¯) with bioligands using amine and thiolate derivatives, including mainly amino acids. The dominant role of the nature of the applied reducing molecules as well as the experimental conditions (concentration of the precursor metal ion, molar ratio of the AuCl4¯ ions and biomolecules; pH, temperature, etc.) of the syntheses on the size and structure-dependent optical properties of these gold nanohybrid materials have been summarized. While using the same reducing and stabilizing biomolecules, the main differences on the preparation conditions of Au NPs, Au NCs, and Au CPs have been interpreted and the reducing capabilities of various amino acids and thiolates have been compared. Moreover, various fabrication routes of thiol-stabilized plasmonic Au NPs, as well as fluorescent Au NCs and self-assembled Au CPs have been presented via the formation of –(Au(I)-SR)n– periodic structures as intermediates.

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Section: Introductionmentioning

confidence: 99%

Reduction of Tetrachloroaurate(III) Ions With Bioligands: Role of the Thiol and Amine Functional Groups on the Structure and Optical Features of Gold Nanohybrid Systems

2019

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“…Nucleotide-stabilized blue-emitting Au nanoclusters [1] The one-step syntheses of both adenosine monophosphate (AMP) nucleotide-stabilized plasmonic gold nanoparticles (AMP-Au NPs) and fluorescent gold nanoclusters (AMP-Au NCs) were demonstrated. The dominant role of AMP:AuCl4 diverse Au products was the first time proven.…”

Section: Noble Metal Nanoparticles Vs Nanoclustersmentioning

confidence: 99%

BS6.2 - Biocompatible Gold Nanoclusters as Turn-off Biosensors

Ungor¹,

Dékány²,

Csapó³

2018

Proceedings IMCS 2018

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“…Au/nucleotide complexes have also been used for sensing applications. For example, Ungor and co‐workers utilized citrate‐reduced Au/AMP complexes to detect Fe 3+ . Significant quenching of the Au/AMP fluorescence was observed with the addition of Fe 3+ , and the detection limit was 2 μ m Fe 3+ .…”

Section: Applications Of Nucleotide‐containing Cpsmentioning

confidence: 99%

“…This method was then employed to prepare gold nanoclusters for various applications,a nd further investigationsh ave been made to determine their formation mechanisms by other groups. [53][54][55][56] Apart from adenine, Jiang et al utilized as imilar reduction method to make fluorescent Au/cytidine CPs. [57,58] Different emission intensities were found depending on the pH and reactiont ime of the synthesis.…”

Section: Complexinggold In the Presence Of Reducing Agentsmentioning

confidence: 99%

Self‐Assembly of Nucleobase, Nucleoside and Nucleotide Coordination Polymers: From Synthesis to Applications

Lopez

Liu

2017

ChemNanoMat

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With multiple metal binding sites, nucleobases, nucleosides, and nucleotides form various coordination polymers (CPs) with metal ions. These self-assembled materials are very interesting for their simplicity to prepare, highly tunable structure and properties, and excellent biocompatibility.P olymerization is achieved under ambient conditions without the need of free radical initiators or UV light. Different nucleobases have different metal-binding preferences, but in general most of their coordinations ites prefer borderline or soft metals, while the phosphate groups in the nucleotides prefer hard Lewis acids. In this Focus Review,r ecent developments in this fielda re summarized startingf rom the synthesis and characterization of these CPs. Various metal ions includingg old, silver,l anthanides, zinc, copper, and iron are individually reviewed, and each metal brings its own property into the CP materials.While mostoft hese materials are non-crystalline nanoparticles, under certainc onditions crystalline metal-organic frameworks (MOFs) andh ydrogels can also be prepared. The applicationso fs uch CPs are then described including enzyme entrapment,d rug loading and delivery, biosensor development, catalysis, coating of nanoparticles, and luminescence. Finally,f uture research opportunities of this field are discussed.

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Nucleotide-directed syntheses of gold nanohybrid systems with structure-dependent optical features: Selective fluorescence sensing of Fe3+ ions

Cited by 27 publications

References 45 publications

Reduction of Tetrachloroaurate(III) Ions With Bioligands: Role of the Thiol and Amine Functional Groups on the Structure and Optical Features of Gold Nanohybrid Systems

Reduction of Tetrachloroaurate(III) Ions With Bioligands: Role of the Thiol and Amine Functional Groups on the Structure and Optical Features of Gold Nanohybrid Systems

BS6.2 - Biocompatible Gold Nanoclusters as Turn-off Biosensors

Self‐Assembly of Nucleobase, Nucleoside and Nucleotide Coordination Polymers: From Synthesis to Applications

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