Surface Single-Atom Tailoring of a Gold Nanoparticle

Gan, Zibao; Chen, Jishi; Liao, Lingwen; Zhang, Hongwen; Wu, Zhikun

doi:10.1021/acs.jpclett.7b02982

Cited by 52 publications

(67 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The C 2 symmetric arrangement of the two giant motifs also contributes to the overall chirality. Successive work illustrates single-atom tailoring on the surface, [143] which can be simply described as adding one additional μ 4 -S atom into the tetrahedral Au 4 (Figure 4c, middle) at the left bottom part of the kernel in Au 60 S 7 (SR) 36 (Figure 4c, right), making it part of the giant staple motifs. We rationalize that such a symmetrybreaking tailoring increases the chirality of the whole structure.…”

Section: Capping Sulfidomentioning

confidence: 99%

Chirality and Surface Bonding Correlation in Atomically Precise Metal Nanoclusters

et al. 2020

View full text Add to dashboard Cite

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...

show abstract

Section: Capping Sulfidomentioning

confidence: 99%

Chirality and Surface Bonding Correlation in Atomically Precise Metal Nanoclusters

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Au 38 (SR) 20 (PPh 3 ) 4 [36] fcc-Au 34 Au 38 (CC-Ph) 20 Au 44 (SR) 26 [40] I h -Au 39 Au 52 Au 52 (SR) 32 [37,41] fcc-Au 48 fcc-Au 50 Au 60 Au 60 Se 2 (PPh 3 ) 10 (SePh) 15 [42] -I h -Au 60 Au 60 S 6 (SR) 36 [43] fcc-Au 20 Au 60 S 7 (SR) 36 [44] fcc-Au 17…”

Section: Au 24unclassified

“…The quasi-isomers sometimes show the same kernel structure while the surface staples show different patterns (e.g., Au 28 (SR) 20 ). [10] Thes ame core but different surface can be observed even with only one or two differences in the number of Au atoms and ligands,asin the case of surface "tailored" NCs prepared by al igand based-strategy (e.g., Au 102 (SR) 44 vs. Au 103 S 2 (SR) 41 ).…”

Section: Tailoring the Structure Of Nanoclustersmentioning

confidence: 99%

See 1 more Smart Citation

Atomically Tailored Gold Nanoclusters for Catalytic Application

et al. 2019

View full text Add to dashboard Cite

Recent advances in the synthetic chemistry of atomically precise metal nanoclusters (NCs) have significantly broadened the accessible sizes and structures. Such particles are well defined and have intriguing properties, thus, they are attractive for catalysis. Especially, those NCs with identical size but different core (or surface) structure provide unique opportunities that allow the specific role of the core and the surface to be mapped out without complication by the size effect. Herein, we summarize recent work with isomeric Aun NCs protected by ligands and isostructural NCs but with different surface ligands. The highlighted work includes catalysis by spherical and rod‐shaped Au25 (with different ligands), quasi‐isomeric Au28(SR)20 with different R groups, structural isomers of Au38(SR)24 (with identical R) and Au38S2(SR)20 with body‐centred cubic (bcc) structure, and isostructural [Au38L20(PPh3)4]2+ (different L). These isomeric and/or isostructural NCs have provided valuable insights into the respective roles of the kernel, surface staples, and the type of ligands on catalysis. Future studies will lead to fundamental advances and development of tailor‐made catalysts.

show abstract

“…Great progress has been achieved in the structure determination of metal nanoclusters. To date, a series of metal nanoclusters have been revealed, especially Au nanoclusters, Au 16 , Au 18 , Au 21 , Au 23 , Au 24 , Au 25 , Au 28 , Au 30 , Au 36 , Au 38 , Au 60 , Au 92 , Au 102 , Au 130 , Au 133 , Au 144 , Au 246 , and Au 279 . In contrast, there are only a relatively limited number of thiolated silver nanoclusters with well‐defined crystal structure, including Ag 25 , Ag 29 , Ag 44 , Ag 141 , Ag 136 , and Ag 374 .…”

Section: Methodsmentioning

confidence: 99%

Cu²⁺‐Induced Structural Isomers: Effect of Foreign Metal Ions on the Structure and Properties of Silver Nanoclusters

Lin

Liu

et al. 2019

Chemistry An Asian Journal

View full text Add to dashboard Cite

Metal ions have an important impact on the precise control of the synthesis and atomic structural arrangement of noble metal nanoclusters. In this work, the effect of metal ions on the isomer generation of metal nanoclusters is revealed for the first time. Compared with the previous Ag23 nanoclusters with two face‐centered cubic (fcc) unit cells twisting 27°, the Ag23 isomer had a higher symmetry structure with two fcc unit cells almost overlapping. In addition, the UV/Vis absorption spectrum of the isomer showed a slight redshift of approximately 14 nm. The redshift might be because of the modulation of electronic structure, which is derived from fine‐tuned crystal structure. Based on the experimental results, we provide mechanisms to explain the Cu2+ effect on the structural isomer. This work reports a significant finding to tune precisely the crystal structure and understand the mechanism of shape‐controlled synthesis of metal nanoclusters.

show abstract

Surface Single-Atom Tailoring of a Gold Nanoparticle

Cited by 52 publications

References 46 publications

Chirality and Surface Bonding Correlation in Atomically Precise Metal Nanoclusters

Chirality and Surface Bonding Correlation in Atomically Precise Metal Nanoclusters

Atomically Tailored Gold Nanoclusters for Catalytic Application

Cu²⁺‐Induced Structural Isomers: Effect of Foreign Metal Ions on the Structure and Properties of Silver Nanoclusters

Contact Info

Product

Resources

About

Surface Single-Atom Tailoring of a Gold Nanoparticle

Cited by 52 publications

References 46 publications

Chirality and Surface Bonding Correlation in Atomically Precise Metal Nanoclusters

Chirality and Surface Bonding Correlation in Atomically Precise Metal Nanoclusters

Atomically Tailored Gold Nanoclusters for Catalytic Application

Cu2+‐Induced Structural Isomers: Effect of Foreign Metal Ions on the Structure and Properties of Silver Nanoclusters

Contact Info

Product

Resources

About

Cu²⁺‐Induced Structural Isomers: Effect of Foreign Metal Ions on the Structure and Properties of Silver Nanoclusters