Chiral supramolecular nanoparticles: The study of chiral surface modification of silver nanoparticles by cysteine and its derivatives

Koktan, Jakub; Sedláčková, Helena; Osante, Iñaki; Cativiela, Carlos; Díaz, David Díaz; Řezanka, Pavel

doi:10.1016/j.colsurfa.2015.01.079

Cited by 15 publications

(12 citation statements)

References 38 publications

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“…They probed the adsorption of three different chiral compounds by means of SEROA. The spectra were used to determine the concentration of adsorbed molecules . Additionally, Ostovar Pour et al examined the protein‐ligand binding via SEROA spectra in the vicinity of a plasmon resonance from an achiral metallic nanostructure.…”

Section: Linear Chiroptical Effectsmentioning

confidence: 99%

Chirality and Chiroptical Effects in Metal Nanostructures: Fundamentals and Current Trends

Collins

Kuppe

Hooper

et al. 2017

Advanced Optical Materials

289

246

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Throughout the 19th and 20th century, chirality has mostly been associated with chemistry. However, while chirality can be very useful for understanding molecules, molecules are not well suited for understanding chirality. Indeed, the size of atoms, the length of molecular bonds and the orientations of orbitals cannot be varied at will. It is therefore difficult to study the emergence and evolution of chirality in molecules, as a function of geometrical parameters. By contrast, chiral metal nanostructures offer an unprecedented flexibility of design. Modern nanofabrication allows chiral metal nanoparticles to tune the geometric and optical chirality parameters, which are key for properties such as negative refractive index and superchiral light. Chiral meta/nano‐materials are promising for numerous technological applications, such as chiral molecular sensing, separation and synthesis, super‐resolution imaging, nanorobotics, and ultra‐thin broadband optical components for chiral light. This review covers some of the fundamentals and highlights recent trends. We begin by discussing linear chiroptical effects. We then survey the design of modern chiral materials. Next, the emergence and use of chirality parameters are summarized. In the following part, we cover the properties of nonlinear chiroptical materials. Finally, in the conclusion section, we point out current limitations and future directions of development.

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Section: Linear Chiroptical Effectsmentioning

confidence: 99%

Chirality and Chiroptical Effects in Metal Nanostructures: Fundamentals and Current Trends

Collins

Kuppe

Hooper

et al. 2017

Advanced Optical Materials

289

246

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show abstract

“…Compared with the chiral gold NPs, the structures of chiral silver nanoclusters have rarely been reported. Currently known chiral thiolate‐protected silver NPs are stabilized by glutathione or cysteine, but the chirality may be due primarily to the Ag(I)‐GS surface rather than arising from the asymmetric placement of achiral ligands . Unfortunately, their crystal structures have not been identified by X‐ray yet.…”

Section: Multi‐ligand‐stabilized Chiral Silver Nanoclustersmentioning

confidence: 99%

“…Currently known chiral thiolate-protected silver NPs are stabilized by glutathione or cysteine, but the chirality may be due primarily to the Ag(I)-GS surface rather than arising from the asymmetric placement of achiral ligands. [69][70][71] Unfortunately, their crystal structures have not been identified by X-ray yet. 36,1900043 In recent years, stable small chiral silver NPs have been synthesized by a combination of different types of ligands such as thiolate/amino acids, [72] thiolate/phosphine, [73][74][75] and thiolate/halides.…”

Section: Multi-ligand-stabilized Chiral Silver Nanoclustersmentioning

confidence: 99%

Chiral Noble Metal Nanoparticles and Nanostructures

Karimova

Aikens

2019

Part & Part Syst Charact

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The origins of chirality and chiroptical properties in ligand‐protected gold and silver nanoparticles (NPs) are considered herein. Current conceptual models including the chiral core model, dissymmetric field model, and chiral footprint model are described as mechanisms that contribute to the understanding of chirality in these systems. Then, recent studies on thiolate‐stabilized gold NPs, phosphine‐stabilized gold NPs, multi‐ligand‐stabilized silver NPs, and DNA‐stabilized silver NPs are discussed. Insights into the origin of chiroptical properties including reasons for large Cotton effects in circular dichroism spectra are considered using both experimental and theoretical data available. Theoretical calculations using density functional theory (DFT) and time‐dependent DFT methods are found to be extremely useful for providing insights into the origin of chirality. The origin of chirality in ligand‐protected gold and silver NPs can be considered to be a complex phenomenon, arising from a combination of the three conceptual models.

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“…It has been reported that large silver NPs (~20 and ~50 nm in diameter) modified by l -Cys show CD signals in the region from 220 to 320 nm [34]. Two types of silver nanoparticles with different diameters, size distributions and optical parameters exhibited very similar optical activities after incubation with l -Cys.…”

Section: Resultsmentioning

confidence: 99%

“…When the concentration of cysteine was enough to form a monolayer on the surface of Ag NPs, the concentration of cysteine adsorbed on the surface was related to the total surface area of the Ag NPs. The total surface area of the Ag NPs (ANPs) with different sizes can be calculated using equation [34]:ANPs=3cAgNO3VMAgρAgrNP where c AgNO3 is the concentration of AgNO 3 solution used for Ag NP preparation, V is the volume of the sample, M Ag is molecular weight of silver, ρ Ag is the density of silver and r NP is the radius of a nanoparticle. Figure 4D is a summary of the anisotropy factors and the total surface areas for Ag NPs with different sizes.…”

Section: Resultsmentioning

confidence: 99%

A Surface Mediated Supramolecular Chiral Phenomenon for Recognition of l- and d-Cysteine

Wang

Zhang

et al. 2018

Nanomaterials

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Chiral recognition is of fundamental importance in chemistry and life sciences and the principle of chiral recognition is instructive in chiral separation and enantioselective catalysis. Non-chiral Ag nanoparticles (NPs) conjugated with chiral cysteine (Cys) molecules demonstrate strong circular dichroism (CD) responses in the UV range. The optical activities of the l-/d-Cys capped Ag NPs are associated with the formation of order arrangements of chiral molecules on the surface of Ag NPs, which are promoted by the electrostatic attraction and hydrogen bonding interaction. The intensity of the chiroptical response is related to the total surface area of Ag NPs in the colloidal solution. The anisotropy factor on the order of 10−2 is acquired for Ag NPs with the size varying from ~2.4 to ~4.5 nm. We demonstrate a simple and effective method for the fabrication of a quantitative chiral sensing platform, in which mesoporous silica coated Ag nanoparticles (Ag@mSiO2) were used as chiral probes for recognition and quantification of Cys enantiomers.

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Chiral supramolecular nanoparticles: The study of chiral surface modification of silver nanoparticles by cysteine and its derivatives

Cited by 15 publications

References 38 publications

Chirality and Chiroptical Effects in Metal Nanostructures: Fundamentals and Current Trends

Chirality and Chiroptical Effects in Metal Nanostructures: Fundamentals and Current Trends

Chiral Noble Metal Nanoparticles and Nanostructures

A Surface Mediated Supramolecular Chiral Phenomenon for Recognition of l- and d-Cysteine

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