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Wang M, Li S, Tang X, Zuo D, Jia Y, Guo S, Guan ZJ, Shen H. One-step preparation of Pt/Ag nanoclusters for CO 2 transformation. Phys Chem Chem Phys 2023; 25:30373-30380. [PMID: 37909301 DOI: 10.1039/d3cp02736h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2023]
Abstract
Structurally precise metal nanoclusters with a facile synthetic process and high catalytic performance have been long pursued. These atomically precise nanocatalysts are regarded as model systems to study structure-performance relationships, surface coordination chemistry, and the reaction mechanism of heterogeneous metal catalysts. Nevertheless, the research on silver-based nanoclusters for driving chemical transformations is sluggish in comparison to gold counterparts. Herein, we report the one-step synthesis of Pt/Ag alloy nanoclusters of [PtAg9(C18H12Br3P)7Cl3](C18H12Br3P), which are highly active in catalysing cycloaddition reactions of CO2 and epoxides. The cluster was obtained in a rather simple way with the reduction of silver and platinum salts in the presence of ligands in one pot. The molecular structure of the titled cluster describes the protection of the Pt-centred Ag9 crown by the shell of phosphine ligands and halides. Its electronic structure, as revealed by density function theoretical calculations, adopts a superatomic geometry with 1S21P6 configuration. Interestingly, the cluster displays high activity in the formation of cyclic carbonates from CO2 under mind conditions.
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Affiliation(s)
- Meng Wang
- College of Energy Materials and Chemistry, Inner Mongolia University, Hohhot 010021, China.
| | - Simin Li
- College of Energy Materials and Chemistry, Inner Mongolia University, Hohhot 010021, China.
| | - Xiongkai Tang
- State Key Laboratory for Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Dongjie Zuo
- College of Energy Materials and Chemistry, Inner Mongolia University, Hohhot 010021, China.
| | - Yanyuan Jia
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, China
| | - Shuo Guo
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, China
| | - Zong-Jie Guan
- College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Hui Shen
- College of Energy Materials and Chemistry, Inner Mongolia University, Hohhot 010021, China.
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Zhen Y, Jin S, Kang X, Xu C, Fang C, Hu D, Zhu M. [Pt 1Ag 37(SAdm) 21(Dppp) 3Cl 6] 2+: intercluster transformation and photochemical properties. Inorg Chem Front 2022. [DOI: 10.1039/d2qi01082h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
A novel [Pt1Ag37(SAdm)21(Dppp)3Cl6]2+ nanocluster is reported, and the reaction with PPh3 triggers an intercluster transformation into [Pt1Ag28(SAdm)18(PPh3)4]2+. Using chiral Bdpp, the enantiomeric Pt1Ag37(SAdm)21(R/S-Bdpp)3Cl6 can be prepared.
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Affiliation(s)
- Yaru Zhen
- Department of Chemistry and Centre for Atomic Engineering of Advanced Materials, Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Anhui University, Hefei 230601, P. R. China
- Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Anhui University, Hefei 230601, P. R. China
| | - Shan Jin
- Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, P. R. China
| | - Xi Kang
- Department of Chemistry and Centre for Atomic Engineering of Advanced Materials, Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Anhui University, Hefei 230601, P. R. China
- Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Anhui University, Hefei 230601, P. R. China
| | - Chang Xu
- Department of Chemistry and Centre for Atomic Engineering of Advanced Materials, Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Anhui University, Hefei 230601, P. R. China
| | - Cao Fang
- Department of Chemistry and Centre for Atomic Engineering of Advanced Materials, Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Anhui University, Hefei 230601, P. R. China
- Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Anhui University, Hefei 230601, P. R. China
| | - Daqiao Hu
- Department of Chemistry and Centre for Atomic Engineering of Advanced Materials, Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Anhui University, Hefei 230601, P. R. China
- Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Anhui University, Hefei 230601, P. R. China
| | - Manzhou Zhu
- Department of Chemistry and Centre for Atomic Engineering of Advanced Materials, Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Anhui University, Hefei 230601, P. R. China
- Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Anhui University, Hefei 230601, P. R. China
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Chiu TH, Liao JH, Gam F, Chantrenne I, Kahlal S, Saillard JY, Liu CW. All-selenolate-protected eight-electron platinum/silver nanoclusters. NANOSCALE 2021; 13:12143-12148. [PMID: 34231628 DOI: 10.1039/d1nr02540f] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The first atomically and structurally precise platinum/silver superatoms protected by Se-donor ligands were synthesized in high yield by adopting ligand replacements on [PtAg20{S2P(OnPr)2}12] (3) with 12 equiv. of di-alkyl diselenophosph(in)ates. Structures of [PtAg20{Se2P(OR)2}12] (R = nPr (1a), iPr (1b)) and [PtAg20{Se2P(CH2CH2Ph)2}12] (2) were accurately determined by single-crystal X-ray diffraction to reveal an eight-electron [Pt@Ag12]4+ icosahedral core embedded within a cube of eight silver(i) atoms and wrapped into a shell of 12 diselenophosph(in)ates. While the lowest energy absorption band of the Se derivatives is red-shifted to longer wavelengths in comparison with the S analogue, it is blue-shifted in the emission spectra. Density functional theory (DFT) and TD-DFT calculations rationalize the electronic structures as those of eight-electron superatoms, with their HOMO and LUMO being the 1P and 1D levels, respectively. The two UV-visible lowest bands are associated with 1P → 1D metal to metal charge transfer (MMCT) transitions. The blue shift observed for the S analogue results from a larger HOMO-LUMO gap in the case of dithiolate ligands.
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Affiliation(s)
- Tzu-Hao Chiu
- Department of Chemistry, National Dong Hwa University, Hualien 974301, Taiwan, Republic of China.
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Khatun E, Pradeep T. New Routes for Multicomponent Atomically Precise Metal Nanoclusters. ACS OMEGA 2021; 6:1-16. [PMID: 33458454 PMCID: PMC7807469 DOI: 10.1021/acsomega.0c04832] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Accepted: 12/08/2020] [Indexed: 05/24/2023]
Abstract
Atomically precise metal nanoclusters (NCs), protected by a monolayer of ligands, are regarded as potential building blocks for advanced technologies. They are considered as intermediates between the atomic/molecular regime and the bulk. Incorporation of foreign metals in NCs enhances several of their properties such as catalytic activity, luminescence, and so on; hence, it is of high importance for tuning their properties and broadening the scope of applications. In most of the cases, enhancement in specific properties was observed upon alloying due to the synergistic effect. In the past several years, many alloy clusters have been synthesized, which show a tremendous change in the properties than their monometallic analogs. However, controlling the synthesis and tuning the structures of alloy NCs with atomic precision are major challenges. Various synthetic methodologies have been developed so far for the controlled synthesis of alloy NCs. In this perspective, we have highlighted those diverse synthetic routes to prepare alloys, which include co-reduction, galvanic reduction, antigalvanic reduction, metal deposition, ligand exchange, intercluster reaction, and reaction of NCs with bulk metals. Advancement in synthetic procedures will help in the preparation of alloy NCs with the desired structure and composition. Future perceptions concerning the progress of alloy nanocluster science are also provided.
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Affiliation(s)
- Esma Khatun
- Department of Chemistry,
DST Unit of Nanoscience (DST UNS) and Thematic Unit of Excellence
(TUE), Indian Institute of Technology Madras, Chennai 600036, India
| | - Thalappil Pradeep
- Department of Chemistry,
DST Unit of Nanoscience (DST UNS) and Thematic Unit of Excellence
(TUE), Indian Institute of Technology Madras, Chennai 600036, India
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Berti B, Bortoluzzi M, Cesari C, Femoni C, Iapalucci MC, Soleri L, Zacchini S. Synthesis, Structural Characterization, and DFT Investigations of [M xM' 5-xFe 4(CO) 16] 3- (M, M' = Cu, Ag, Au; M ≠ M') 2-D Molecular Alloy Clusters. Inorg Chem 2020; 59:15936-15952. [PMID: 33081462 PMCID: PMC8015236 DOI: 10.1021/acs.inorgchem.0c02443] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Miscellaneous 2-D molecular alloy clusters of the type [MxM'5-xFe4(CO)16]3- (M, M' = Cu, Ag, Au; M ≠ M') have been prepared through the reactions of [Cu3Fe3(CO)12]3-, [Ag4Fe4(CO)16]4- or [M5Fe4(CO)16]3- (M = Cu, Ag) with M'(I) salts (M' = Cu, Ag, Au). Their formation involves a combination of oxidation, condensation, and substitution reactions. The total structures of several [MxM'5-xFe4(CO)16]3- clusters with different compositions have been determined by means of single crystal X-ray diffraction (SC-XRD) and their nature in solution elucidated by electron spray ionization mass spectrometry (ESI-MS) and IR and UV-visible spectroscopy. Substitutional and compositional disorder is present in the solid state structures, and ESI-MS analyses point out that mixtures of isostructural clusters differing by a few M/M' coinage metals are present. SC-XRD studies indicate some site preferences of the coinage metals within the metal cores of these clusters, with Au preferentially in corner sites and Cu in the central site. DFT studies give theoretical support to the experimental structural evidence. The site preference is mainly dictated by the strength of the Fe-M bonds that decreases in the order Fe-Au > Fe-Ag > Fe-Cu, and the preferred structure is the one that maximizes the number of stronger Fe-M interactions. Overall, the molecular nature of these clusters allows their structures to be fully revealed with atomic precision, resulting in the elucidation of the bonding parameters that determine the distribution of the different metals within their metal cores.
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Affiliation(s)
- Beatrice Berti
- Dipartimento di Chimica Industriale "Toso Montanari", University of Bologna, Viale Risorgimento 4, I-40136 Bologna, Italy
| | - Marco Bortoluzzi
- Dipartimento di Scienze Molecolari e Nanosistemi, Ca' Foscari University of Venice, Via Torino 155, 30175 Mestre (Ve), Italy
| | - Cristiana Cesari
- Dipartimento di Chimica Industriale "Toso Montanari", University of Bologna, Viale Risorgimento 4, I-40136 Bologna, Italy
| | - Cristina Femoni
- Dipartimento di Chimica Industriale "Toso Montanari", University of Bologna, Viale Risorgimento 4, I-40136 Bologna, Italy
| | - Maria Carmela Iapalucci
- Dipartimento di Chimica Industriale "Toso Montanari", University of Bologna, Viale Risorgimento 4, I-40136 Bologna, Italy
| | - Leonardo Soleri
- Dipartimento di Chimica Industriale "Toso Montanari", University of Bologna, Viale Risorgimento 4, I-40136 Bologna, Italy
| | - Stefano Zacchini
- Dipartimento di Chimica Industriale "Toso Montanari", University of Bologna, Viale Risorgimento 4, I-40136 Bologna, Italy
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Chitosan-stabilized silver nanoclusters with luminescent, photothermal and antibacterial properties. Carbohydr Polym 2020; 250:116973. [PMID: 33049902 DOI: 10.1016/j.carbpol.2020.116973] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Revised: 08/04/2020] [Accepted: 08/18/2020] [Indexed: 11/23/2022]
Abstract
The aim of this paper is to achieve in situ photochemical synthesis of silver nanoclusters (AgNCs) stabilized by the multiple-amine groups of chitosan (Ch@AgNCs) with luminescent and photothermal properties. Ch@AgNCs were obtained by applying a fast and simple methodology previously described by our group. Direct functionalization of AgNCs with chitosan template provided new nanohybrids directly in water solution, both in the presence or absence of oxygen. The formation of hybrid AgNCs could be monitored by the rapid increase of the absorption and emission maximum band with light irradiation time. New Ch@AgNCs not only present photoluminescent properties but also photothermal properties when irradiated with near infrared light (NIR), transducing efficiently NIR into heat and increasing the temperature of the medium up to 23 °C. The chitosan polymeric shell associated to AgNCs works as a protective support stabilizing the metal cores, facilitating the storage of nanohybrids and preserving luminescent, photothermal and bactericide properties.
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