Same ligand – Different binding: A way to control the binding of N-acetyl-cysteine (NAC) to Pt clusters

Kunz, Sebastian; Maturi, Mark M.; Schrader, Imke; Backenköhler, Jana; Tschurl, Martin

doi:10.1016/j.jcis.2014.04.017

Cited by 9 publications

(12 citation statements)

References 26 publications

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“…Thus, the protecting molecules can easily be replaced by other ligands exhibiting stronger binding groups for functionalization of the nanoparticles. By this method, the particle size is preserved upon the functionalization procedure and the nanoparticles can be compared only by the influence of the stabilizing ligand [28]. All samples synthesized via the standard procedure comprised of particles with a mean diameter of 2.0 ± 0.4 nm (see Supporting Information).…”

Section: Resultsmentioning

confidence: 99%

Functionalization of small platinum nanoparticles with amines and phosphines: Ligand binding modes and particle stability

Wand

Bartl

Tschurl

et al. 2016

Journal of Colloid and Interface Science

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Section: Resultsmentioning

confidence: 99%

Functionalization of small platinum nanoparticles with amines and phosphines: Ligand binding modes and particle stability

Wand

Bartl

Tschurl

et al. 2016

Journal of Colloid and Interface Science

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“…Such a chirality transfer can be found in many other metal nanoparticles and nanoclusters. [63][64][65][66][67] To study the ligand-protected nanoclusters, direct imaging of particle morphology through TEM or SEM is not effective due to their ultrasmall size, and the often "blurred" interface. [68] The recent progress in atomically precise nanoclusters has led to total structure determination, and some selected chiral Au-thiolate nanoclusters of atomic precision in the range of 1-3 nm are shown in Scheme 1B-D.…”

Section: Advantage Of Atomically Precise Approach In Chirality Determmentioning

confidence: 99%

Chirality and Surface Bonding Correlation in Atomically Precise Metal Nanoclusters

et al. 2020

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In chemical science, chirality is indeed one of the most extensively studied phenomena. A chiral molecule possesses a pair of enantiomers and sometimes, only one of the enantiomers is effective as a functional unit or drug. [1,2] The mechanism on how the notorious enantiomers of thalidomide lead to teratogenic newborns has been revealed recently. [3] Chirality in coordination complexes has also been generalized in detail. [4] A classic example of molecules with point chirality is that it contains an asymmetric sp 3 carbon atom which is attached with four different atoms or groups. Such a molecule is not superimposable with its mirror image, and for a simple coordination complex, a metal atom-which is at the centerserves as the role of the chiral carbon (i.e., point chirality). As a result, the relative spatial arrangement of the substituents gives either a clockwise or an anticlockwise order, corresponding to the R and S enantiomers. Of note, the R/S notation of chirality has no fixed relation to the d/l notation (for sugars and amino acids). More generally speaking, chiral object is lack of S n symmetry elements; in other words, if a mirror plane (σ) and inversion (i) are both missing in the object, then it becomes chiral. From this definition, irregular objects are all chiral. Objects of C n (with n-fold axis) or D n (with C 2 axis perpendicular to the n-fold axis) symmetry are much more appealing as long-range order is created. Along with organic chiral molecules, [2] chiral complexes, [4] and chiral supramolecular systems with autonomous self-assembly generated by intermolecular noncovalent interactions have been discussed thoroughly in previous reviews. [5-9] Chiral inorganic nanostructures, with intermediate sizes between molecules of Å and objects of micrometers, are of critical significance owing to their tremendous applications in chiral catalysis, chiroptical metamaterials, enantioseparation, biomolecular and enantiomer sensing, as well as medicine. [10-12] For chiral semiconductor nanoparticles (NPs), commonly called quantum dots (QDs), such as cadmium chalcogenides, the chiral surface ligands are attached onto the QDs through covalent bonds, [13-17] and many applications can be designed. [18] The interactions of chiral moieties attached on graphene NPs lead to their helical assembly, enriching the optical and electronic properties of these chiral nanostructures and facilitating their applications. [19-21] The studies on chiral metal NPs greatly overwhelm those on the semiconductor counterparts. Metal NPs are known to have Chirality is ubiquitous in nature and occurs at all length scales. The development of applications for chiral nanostructures is rising rapidly. With the recent achievements of atomically precise nanochemistry, total structures of ligand-protected Au and other metal nanoclusters (NCs) are successfully obtained, and the origins of chirality are discovered to be associated with different parts of the cluster, including the surface ligands (e.g., swirl patterns), the organic-inorganic in...

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“…Although organic sulfide has strong affinity with silver, the sulfur-silver interaction might differ and be specific to the organic molecule containing the sulfur (Levard et al, 2011;Gondikas et al, 2012). Kunz et al (2014) also noted the interaction mechanisms with metal differed notably between NAC and cysteine, both containing organic thiol but having different molecule structures. Ethylenediaminetetraacetic acid (EDTA), a representative organic chelate, although containing no sulfur, may potentially have similar effect as the organic sulfide due to its exceptional capacity in coordinating and dissolving metals (Hauser et al, 2005;Finzgar and Lestan, 2007).…”

Section: Introductionmentioning

confidence: 93%

Organic matter induced mobilization of polymer-coated silver nanoparticles from water-saturated sand

Yang

Yin

Chen

et al. 2015

Science of The Total Environment

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Same ligand – Different binding: A way to control the binding of N-acetyl-cysteine (NAC) to Pt clusters

Cited by 9 publications

References 26 publications

Functionalization of small platinum nanoparticles with amines and phosphines: Ligand binding modes and particle stability

Functionalization of small platinum nanoparticles with amines and phosphines: Ligand binding modes and particle stability

Chirality and Surface Bonding Correlation in Atomically Precise Metal Nanoclusters

Organic matter induced mobilization of polymer-coated silver nanoparticles from water-saturated sand

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