Synthesis, Stability, and Photoluminescence Properties of PdAu10(PPh3)8Cl2 Clusters

Kurashige, Wataru

doi:10.1007/s10876-011-0437-8

Cited by 33 publications

(28 citation statements)

References 37 publications

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“…It is important to mention here that for this cluster the molecular peak with 4− charge has much lower intensity compared with the fragments seen in the lower mass range (m/z 100−1500). 32 Au 25 and Ag 44 are the most stable clusters reported so far, for the case of gold and silver, respectively. They have closed-shell electronic configuration consisting of 8 and 18 number of electrons.…”

Section: Section: Physical Processes In Nanomaterials and Nanostructuresmentioning

confidence: 89%

“…For example, the stable Au 25 (SR) 18 cluster shows a fragment in the mass spectrum due to the Au 4 (SR) 4 loss. 52 Even the stable Ag 44 (SR) 30 cluster, for which the crystal structure was determined recently, 35,36 shows several fragments due to Ag m (SR) n losses. It is important to mention here that for this cluster the molecular peak with 4− charge has much lower intensity compared with the fragments seen in the lower mass range (m/z 100−1500).…”

Section: Section: Physical Processes In Nanomaterials and Nanostructuresmentioning

confidence: 99%

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Isolation and Tandem Mass Spectrometric Identification of a Stable Monolayer Protected Silver–Palladium Alloy Cluster

Sarkar

Chakraborty

Panwar

et al. 2014

J. Phys. Chem. Lett.

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A selenolate-protected Ag−Pd alloy cluster was synthesized using a one-pot solution-phase route. The crude product upon chromatographic analyses under optimized conditions gave three distinct clusters with unique optical features. One of these exhibits a molecular peak centered at m/z 2839, in its negative ion mass spectrum assigned to Ag 5 Pd 4 (SePh) 12 − , having an exact match with the corresponding calculated spectrum. Tandem mass spectrometry of the molecular ion peak up to MS 9 was performed. Complex isotope distributions in each of the mass peaks confirmed the alloy composition. We find the Ag 3 Pd 3 − core to be highly stable. The composition was further supported by scanning electron microscopy, energy-dispersive spectroscopy, and X-ray photoelectron spectroscopy. SECTION: Physical Processes in Nanomaterials and

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Section: Section: Physical Processes In Nanomaterials and Nanostructuresmentioning

confidence: 89%

Section: Section: Physical Processes In Nanomaterials and Nanostructuresmentioning

confidence: 99%

Isolation and Tandem Mass Spectrometric Identification of a Stable Monolayer Protected Silver–Palladium Alloy Cluster

Sarkar

Chakraborty

Panwar

et al. 2014

J. Phys. Chem. Lett.

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“…However, since these metal clusters 30 are easily degraded in solution, their poor stability raises questions with regard to their viability as practical materials. 16 Thiolate-protected gold clusters (Au n (SR) m ), however, as reported in 1994 by Brust et al, 17 exhibit higher stability, due to the strong bonds formed between the metal and the thiolate 35 ligands. These clusters are stable even at high temperature in solution.…”

Section: Introductionmentioning

confidence: 93%

Toward the creation of stable, functionalized metal clusters

Kurashige

Niihori

Nobusada

2013

Phys. Chem. Chem. Phys.

Self Cite

103

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Nanomaterials which exhibit both stability and functionality are currently considered to hold the most promise as components of nanotechnology devices. Thiolate (RS)-protected gold nanoclusters (Aun(SR)m) have attracted significant attention in this regard and, among these, the magic clusters are believed to be the best candidates since they are the most stable. We have investigated the effects of heteroatom doping, protection by selenolate ligands and protection by photoresponsive thiolates on the stability and physical/chemical properties of these clusters. Through such studies, we have attempted to establish methods of modifying magic Aun(SR)m clusters as a means of creating metal clusters that are both robust and functional. This paper summarizes our studies towards this goal and the obtained results.

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“…In addition to the thiolate‐protected Au‐Pd NCs in solution, naked Au‐Pd NCs in gas phase and phosphine‐protected Au‐Pd NCs in solution have also been studied extensively in the research community . Moreover, many studies have indicated the excellent catalytic activities of Au‐Pd and Au‐Pt NCs .…”

Section: Synthesis Of Monodisperse And/or Luminescent Bi‐mncsmentioning

confidence: 99%

“…The synthetic strategies for mono-MNCs have been well discussed in several review articles, [1][2][3][4][5][6]16,30,32,[50][51][52] and readers who are interested in that topic wileyonlinelibrary.com www.particle-journal.com www.MaterialsViews.com REVIEW in mono-MNCs, a number of monodisperse bi-MNCs have been successfully synthesized by using the Brust or Brust-like method. [34][35][36][37]47,52,[86][87][88][89][90][91][92][93][94][95][96][97][98] In general, two metal ions such as Au 3+ and Ag + , are simultaneously reduced by the addition of a certain amount of NaBH 4 , leading to the formation of bi-MNCs in the reaction solution. Similar to the mono-MNCs, where thiolated Au 25 , Au 38 , and Au 144 NCs are the most common and well-studied NC species because of their superior stability in solution, intriguing optical properties, well-defi ned and known cluster structures, and facile syntheses, bi-MNCs comprising of 25, 38, and 144 metal atoms are three most common species that have been synthesized by using the co-reduction method.…”

Section: Introductionmentioning

confidence: 99%

Recent Advances in the Synthesis and Applications of Ultrasmall Bimetallic Nanoclusters

Yuan

Dou

Zheng

et al. 2015

Part & Part Syst Charact

108

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1wileyonlinelibrary.com www.particle-journal.com www.MaterialsViews.com REVIEWUltrasmall bimetallic nanoclusters (or bi-MNCs for short) have recently emerged as a new class of multi-functional nanoparticles due to their ultrasmall size (typically below 2 nm), unique molecular-like properties (e.g., quantized charging and strong luminescence), controlled cluster compositions (at the atomic level), synergistic physicochemical properties, and rich surface chemistry. Such intriguing properties have motivated the cluster community to develop effi cient methods for the synthesis of high-quality bi-MNCs, which can also be seen from the quantum increase of reported synthetic protocols for bi-MNCs. Recent advances in the development of effi cient synthesis methods for high-quality bi-MNCs also facilitate the application explorations of bi-MNCs in diverse fi elds like catalysis, sensors, and biomedicine. This Review article fi rst surveys current progress in the synthesis of bi-MNCs, especially for those NCs with good control of cluster size and composition, followed by a detailed discussion on some unique physicochemical properties of bi-MNCs. The intriguing properties of bi-MNCs have made them ideal platforms for application explorations in catalysis, sensors, and biomedicine, which are discussed in the second section. In the last section, a brief outlook on future developments of functional bi-MNCs is presented, with a particular focus on the controlled synthesis and practical applications of bi-MNCs. IntroductionNoble metal nanoclusters (MNCs), such as Au and Ag NCs, typically comprising of a hundred metal atoms or less, are a subclass of metal nanoparticles (MNPs). [ 1,2 ] MNCs contain a small metal core with sizes below 2 nm and an organic ligand shell. [3][4][5] Particles in this sub-2-nm size region show characteristic quantum confi nement effects, which leads to their discrete and size-dependent electronic transitions. Sub-2-nm MNCs also feature with unique geometric cluster structures. These properties are distinctively different from their larger counterparts-MNPs with core sizes above 2 nm. For example, MNPs show quasi-continuous electronic states and typically adopt a face centered cubic ( fcc) atomic packing. [ 2,6 ] as magnetism, [ 7,8 ] HOMO-LUMO transitions, [9][10][11] quantized charging, [ 10,12 ] and strong luminescence. [13][14][15][16] Such intriguing physicochemical properties have made MNCs good platforms to address some key challenges in the fi elds of catalysis, energy conversion, drug delivery, sensor development, biomedicine, and nanophotonics. [17][18][19][20][21][22][23][24][25][26][27][28][29] The diverse yet promising applications of MNCs have also motivated rapid progress in the development of functional MNCs. [30][31][32][33] In the wake of extensive development of mono-metallic NCs (mono-MNCs for short), more recently, the cluster community has begun to investigate functional NCs comprising of two or more metal species, and such bi-or multi-metallic NCs (bi-or multi-MNCs for short) have ...

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Synthesis, Stability, and Photoluminescence Properties of PdAu10(PPh3)8Cl2 Clusters

Cited by 33 publications

References 37 publications

Isolation and Tandem Mass Spectrometric Identification of a Stable Monolayer Protected Silver–Palladium Alloy Cluster

Isolation and Tandem Mass Spectrometric Identification of a Stable Monolayer Protected Silver–Palladium Alloy Cluster

Toward the creation of stable, functionalized metal clusters

Recent Advances in the Synthesis and Applications of Ultrasmall Bimetallic Nanoclusters

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