Structural isomer and high-yield of Pt1Ag28 nanocluster via one-pot chemical wet method

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.

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“…Recently, Lin et al. reported structural isomer generation of alloy nanoclusters by changing the synthetic method …”

Section: Methodssupporting

confidence: 87%

“…Recently,L in et al reported structurali somer generation of alloy nanoclusters by changing the synthetic method. [27] To date,i ti ss till unclear what influences the self-assembly process and the stacking pattern of metal nanoclusters. In fact, there are many factorst hat influence the self-assembly process of metal nanoclusters during the synthetic process.…”

mentioning

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

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“…[ 28 ] Recently, aggregation‐induced emission enhancement (AIEE), crystallization induced emission enhancement (CIEE), and isomerism were also considered as promising strategies to improve the emission property of nanoclusters. [ 29–31 ]…”

Section: Introductionmentioning

confidence: 99%

Insight of the photoluminescence of atomically precise bimetallic nanoclusters with free electrons

Yang

Zhu

2020

J Chinese Chemical Soc

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Noble-metal nanoclusters with emission properties are promising candidtes for cell imaging, biosensing, photo-therapy applications due to their ultra-small size, good photostability, and high biocompatibility. It is of great importance to realize the atomic precision of such metal nanoclusters (NCs) because they allow us to investigate the origin of fluorescence at the atomic level. However, compared to quantum dots (QDs) and organic dyes, noble metal nanoclusters usually suffered from low quantum yield, which significantly limited their applications. Doping with other metal atoms is an effective strategy to enhance the fluorescent properties of metal NCs. Therefore, bimetallic nanoclusters possess enhanced emission properties relative to their monometallic counterparts. Although a couple of reviews have existed for bimetallic nanocluster, few of them concern their emissive properties. In this context, the emissive properties of atomically precise bimetallic nanoclusters are summarized in this minireview. Synergistic effect, state of aggregation, assembly, and isomerism on the fluorescence of bimetallic clusters and structure-photoluminescence property correlations are also discussed.

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“…[15] Theisomerism of clusters with the same number of core atoms but different assembly pattern is classified into the core-isomerism. For example, the two [Pt 1 Ag 28 (SR) 18 (PPh 3 ) 4 ] 2 + (Pt 1 Ag 28 -1/2 in Figure 1a)p repared by the one-pot [17] or ligand exchange [18] method correspond to the core-isomerism.T hese two clusters adopt the same exterior staples (four Ag 4 S 6 P 1 )b ut slightly different core structure (an FCC core in Pt 1 Ag 28 -1 [19] vs. ad istorted FCC-based core in Pt 1 Ag 28 -2 [20] ). Similarly,t he two reported Au 52 (SR) 32 [21,22] and the two Au 38 (SR) 24 [23,24] also correspond to the core-isomerism (Figure S1 a-b).…”

Section: Introductionmentioning

confidence: 99%

“…[10,[33][34][35] The isomeric nanoclustersw ith the same number of metal atoms and ligands are the simplest model system to probe the structural effect on properties. [15,36] For example, the distinct UV/Vis spectra of isomeric nanoclusters( such as in the group of Pt 1 Ag 28 -1/ 2 [19] and Au 30 -1/2 [29,30] )d emonstrate the sensitivity of the optical adsorption characteristict ot he atomic packing mode. In addition, the emission intensity of the FCC-based Au 42 (SR) 26 was significantly stronger than that of the non-FCC based isomer.…”

Section: Introductionmentioning

confidence: 99%

The Structure–Property Correlations in the Isomerism of Au₂₁(SR)₁₅ Nanoclusters by Density Functional Theory Study

Bai

Weng

et al. 2019

Chemistry An Asian Journal

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Isomerism of atomically precise noble metal nanoclusters provides an excellent platform to investigate the structure–property correlations of metal nanomaterials. In this study, we performed density functional theory (DFT) and time‐dependent (TD‐DFT) calculations on two Au21(SR)15 nanoclusters, one with a hexagonal closed packed core (denoted as Au21hcp), and the other one with a face‐centered cubic core (denoted as Au21fcc). The structural and electronic analysis on the typical Au–Au and Au–S bond distances, bond orders, composition of the frontier orbitals and the origin of optical absorptions shed light on the inherent correlations between these two clusters.

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Structural isomer and high-yield of Pt1Ag28 nanocluster via one-pot chemical wet method

Cited by 39 publications

References 47 publications

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

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

Insight of the photoluminescence of atomically precise bimetallic nanoclusters with free electrons

The Structure–Property Correlations in the Isomerism of Au₂₁(SR)₁₅ Nanoclusters by Density Functional Theory Study

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Structural isomer and high-yield of Pt1Ag28 nanocluster via one-pot chemical wet method

Cited by 39 publications

References 47 publications

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

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

Insight of the photoluminescence of atomically precise bimetallic nanoclusters with free electrons

The Structure–Property Correlations in the Isomerism of Au21(SR)15 Nanoclusters by Density Functional Theory Study

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

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

The Structure–Property Correlations in the Isomerism of Au₂₁(SR)₁₅ Nanoclusters by Density Functional Theory Study