1
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Nguyen HA, Mai QD, Nguyet Nga DT, Pham MK, Nguyen QK, Do TH, Luong VT, Lam VD, Le AT. Paper/GO/e-Au flexible SERS sensors for in situ detection of tricyclazole in orange juice and on cucumber skin at the sub-ppb level: machine learning-assisted data analysis. NANOSCALE ADVANCES 2024; 6:3106-3118. [PMID: 38868820 PMCID: PMC11166118 DOI: 10.1039/d3na01113e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Accepted: 04/23/2024] [Indexed: 06/14/2024]
Abstract
Despite being an excellent surface enhanced Raman scattering (SERS) active material, gold nanoparticles were difficult to be loaded onto the surface of filter paper to fabricate flexible SERS substrates. In this study, electrochemically synthesized gold nanoparticles (e-AuNPs) were deposited on graphene oxide (GO) nanosheets in solution by ultrasonication, resulting in the formation of a GO/Au hybrid material. Thanks to the support of GO, the hybrid material could adhere onto the surface of filter paper, which was immersed into a GO/Au solution for 24 h and dried naturally at room temperature. The paper-based materials were then employed as substrates for a surface enhanced Raman scattering (SERS) sensing platform to detect tricyclazole (TCZ), a widely used pesticide, resulting in better sensitivity compared to the use of paper/Au SERS sensors. With the most optimal GO content of 4%, paper/GO/Au SERS sensors could achieve a limit of detection of 1.32 × 10-10 M in standard solutions. Furthermore, the filter paper-based SERS sensors also exhibited significant advantages in sample collection in real samples. On one hand, the sensors were dipped into orange juice, allowing TCZ molecules in this real sample to be adsorbed onto their SERS active surface. On the other hand, they were pasted onto cucumber skin to collect the analytes. As a result, the paper/GO/Au SERS sensors could sense TCZ in orange juice and on cucumber skin at concentrations as low as 10-9 M (∼2 ppb). In addition, a machine learning model was designed and developed, allowing the sensing system to discriminate TCZ from nine other organic compounds and predict the presence of TCZ on cucumber skin at concentrations down to 10-9 M.
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Affiliation(s)
- Ha Anh Nguyen
- Phenikaa University Nano Institute (PHENA), Phenikaa University Hanoi 12116 Vietnam
| | - Quan Doan Mai
- Phenikaa University Nano Institute (PHENA), Phenikaa University Hanoi 12116 Vietnam
| | - Dao Thi Nguyet Nga
- Phenikaa University Nano Institute (PHENA), Phenikaa University Hanoi 12116 Vietnam
| | - Minh Khanh Pham
- Phenikaa University Nano Institute (PHENA), Phenikaa University Hanoi 12116 Vietnam
| | - Quoc Khanh Nguyen
- Faculty of Computer Science, Phenikaa University Hanoi 12116 Vietnam
| | - Trong Hiep Do
- Faculty of Computer Science, Phenikaa University Hanoi 12116 Vietnam
| | - Van Thien Luong
- Faculty of Computer Science, Phenikaa University Hanoi 12116 Vietnam
| | - Vu Dinh Lam
- Institute of Materials Science (IMS), Graduate University of Science and Technology (GUST), Vietnam Academy of Science and Technology 18 Hoang Quoc Viet Hanoi 10000 Vietnam
| | - Anh-Tuan Le
- Phenikaa University Nano Institute (PHENA), Phenikaa University Hanoi 12116 Vietnam
- Faculty of Materials Science and Engineering (MSE), Phenikaa University Hanoi 12116 Vietnam
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2
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Li W, Li F, Zhang X, Wu J, Yang G. Metallic Re 3O 2 with mixed-valence states. Phys Chem Chem Phys 2024; 26:13300-13305. [PMID: 38639135 DOI: 10.1039/d4cp00973h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/20/2024]
Abstract
Rhenium (Re) shows the richest valence states from +2 to +7 in compounds, but its mixed-valence states are still missing thus far. In this work, we have explored the Re-O phase diagram with a wide range of stoichiometric compositions under high pressure through first-principles structural search calculations. Besides identifying two novel high-pressure phases of ReO2 and ReO3, we reveal two hitherto unknown Re-rich Re3O2 and O-rich ReO4 compounds. Re atoms in Re3O2 show mixed-valence states due to their inequivalent coordination environments, the first example in Re-based compounds. Electronic structure calculations demonstrate that the four discovered Re-O phases exhibit metallicity contributed by Re 5d electrons. Among them, ReO3 has a predicted critical temperature of up to 12 K at 50 GPa, derived from the interaction between Re 5d electrons and Re-derived low-frequency phonons. Our study points to new opportunities to disclose novel transition metal compounds with mixed-valence states.
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Affiliation(s)
- Wenjing Li
- Centre for Advanced Optoelectronic Functional Materials Research and Key Laboratory for UV Light-Emitting Materials and Technology of Ministry of Education, Northeast Normal University, Changchun 130024, China.
| | - Fei Li
- State Key Laboratory of Metastable Materials Science & Technology and Key Laboratory for Microstructural Material Physics of Hebei Province, School of Science, Yanshan University, Qinhuangdao 066004, China.
| | - Xiaohua Zhang
- State Key Laboratory of Metastable Materials Science & Technology and Key Laboratory for Microstructural Material Physics of Hebei Province, School of Science, Yanshan University, Qinhuangdao 066004, China.
| | - Jinhui Wu
- Centre for Advanced Optoelectronic Functional Materials Research and Key Laboratory for UV Light-Emitting Materials and Technology of Ministry of Education, Northeast Normal University, Changchun 130024, China.
| | - Guochun Yang
- Centre for Advanced Optoelectronic Functional Materials Research and Key Laboratory for UV Light-Emitting Materials and Technology of Ministry of Education, Northeast Normal University, Changchun 130024, China.
- State Key Laboratory of Metastable Materials Science & Technology and Key Laboratory for Microstructural Material Physics of Hebei Province, School of Science, Yanshan University, Qinhuangdao 066004, China.
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3
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Huang L, Liu W, Xing X. Adsorption of O 2 on the Preferred -O-Au Sites of Small Gold Oxide Clusters: Charge-dependent Interaction and Activation. Molecules 2024; 29:1645. [PMID: 38611924 PMCID: PMC11013888 DOI: 10.3390/molecules29071645] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2024] [Revised: 04/01/2024] [Accepted: 04/04/2024] [Indexed: 04/14/2024] Open
Abstract
Decades of research have illuminated the significant roles of gold/gold oxide clusters in small molecule catalytic oxidation. However, many fundamental questions, such as the actual sites to adsorb and activate O2 and the impact of charge, remain unanswered. Here, we have utilized an improved genetic algorithm program coupled with the DFT method to systematically search for the structures of Au1-5Ox-/+/0 (x = 1-4) and calculated binding interactions between Au1-5Ox-/+/0 (x = 1-2) and O2, aiming to determine the active sites and to elucidate the impact of different charge states in gold oxide systems. The results revealed that the reactivity of all three kinds of small gold oxide clusters toward O2 is strongly site-dependent, with clusters featuring an -O-Au site exhibiting a preference for adsorption. The charges on small gold oxide clusters significantly impact the interaction strength and the activation degree of adsorbed O2: in the case of anionic cluster, the interaction between O2 and the -O-Au sites leads to a chemical reaction involving electron transfer, thereby significantly activating O2; in neutral and cationic clusters, the adsorption of O2 on their -O-Au sites can be viewed as an electrostatic interaction. Pointedly, for cationic clusters, the highly concentrated positive charge on the Au atom of the -O-Au sites can strongly adsorb but hardly activate the adsorbed O2. These results have certain reference points for understanding the gold oxide interfaces and the improved catalytic oxidation performance of gold-based systems in the presence of atomic oxygen species.
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Affiliation(s)
| | | | - Xiaopeng Xing
- Shanghai Key Lab of Chemical Assessment and Sustainability, Department of Chemistry, Tongji University, 1239 Siping Road, Shanghai 200092, China; (L.H.); (W.L.)
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4
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Liu Z, Yang Y, Yan Y, Yao X, Zhang F, Jia J, Li Y. Structural and Chemical Bonding Properties of AuS 2H 0/-: A Photoelectron Velocity-Map Imaging Spectroscopic and Theoretical Study. J Phys Chem A 2024; 128:1646-1655. [PMID: 38414332 DOI: 10.1021/acs.jpca.4c00089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/29/2024]
Abstract
Mass-selected photoelectron velocity-map imaging spectroscopy was employed to investigate the geometrical and electronic properties of AuS2H-/0. The comprehensive comparison between the experiment and theoretical calculations establishes that the ground-state AuS2H- anion has a mixed-ligand structure [SAuSH]- with an unsymmetrical S-Au-S unit. Further chemical bonding analyses on AuS2H and comparison with the isoelectronic AuS2- suggest that the unique S-Au-S unit in these species features two three-center, three-electron π-bonding, and one three-center, two-electron σ-bonding. The isoelectronic replacement of the extra electron in AuS2- by the H atom can lead to σ bonding evolution from the electron-sharing bond to the dative bond. These findings are conducive to the fundamental understanding of the intrinsic stability of thiolate-protected gold nanoclusters and their delicate ligand design to achieve desirable properties.
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Affiliation(s)
- Zhiling Liu
- School of Chemical and Material Science, Key Laboratory of Magnetic Molecules & Magnetic Information Materials, The Ministry of Education, Shanxi Normal University. No. 339, Taiyu Road, Taiyuan, Shanxi 030031, People's Republic of China
| | - Yufeng Yang
- School of Chemical and Material Science, Key Laboratory of Magnetic Molecules & Magnetic Information Materials, The Ministry of Education, Shanxi Normal University. No. 339, Taiyu Road, Taiyuan, Shanxi 030031, People's Republic of China
| | - Yonghong Yan
- School of Chemical and Material Science, Key Laboratory of Magnetic Molecules & Magnetic Information Materials, The Ministry of Education, Shanxi Normal University. No. 339, Taiyu Road, Taiyuan, Shanxi 030031, People's Republic of China
| | - Xiaoyue Yao
- School of Chemical and Material Science, Key Laboratory of Magnetic Molecules & Magnetic Information Materials, The Ministry of Education, Shanxi Normal University. No. 339, Taiyu Road, Taiyuan, Shanxi 030031, People's Republic of China
| | - Fuqiang Zhang
- School of Chemical and Material Science, Key Laboratory of Magnetic Molecules & Magnetic Information Materials, The Ministry of Education, Shanxi Normal University. No. 339, Taiyu Road, Taiyuan, Shanxi 030031, People's Republic of China
| | - Jianfeng Jia
- School of Chemical and Material Science, Key Laboratory of Magnetic Molecules & Magnetic Information Materials, The Ministry of Education, Shanxi Normal University. No. 339, Taiyu Road, Taiyuan, Shanxi 030031, People's Republic of China
| | - Ya Li
- School of Geographical Sciences, Shanxi Normal University, No. 339, Taiyu Road, Taiyuan, Shanxi 030031, People's Republic of China
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Pérez‐Bitrián A, Alvarez S, Baya M, Echeverría J, Martín A, Orduna J, Menjón B. Terminal Au-N and Au-O Units in Organometallic Frames. Chemistry 2023; 29:e202203181. [PMID: 36263870 PMCID: PMC10107225 DOI: 10.1002/chem.202203181] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Revised: 10/19/2022] [Accepted: 10/20/2022] [Indexed: 11/06/2022]
Abstract
Since gold is located well beyond the oxo wall, chemical species with terminal Au-N and Au-O units are extremely rare and limited to low coordination numbers. We report here that these unusual units can be trapped within a suitable organometallic frame. Thus, the terminal auronitrene and auroxyl derivatives [(CF3 )3 AuN]- and [(CF3 )3 AuO]- were identified as local minima by calculation. These open-shell, high-energy ions were experimentally detected by tandem mass spectrometry (MS2 ): They respectively arise by N2 or NO2 dissociation from the corresponding precursor species [(CF3 )3 Au(N3 )]- and [(CF3 )3 Au(ONO2 )]- in the gas phase. Together with the known fluoride derivative [(CF3 )3 AuF]- , they form an interesting series of isoleptic and alloelectronic complexes of the highly acidic organogold(iii) moiety (CF3 )3 Au with singly charged anions X- of the most electronegative elements (X=F, O, N). Ligand-field inversion in all these [(CF3 )3 AuX]- species results in the localization of unpaired electrons at the N and O atoms.
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Affiliation(s)
- Alberto Pérez‐Bitrián
- Instituto de Síntesis Química y Catálisis Homogénea (iSQCH)CSIC-Universidad de Zaragoza50009ZaragozaSpain
| | - Santiago Alvarez
- Departament de Química Inorgànica i Orgànica Facultat de QuímicaUniversitat de Barcelona08028BarcelonaSpain
| | - Miguel Baya
- Instituto de Síntesis Química y Catálisis Homogénea (iSQCH)CSIC-Universidad de Zaragoza50009ZaragozaSpain
| | - Jorge Echeverría
- Instituto de Síntesis Química y Catálisis Homogénea (iSQCH)CSIC-Universidad de Zaragoza50009ZaragozaSpain
| | - Antonio Martín
- Instituto de Síntesis Química y Catálisis Homogénea (iSQCH)CSIC-Universidad de Zaragoza50009ZaragozaSpain
| | - Jesús Orduna
- Instituto de Nanociencia y Materiales de Aragón (INMA)CSIC-Universidad de Zaragoza50009ZaragozaSpain
| | - Babil Menjón
- Instituto de Síntesis Química y Catálisis Homogénea (iSQCH)CSIC-Universidad de Zaragoza50009ZaragozaSpain
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6
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Kuge K, Yamauchi K, Sakai K. Theoretical study on the mechanism of the hydrogen evolution reaction catalyzed by platinum subnanoclusters. Dalton Trans 2023; 52:583-597. [PMID: 36421022 DOI: 10.1039/d2dt02645g] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
The smallest subnanocluster models of platinum colloid (Ptn) are supposed to diffuse in aqueous media in order to examine their behaviors when they are subjected to the electrocatalytic hydrogen evolution reaction under zero overpotential conditions at pH 0. The DFT approach allows us to clarify the nature of individual proton transfer (PT) and electron transfer (ET) processes together with the importance of relying on concerted proton-electron transfer (CPET) pathways to promote the majority of H* adsorption processes by Ptn subnanoclusters. Although the CPET processes are closely correlated with the Volmer steps (Pt + H+ + e- → Pt-H*) described so far in electrochemistry, our study for the first time points out the essential capability of the Ptn clusters to promote the multiple PT steps without the need to transfer any electrons, revealing the fundamentally high basicity of the naked Ptn clusters (pKa = 27-28 for Pt4, Pt5, and Pt6). The discrete cluster models adopted herein avoid the structural constraints forced by the standard slab models and enable us to discuss the drastic alterations in the geometric and electronic structures of the intermediates given by the consecutive promotion of multiple CPET steps. The weakening of the Pt-H* bond strength with the increasing number of CPET steps is well rationalized by carefully examining the changes in the ν(Pt-H*) vibrational frequencies, the hydricity, and the H2 desorption energy. The behaviors are also correlated with the underpotential and overpotential deposited hydrogen atoms (HUPD and HOPD) discussed in electrochemical studies for many years.
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Affiliation(s)
- Keita Kuge
- Department of Chemistry, Faculty of Science, Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan.
| | - Kosei Yamauchi
- Department of Chemistry, Faculty of Science, Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan.
| | - Ken Sakai
- Department of Chemistry, Faculty of Science, Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan.
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7
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Huang L, Liu W, Hu J, Xing X. Adsorption and Activation of O 2 on Small Gold Oxide Clusters: the Reactivity Dominated by Site-Specific Factors. J Phys Chem A 2022; 126:5594-5603. [PMID: 35952385 DOI: 10.1021/acs.jpca.2c04438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We experimentally explored adsorption and activation of O2 on small anionic clusters AuxOy- containing one to five gold atoms and between one and three oxygen atoms using an instrument including a magnetron sputtering cluster source, a micro flow reactor running at low temperature, and a time-of-flight mass spectrometer. Some species, including AuO-, one isomer of Au2O2-, Au3O-, one isomer of Au3O3-, and Au5O2-, can adsorb an O2 molecule. We theoretically explored the structures of these active species and the inert ones appearing in the experiment by combining a structure search strategy based on the genetic algorithm and the density functional theory (DFT) calculations. Impressively, all active species observed in the experiment have a -O-Au site, in which the gold atom is a dangling or a vertex atom. Each -O-Au site can strongly adsorb one O2 with its Au atom to form a straight-line structure -O-Au-O-, and the adsorbed O2 is significantly activated by accepting one electron with one of its π2p* orbitals. With no exception, all oxygen sites and the -O-Au-Au sites in AuxOy- are inert. Analyses on the density of states (DOS) of representative species well interpret the physical origins of the activity of -O-Au and the inertness of -O-Au-Au. The observations that site-specific factors dominate the reactivity of gold oxide clusters with O2 are in contrast to what happens in the reactions of Aun- with O2, where clusters' reactivity is completely determined by their global spins and electron detachment energies. The new conclusions in this work offer a reference to understand the crucial O2 activation processes in gold-based catalysts, since various gold oxide structures are commonly observed in these systems.
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Affiliation(s)
- Lulu Huang
- Shanghai Key Lab of Chemical Assessment and Sustainability, Department of Chemistry, Tongji University, 1239 Siping Road, Shanghai, 200092, P. R. China
| | - Wen Liu
- Shanghai Key Lab of Chemical Assessment and Sustainability, Department of Chemistry, Tongji University, 1239 Siping Road, Shanghai, 200092, P. R. China
| | - Jin Hu
- Shanghai Key Lab of Chemical Assessment and Sustainability, Department of Chemistry, Tongji University, 1239 Siping Road, Shanghai, 200092, P. R. China
| | - Xiaopeng Xing
- Shanghai Key Lab of Chemical Assessment and Sustainability, Department of Chemistry, Tongji University, 1239 Siping Road, Shanghai, 200092, P. R. China
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8
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Kim J, Yoon K, Shin H, Oh D, Lim JS. Multireference configuration interaction and coupled cluster study of Gold monosulfide (AuS) including spin–orbit coupling. Mol Phys 2021. [DOI: 10.1080/00268976.2021.1922774] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Joonghan Kim
- Department of Chemistry, The Catholic University of Korea, Bucheon, Republic of Korea
| | - Kihwan Yoon
- Department of Chemistry, The Catholic University of Korea, Bucheon, Republic of Korea
| | - Hyuna Shin
- Department of Chemistry, The Catholic University of Korea, Bucheon, Republic of Korea
| | - Dakyeung Oh
- Department of Chemistry, The Catholic University of Korea, Bucheon, Republic of Korea
| | - Jeong Sik Lim
- Safety Measurement Institute, Korea Research Institute of Standards and Science (KRISS), Daejeon, Republic of Korea
- Science of Measurement, University of Science and Technology (UST), Daejeon, Republic of Korea
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9
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Li L, Beckers H, Stüker T, Lindič T, Schlöder T, Andrae D, Riedel S. Molecular oxofluorides OMFn of nickel, palladium and platinum: oxyl radicals with moderate ligand field inversion. Inorg Chem Front 2021. [DOI: 10.1039/d0qi01151g] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
High-valent late transition metal oxo compounds attracted attention because of their peculiar metal–oxygen bond. Their oxo ligands exhibit an electrophilic and distinct radical oxyl (O˙−) rather than the more common nucleophilic (O2−) character.
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Affiliation(s)
- Lin Li
- Freie Universität Berlin
- Institut für Chemie und Biochemie – Anorganische Chemie
- 14195 Berlin
- Germany
| | - Helmut Beckers
- Freie Universität Berlin
- Institut für Chemie und Biochemie – Anorganische Chemie
- 14195 Berlin
- Germany
| | - Tony Stüker
- Freie Universität Berlin
- Institut für Chemie und Biochemie – Anorganische Chemie
- 14195 Berlin
- Germany
| | - Tilen Lindič
- Freie Universität Berlin
- Institut für Chemie und Biochemie – Theoretische Chemie
- 14195 Berlin
- Germany
| | - Tobias Schlöder
- Karlsruher Institut für Technologie
- Institut für Nanotechnologie
- 76344 Eggenstein-Leopoldshafen
- Germany
| | - Dirk Andrae
- Freie Universität Berlin
- Institut für Chemie und Biochemie – Theoretische Chemie
- 14195 Berlin
- Germany
| | - Sebastian Riedel
- Freie Universität Berlin
- Institut für Chemie und Biochemie – Anorganische Chemie
- 14195 Berlin
- Germany
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10
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Pearlman BW, Wyse IA, Evens KK, Varberg TD. Rotational and hyperfine analysis of the A2∑+ - X12π3/2 and B2∑- - X12π3/2 transitions of AuS. Mol Phys 2019. [DOI: 10.1080/00268976.2019.1689305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
| | - Ian A. Wyse
- Department of Chemistry, Macalester College, St. Paul, MN, USA
| | - Kaarin K. Evens
- Department of Chemistry, Macalester College, St. Paul, MN, USA
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11
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Carro P, Salvarezza RC. Gold adatoms modulate sulfur adsorption on gold. NANOSCALE 2019; 11:19341-19351. [PMID: 31435624 DOI: 10.1039/c9nr05709a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Sulfur adsorption on Au(111) at high coverage has been studied by density functional calculations. In this case S species organize into rectangular structures containing 8 S atoms irrespective of the S source, which have been alternatively assigned to adsorbed monomeric S, adsorbed S2, adsorbed monomeric plus S2 species, and gold sulfide. We found that monomeric S at the high coverage organizes into S2 species that are stabilized into the 8-S structures by Au adatoms, forming gold disulfide complexes (Au-(S2)4). The Au atoms could be provided by decomposition of more diluted AuS3 containing phases, as recently proposed, and direct removal from terraces and step edges, both explaining the surface coverage of vacancy islands coexisting with the 8-S structures. The gold-disulfide complexes capture the disorder shown in the experimental STM images, explain the intrigued features of XPS, and also, give a smooth pathway to gold sulfide formation at higher temperatures. More importantly, the gold-disulfide complexes allow a unified picture of the gold-sulfur surface chemistry at high coverage for thiols and adsorbed sulfur species where the surface chemistry remains under discussion.
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Affiliation(s)
- Pilar Carro
- Área de Química Física, Departamento de Química, Facultad de Ciencias, Universidad de La Laguna, Instituto de Materiales y Nanotecnología, Avda. Francisco Sánchez, s/n 38200-La Laguna, Tenerife, Spain
| | - Roberto C Salvarezza
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA), Facultad de Ciencias Exactas, Universidad Nacional de La Plata, CONICET, La Plata 1900, Argentina.
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12
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Parsons AJ, Gleason SP, Varberg TD. High-resolution spectroscopy of the a4Σ−3/2 − X12Π3/2 system of gold monosulphide in the near infrared. Mol Phys 2018. [DOI: 10.1080/00268976.2018.1453095] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Austin J. Parsons
- Department of Chemistry and Biochemistry, University of California–San Diego , La Jolla, CA, USA
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13
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Abstract
Transition metal complexes bearing terminal oxido ligands are quite common, yet group 11 terminal oxo complexes remain elusive. Here we show that excited coinage metal atoms M (M = Au, Ag, Cu) react with OF2 to form hypofluorites FOMF and group 11 oxygen metal fluorides OMF2, OAuF and OAgF. These compounds have been characterized by IR matrix-isolation spectroscopy in conjunction with state-of-the-art quantum-chemical calculations. The oxygen fluorides are formed by photolysis of the initially prepared hypofluorites. The linear molecules OAgF and OAuF have a 3Σ − ground state with a biradical character. Two unpaired electrons are located mainly at the oxygen ligand in antibonding O−M π* orbitals. For the 2B2 ground state of the OMIIIF2 compounds only an O−M single bond arises and a significant spin-density contribution was found at the oxygen atom as well. While transition metal complexes bearing terminal oxido ligands are common, those of group 11 elements have yet to be experimentally observed. Here, Riedel and colleagues synthesise molecular oxygen fluorides of copper, silver and gold, and show that the oxo ligands possess radical character.
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14
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Han X, Qin M, Zhang X, Sun Z, Li X. Influences of metal (Cu, Ag, Au) doping on (AlO) 2 /(AlO) 2 − square-planar units. COMPUT THEOR CHEM 2017. [DOI: 10.1016/j.comptc.2017.06.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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15
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Zhang R, Yu Y, Steimle TC, Cheng L. The electric dipole moments in the ground states of gold oxide, AuO, and gold sulfide, AuS. J Chem Phys 2017; 146:064307. [PMID: 28201899 DOI: 10.1063/1.4975816] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The B2Σ- - X2Π3/2(0,0) bands of a cold molecular beam sample of gold monoxide, AuO, and gold monosulfide, AuS, have been recorded at high resolution both field free and in the presence of a static electric field. The observed electric field induced splittings and shifts were analyzed to produce permanent electric dipole moments, μ→el, of 2.94±0.06 D and 2.22±0.05 D for the X2Π3/2(v = 0) states of AuO and AuS, respectively. A molecular orbital correlation diagram is used to rationalize the trend in ground state μ→el values for AuX (X = F, Cl, O, and S) molecules. The experimentally determined μ→el are compared to those computed at the coupled-cluster singles and doubles (CCSD) level augmented with a perturbative inclusion of triple excitations (CCSD(T)) level of theory.
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Affiliation(s)
- Ruohan Zhang
- Department of Chemistry and Biochemistry, Arizona State University, Tempe, Arizona 85287-1604, USA
| | - Yuanqin Yu
- School of Physics and Material Science, Anhui University Hefei, 230601, China
| | - Timothy C Steimle
- Department of Chemistry and Biochemistry, Arizona State University, Tempe, Arizona 85287-1604, USA
| | - Lan Cheng
- Department of Chemistry, The Johns Hopkins University, Baltimore, Maryland 21218, USA
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16
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Prokeš L, Kubáček P, Peña-Méndez EM, Amato F, Conde JE, Alberti M, Havel J. Laser Ablation Synthesis of Gold Selenides by using a Mass Spectrometer as a Synthesizer: Laser Desorption Ionization Time-of-Flight Mass Spectrometry. Chemistry 2016; 22:11261-8. [DOI: 10.1002/chem.201600160] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2016] [Indexed: 11/12/2022]
Affiliation(s)
- Lubomír Prokeš
- Department of Chemistry; Faculty of Science; Masaryk University; Kamenice 5A14 625 00 Brno Czech Republic
- CEPLANT, R&D Center for Low-Cost Plasma and Nanotechnology Surface Modifications; Masaryk University; Kotlářská 2 611 37 Brno Czech Republic
| | - Pavel Kubáček
- Department of Chemistry; Faculty of Science; Masaryk University; Kamenice 5A14 625 00 Brno Czech Republic
| | - Eladia Maria Peña-Méndez
- Department of Chemistry; Faculty of Science; University of La Laguna, Campus de Anchieta; 38071 La Laguna, Tenerife Spain
| | - Filippo Amato
- Department of Chemistry; Faculty of Science; Masaryk University; Kamenice 5A14 625 00 Brno Czech Republic
| | - José Elias Conde
- Department of Chemistry; Faculty of Science; University of La Laguna, Campus de Anchieta; 38071 La Laguna, Tenerife Spain
| | - Milan Alberti
- Department of Chemistry; Faculty of Science; Masaryk University; Kamenice 5A14 625 00 Brno Czech Republic
- Department of Physical Electronics; Faculty of Science; Masaryk University; Kotlářská 2 611 37 Brno Czech Republic
- CEPLANT, R&D Center for Low-Cost Plasma and Nanotechnology Surface Modifications; Masaryk University; Kotlářská 2 611 37 Brno Czech Republic
| | - Josef Havel
- Department of Chemistry; Faculty of Science; Masaryk University; Kamenice 5A14 625 00 Brno Czech Republic
- Department of Physical Electronics; Faculty of Science; Masaryk University; Kotlářská 2 611 37 Brno Czech Republic
- CEPLANT, R&D Center for Low-Cost Plasma and Nanotechnology Surface Modifications; Masaryk University; Kotlářská 2 611 37 Brno Czech Republic
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17
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Johnson GE, Gunaratne D, Laskin J. Soft- and reactive landing of ions onto surfaces: Concepts and applications. MASS SPECTROMETRY REVIEWS 2016; 35:439-479. [PMID: 25880894 DOI: 10.1002/mas.21451] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2014] [Accepted: 10/31/2014] [Indexed: 06/04/2023]
Abstract
Soft- and reactive landing of mass-selected ions is gaining attention as a promising approach for the precisely-controlled preparation of materials on surfaces that are not amenable to deposition using conventional methods. A broad range of ionization sources and mass filters are available that make ion soft-landing a versatile tool for surface modification using beams of hyperthermal (<100 eV) ions. The ability to select the mass-to-charge ratio of the ion, its kinetic energy and charge state, along with precise control of the size, shape, and position of the ion beam on the deposition target distinguishes ion soft landing from other surface modification techniques. Soft- and reactive landing have been used to prepare interfaces for practical applications as well as precisely-defined model surfaces for fundamental investigations in chemistry, physics, and materials science. For instance, soft- and reactive landing have been applied to study the surface chemistry of ions isolated in the gas-phase, prepare arrays of proteins for high-throughput biological screening, produce novel carbon-based and polymer materials, enrich the secondary structure of peptides and the chirality of organic molecules, immobilize electrochemically-active proteins and organometallics on electrodes, create thin films of complex molecules, and immobilize catalytically active organometallics as well as ligated metal clusters. In addition, soft landing has enabled investigation of the size-dependent behavior of bare metal clusters in the critical subnanometer size regime where chemical and physical properties do not scale predictably with size. The morphology, aggregation, and immobilization of larger bare metal nanoparticles, which are directly relevant to the design of catalysts as well as improved memory and electronic devices, have also been studied using ion soft landing. This review article begins in section 1 with a brief introduction to the existing applications of ion soft- and reactive landing. Section 2 provides an overview of the ionization sources and mass filters that have been used to date for soft landing of mass-selected ions. A discussion of the competing processes that occur during ion deposition as well as the types of ions and surfaces that have been investigated follows in section 3. Section 4 discusses the physical phenomena that occur during and after ion soft landing, including retention and reduction of ionic charge along with factors that impact the efficiency of ion deposition. The influence of soft landing on the secondary structure and biological activity of complex ions is addressed in section 5. Lastly, an overview of the structure and mobility as well as the catalytic, optical, magnetic, and redox properties of bare ionic clusters and nanoparticles deposited onto surfaces is presented in section 6.
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Affiliation(s)
- Grant E Johnson
- Physical Sciences Division, Pacific Northwest National Laboratory, P.O. Box 999, MSIN K8-88, Richland, WA, 99352
| | - Don Gunaratne
- Physical Sciences Division, Pacific Northwest National Laboratory, P.O. Box 999, MSIN K8-88, Richland, WA, 99352
| | - Julia Laskin
- Physical Sciences Division, Pacific Northwest National Laboratory, P.O. Box 999, MSIN K8-88, Richland, WA, 99352
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18
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Ding XL, Liao HL, Zhang Y, Chen YM, Wang D, Wang YY, Zhang HY. Geometric and electronic properties of gold clusters doped with a single oxygen atom. Phys Chem Chem Phys 2016; 18:28960-28972. [DOI: 10.1039/c6cp05595h] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A systematic theoretical study on single oxygen atom doped gold clusters showed that a single oxygen atom can be adsorbed on various sites of gold surfaces, and obtain nearly one electron from gold atoms.
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Affiliation(s)
- Xun-Lei Ding
- Department of Mathematics and Physics
- North China Electric Power University
- Beijing
- P. R. China
| | - Heng-Lu Liao
- Department of Mathematics and Physics
- North China Electric Power University
- Beijing
- P. R. China
| | - Yan Zhang
- Department of Mathematics and Physics
- North China Electric Power University
- Beijing
- P. R. China
- Research Center for Ecological Engineering and Nonlinear Science
| | - Yi-Ming Chen
- Department of Mathematics and Physics
- North China Electric Power University
- Beijing
- P. R. China
| | - Dan Wang
- Department of Mathematics and Physics
- North China Electric Power University
- Beijing
- P. R. China
| | - Ya-Ya Wang
- Department of Mathematics and Physics
- North China Electric Power University
- Beijing
- P. R. China
| | - Hua-Yong Zhang
- Department of Mathematics and Physics
- North China Electric Power University
- Beijing
- P. R. China
- Research Center for Ecological Engineering and Nonlinear Science
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19
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Kokkin DL, Zhang R, Steimle TC, Wyse IA, Pearlman BW, Varberg TD. Au–S Bonding Revealed from the Characterization of Diatomic Gold Sulfide, AuS. J Phys Chem A 2015; 119:11659-67. [DOI: 10.1021/acs.jpca.5b08781] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Damian L. Kokkin
- Department of Chemistry and
Biochemistry, Arizona State University Tempe, Arizona 85287-1604, United States
| | - Ruohan Zhang
- Department of Chemistry and
Biochemistry, Arizona State University Tempe, Arizona 85287-1604, United States
| | - Timothy C. Steimle
- Department of Chemistry and
Biochemistry, Arizona State University Tempe, Arizona 85287-1604, United States
| | - Ian A. Wyse
- Department of Chemistry, Macalester College, St. Paul, Minnesota 55105-1899, United States
| | - Bradley W. Pearlman
- Department of Chemistry, Macalester College, St. Paul, Minnesota 55105-1899, United States
| | - Thomas D. Varberg
- Department of Chemistry, Macalester College, St. Paul, Minnesota 55105-1899, United States
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20
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Wang LS. Perspective: Electrospray photoelectron spectroscopy: From multiply-charged anions to ultracold anions. J Chem Phys 2015; 143:040901. [DOI: 10.1063/1.4927086] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Affiliation(s)
- Lai-Sheng Wang
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, USA
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21
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Xiong XG, Wang YL, Xu CQ, Qiu YH, Wang LS, Li J. On the gold-ligand covalency in linear [AuX2](-) complexes. Dalton Trans 2015; 44:5535-46. [PMID: 25697291 DOI: 10.1039/c4dt04031g] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Gold compounds, clusters, and nanoparticles are widely used as catalysts and therapeutic medicines; the interactions between gold and its ligands in these systems play important roles in their chemical properties and functionalities. In order to elucidate the nature of the chemical interactions between Au(I) and its ligands, herein we use several theoretical methods to study the chemical bonding in a variety of linear [AuX2](-) complexes, where X = halogen atoms (F, Cl, Br, I, At and Uus), H, OH, SH, OCH3, SCH3, CN and SCN. It is shown that the most important bonding orbitals in these systems have significant contributions from the Au sd hybridized atomic orbitals. The ubiquitous linear or quasi-linear structures of [AuX2](-) are attributed to the well-balanced optimal overlap in both σ and π bonding orbitals and minimal repulsion between the two negatively charged ligands. The stability of these complexes is related to the covalency of the Au-X bond and a periodic trend is found in the evolution of covalency along the halogen group ligands. The special stability of [Au(CN)2](-) is a result of strong covalent and ionic interactions. For the superheavy element Uus, the covalency of Au-Uus is enhanced through the spin-orbit interactions.
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Affiliation(s)
- Xiao-Gen Xiong
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
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22
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Liu HT, Huang DL, Liu Y, Cheung LF, Dau PD, Ning CG, Wang LS. Vibrational State-Selective Resonant Two-Photon Photoelectron Spectroscopy of AuS(-) via a Spin-Forbidden Excited State. J Phys Chem Lett 2015; 6:637-642. [PMID: 26262479 DOI: 10.1021/acs.jpclett.5b00053] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Vibrational state-selective resonant two-photon photoelectron spectra have been obtained via a triplet intermediate state ((3)Σ(-)) of AuS(-) near its detachment threshold using high-resolution photoelectron imaging of cryogenically cooled AuS(-) anions. Four vibrational levels of the (3)Σ(-) excited state are observed to be below the detachment threshold. Resonant two-photon absorptions through these levels yield vibrational state-selective photoelectron spectra to the (2)Σ final state of neutral AuS with broad and drastically different Franck-Condon distributions, reflecting the symmetries of the vibrational wave functions of the (3)Σ(-) intermediate state. The (3)Σ(-) excited state is spin-forbidden from the (1)Σ(+) ground state of AuS(-) and is accessed due to strong relativistic effects. The nature of the (3)Σ(-) excited state is confirmed by angular distributions of the photoelectron images and quantum calculations.
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Affiliation(s)
- Hong-Tao Liu
- †Department of Chemistry, Brown University, Providence, Rhode Island 02912, United States
- ‡Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
| | - Dao-Ling Huang
- †Department of Chemistry, Brown University, Providence, Rhode Island 02912, United States
| | - Yuan Liu
- §Department of Physics, State Key Laboratory of Low-Dimensional Quantum Physics, Tsinghua University, Beijing 100084, China
| | - Ling-Fung Cheung
- §Department of Physics, State Key Laboratory of Low-Dimensional Quantum Physics, Tsinghua University, Beijing 100084, China
| | - Phuong Diem Dau
- †Department of Chemistry, Brown University, Providence, Rhode Island 02912, United States
| | - Chuan-Gang Ning
- §Department of Physics, State Key Laboratory of Low-Dimensional Quantum Physics, Tsinghua University, Beijing 100084, China
| | - Lai-Sheng Wang
- †Department of Chemistry, Brown University, Providence, Rhode Island 02912, United States
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23
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Qin Z, Liu Z, Cong R, Xie H, Tang Z, Fan H. Photoelectron imaging and theoretical study on the structure and chemical binding of the mixed-ligand M(I) complexes, [HMSH]− (M = Cu, Ag, and Au). J Chem Phys 2014; 140:114307. [DOI: 10.1063/1.4868553] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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24
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Wen H, Liu YR, Xu KM, Huang T, Hu CJ, Zhang WJ, Huang W. Probing the 2D-to-3D structural transition in gold clusters with a single sulfur atom: AuxS0,±1 (x = 1–10). RSC Adv 2014. [DOI: 10.1039/c3ra47873d] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Gold sulfur clusters have received much attention because of the dramatic effect that the gold–sulfide interaction produces in thiol-passivated gold nanoparticles.
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Affiliation(s)
- Hui Wen
- Key Laboratory of the Atmospheric Composition and Optical Radiation
- Chinese Academy of Sciences
- Hefei, China
- Laboratory of Atmospheric Physico-Chemistry
- Anhui Institute of Optics & Fine Mechanics
| | - Yi-Rong Liu
- Laboratory of Atmospheric Physico-Chemistry
- Anhui Institute of Optics & Fine Mechanics
- Chinese Academy of Sciences
- Hefei, China
| | - Kang-Ming Xu
- Laboratory of Atmospheric Physico-Chemistry
- Anhui Institute of Optics & Fine Mechanics
- Chinese Academy of Sciences
- Hefei, China
| | - Teng Huang
- Laboratory of Atmospheric Physico-Chemistry
- Anhui Institute of Optics & Fine Mechanics
- Chinese Academy of Sciences
- Hefei, China
| | - Chang-Jin Hu
- Laboratory of Atmospheric Physico-Chemistry
- Anhui Institute of Optics & Fine Mechanics
- Chinese Academy of Sciences
- Hefei, China
| | - Wei-Jun Zhang
- Key Laboratory of the Atmospheric Composition and Optical Radiation
- Chinese Academy of Sciences
- Hefei, China
- Laboratory of Atmospheric Physico-Chemistry
- Anhui Institute of Optics & Fine Mechanics
| | - Wei Huang
- Key Laboratory of the Atmospheric Composition and Optical Radiation
- Chinese Academy of Sciences
- Hefei, China
- Laboratory of Atmospheric Physico-Chemistry
- Anhui Institute of Optics & Fine Mechanics
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25
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Tian WJ, Xu HG, Kong XY, Chen Q, Zheng WJ, Zhai HJ, Li SD. Photoelectron spectroscopy of lithium and gold alloyed boron oxide clusters: charge transfer complexes, covalent gold, hyperhalogen, and dual three-center four-electron hyperbonds. Phys Chem Chem Phys 2014; 16:5129-36. [DOI: 10.1039/c3cp55362k] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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26
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Theoretical advances of the structures and catalytic activities of small-sized gold nanoclusters. ACTA ACUST UNITED AC 2013. [DOI: 10.1007/s11434-013-0047-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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27
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Yang YF, Cui ZH, Ding YH. Bottom-up substitution assembly of AuF4−n0,−+nPO3 (n = 1–4): a theoretical study of novel oxyfluoride hyperhalogen molecules and anions AuF4−n(PO3)n0,−. Mol Phys 2013. [DOI: 10.1080/00268976.2013.845702] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Yi-fan Yang
- State Key Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jilin University, Changchun, People's Republic of China
| | - Zhong-hua Cui
- State Key Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jilin University, Changchun, People's Republic of China
| | - Yi-hong Ding
- State Key Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jilin University, Changchun, People's Republic of China
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28
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Chen H, Kong XY, Zheng W, Yao J, Kandalam AK, Jena P. Anomalous property of Ag(BO2)2 hyperhalogen: does spin-orbit coupling matter? Chemphyschem 2013; 14:3303-8. [PMID: 23943601 DOI: 10.1002/cphc.201300677] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2013] [Indexed: 11/10/2022]
Abstract
Hyperhalogens were recently identified as a new class of highly electronagative species which are composed of metals and superhalogens. In this work, high-level theoretical calculations and photoelectron spectroscopy experiments are systematically conducted to investigate a series of coinage-metal-containing hyperhalogen anions, Cu(BO(2))(2)(-), Ag(BO(2))(2)(-), and Au(BO(2))(2)(-). The vertical electron detachment energy (VDE) of Ag(BO(2))(2)(-) is anomalously higher than those of Au(BO(2))(2)(-) and Cu(BO(2))(2)(-). In quantitative agreement with the experiment, high-level ab initio calculations reveal that spin-orbit coupling (SOC) lowers the VDE of Au(BO(2))(2)(-) significantly. The sizable magnitude of about 0.5 eV of SOC effect on the VDE of Au(BO(2))(2)(-) demonstrates that SOC plays an important role in the electronic structure of gold hyperhalogens. This study represents a new paradigm for relativistic electronic structure calculations for the one-electron-removal process of ionic Au(I)L(2) complexes, which is characterized by a substantial SOC effect.
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Affiliation(s)
- Hui Chen
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing 100190 (China).
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29
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Chen Q, Zhai HJ, Li SD, Wang LS. On the structures and bonding in boron-gold alloy clusters: B6Aun−and B6Aun(n= 1−3). J Chem Phys 2013; 138:084306. [DOI: 10.1063/1.4792501] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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30
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31
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Liu Y, Dong Y, Guo CX, Cui Z, Zheng L, Li CM. Protein-Directed In Situ Synthesis of Gold Nanoparticles on Reduced Graphene Oxide Modified Electrode for Nonenzymatic Glucose Sensing. ELECTROANAL 2012. [DOI: 10.1002/elan.201200472] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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32
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Affiliation(s)
- Yi Gao
- Laboratory of Physical Biology
and Division of Interfacial Water, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai
201800, China
| | - Xiao Cheng Zeng
- Department
of Chemistry, University of Nebraska−Lincoln, Lincoln, Nebraska
68588, United States
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33
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Asmis KR. Structure characterization of metal oxide clusters by vibrational spectroscopy: possibilities and prospects. Phys Chem Chem Phys 2012; 14:9270-81. [PMID: 22569919 DOI: 10.1039/c2cp40762k] [Citation(s) in RCA: 95] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
This article summarizes the methodological progress that has been made in the vibrational spectroscopy of isolated polynuclear metal oxide clusters, with particular emphasis on free electron laser-based infrared action spectroscopy of gas phase clusters, over the last decade. The possibilities, limitations and prospects of the various experimental approaches are discussed using representative examples from pivotal studies in the field.
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Affiliation(s)
- Knut R Asmis
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, D-14195 Berlin, Germany.
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34
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Ning CG, Xiong XG, Wang YL, Li J, Wang LS. Probing the electronic structure and chemical bonding of the "staple" motifs of thiolate gold nanoparticles: Au(SCH3)2- and Au2(SCH3)3-. Phys Chem Chem Phys 2012; 14:9323-9. [PMID: 22278407 DOI: 10.1039/c2cp23490d] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Thiolate-protected gold nanoparticles have been found recently to be coordinated by the so-called "staple" bonding motifs, consisting of quasi-linear [RS-Au-SR] and V-shaped [RS-Au-(SR)-Au-SR] units, which carry a negative charge formally. Using photoelectron spectroscopy (PES) in conjunction with ab initio calculations, we have investigated the electronic structure and chemical bonding of the simplest staples with R = CH(3): Au(SCH(3))(2)(-) and Au(2)(SCH(3))(3)(-), which were produced by electrospray ionization. PES data of the two Au-thiolate complexes are obtained both at room temperature (RT) and 20 K. The temperature-dependent study reveals significant spectral broadening at RT, in agreement with theoretical predictions of multiple conformations due to the different orientations of the -SCH(3) groups. The Au-S bonds in Au(n)(SCH(3))(n+1)(-) (n = 1, 2) are shown to be covalent via a variety of chemical bonding analyses. The strong Au-thiolate bonding and the stability of the Au-thiolate complexes are consistent with their ubiquity as staples for gold nanoparticles and on gold surfaces.
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Affiliation(s)
- Chuan-Gang Ning
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, USA
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35
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Experimental and theory studies of the oxidation reaction of neutral gold carbonyl clusters in the gas phase. Catal Today 2011. [DOI: 10.1016/j.cattod.2011.01.047] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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36
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Jung J, Kim H, Kim JC, Park MH, Han YK. Gold behaves as hydrogen in the intermolecular self-interaction of metal aurides MAu4 (M = Ti, Zr, and Hf). Chem Asian J 2011; 6:868-72. [PMID: 21225974 DOI: 10.1002/asia.201000742] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2010] [Indexed: 11/06/2022]
Abstract
We performed density functional calculations to examine the intermolecular self-interaction of metal tetraauride MAu(4) (M = Ti, Zr, and Hf) clusters. We found that the metal auride clusters have strong dimeric interactions (2.8-3.1 eV) and are similar to the metal hydride analogues with respect to structure and bonding nature. Similarly to (MH(4))(2), the (μ-Au)(3) C(s) structures with three three-center two-electron (3c-2e) bonds were found to be the most stable. Natural orbital analysis showed that greater than 96 % of the Au 6s orbital contributes to the 3c-2e bonds, and this predominant s orbital is responsible for the similarity between metal aurides and metal hydrides (>99 % H 1s). The favorable orbital interaction between occupied Au 6s and unoccupied metal d orbitals leads to a stronger dimeric interaction for MAu(4)-MAu(4) than the interaction for MH(4)-MH(4). There is a strong relationship between the dimeric interaction energy and the chemical hardness of its monomer for (MAu(4))(2) and (MH(4))(2).
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Affiliation(s)
- Jaehoon Jung
- Corporate R&D, LG Chem., Ltd. Research Park, Daejeon 305-380, Republic of Korea
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37
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Pei Y, Shao N, Li H, Jiang DE, Zeng XC. Hollow polyhedral structures in small gold-sulfide clusters. ACS NANO 2011; 5:1441-1449. [PMID: 21271741 DOI: 10.1021/nn103217z] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Using ab initio methods, we investigate the structural evolution of a family of gold-sulfide cluster anions (Au(m)S(n)(-)). We show that this family of clusters exhibits simple size-evolution rules and novel hollow polyhedron structures. The highly stable Au(m)S(n)(-) species such as Au(6)S(4)(-), Au(9)S(5)(-), Au(9)S(6)(-), Au(10)S(6)(-), Au(11)S(6)(-), Au(12)S(8)(-), and Au(13)S(8)(-) detected in the recent ion mobility mass spectrometry experiment of Au(25)(SCH(2)CH(2)Ph)(18) (Angel et al. ACS Nano2010, 4, 4691) are found to possess either quasi-tetrahedron, pyramidal, quasi-triangular prism, or quasi-cuboctahedron structures. The formation of these polyhedron structures are attributed to the high stability of the S-Au-S structural unit. A unique "edge-to-face" growth mechanism is proposed to understand the structural evolution of the small Au(m)S(n)(-) cluster. A 3:2 ratio rule of Au/S is suggested for the formation of a hollow polyhedron structure among small-sized Au(m)S(n) clusters.
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Affiliation(s)
- Yong Pei
- Department of Chemistry and Nebraska Center for Materials and Nanoscience, University of Nebraska-Lincoln, Lincoln, Nebraska 68588, USA
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38
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Experimental and theoretical study of the reactions of iron and manganese oxides with dinitrogen in a cryogenic matrix. Chem Phys Lett 2011. [DOI: 10.1016/j.cplett.2011.01.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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39
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Huang H, Qu C, Liu X, Huang S, Xu Z, Liao B, Zeng Y, Chu PK. Preparation of controllable core-shell gold nanoparticles and its application in detection of silver ions. ACS APPLIED MATERIALS & INTERFACES 2011; 3:183-190. [PMID: 21250641 DOI: 10.1021/am101034h] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
We report a novel shell technique to prepare controllable core-shell nanoparticles. In this technique, the shell is formed when the core reacts with metal ions and Na(2)S(2)O(3) and the size of the core and thickness of the shell can be controlled. Transmission electron microscopy and X-ray diffraction reveal that the shell consists of insoluble complex salts comprising Au(2)S, AuAgS, and Ag(3)AuS(2). The resulting core-shell nanoparticles obtained at different reaction stages demonstrate that the formation of Au(2)S, AuAgS, and Ag(3)AuS(2) shell proceeds from the outside. The morphological evolution of the particles changes significantly with reaction time demonstrating that formation of the shell results from diffusion in the solid shell. The core-shell nanoparticles produced by this technique can be used as nanosensors to detect Ag(+) in aqueous media with high selectivity and sensitivity. The excellent selectivity for Ag(+) is demonstrated by comparing the response to other metal ions. In addition, our evaluation indicates that gold nanorods offer higher sensitivity than gold nanospheres.
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Affiliation(s)
- Haowen Huang
- Key Laboratory of Theoretical Chemistry and Molecular Simulation of Ministry of Education, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology , Xiangtan, 411201, China.
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Liu HT, Xiong XG, Dau PD, Wang YL, Li J, Wang LS. The mixed cyanide halide Au(i) complexes, [XAuCN]− (X = F, Cl, Br, and I): evolution from ionic to covalent bonding. Chem Sci 2011. [DOI: 10.1039/c1sc00487e] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
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41
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Zhai HJ, Wang LS. Probing the electronic structure of early transition metal oxide clusters: Molecular models towards mechanistic insights into oxide surfaces and catalysis. Chem Phys Lett 2010. [DOI: 10.1016/j.cplett.2010.10.001] [Citation(s) in RCA: 92] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Zhai HJ, Miao CQ, Li SD, Wang LS. On the Analogy of B−BO and B−Au Chemical Bonding in B11O− and B10Au− Clusters. J Phys Chem A 2010; 114:12155-61. [DOI: 10.1021/jp108668t] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Hua-Jin Zhai
- Institute of Molecular Sciences, Shanxi University, Taiyuan 030006, People’s Republic of China, Institute of Materials Science and Department of Chemistry, Xinzhou Teachers’ University, Xinzhou 034000, Shanxi, People’s Republic of China, and Department of Chemistry, Brown University, Providence, Rhode Island 02912, United States
| | - Chang-Qing Miao
- Institute of Molecular Sciences, Shanxi University, Taiyuan 030006, People’s Republic of China, Institute of Materials Science and Department of Chemistry, Xinzhou Teachers’ University, Xinzhou 034000, Shanxi, People’s Republic of China, and Department of Chemistry, Brown University, Providence, Rhode Island 02912, United States
| | - Si-Dian Li
- Institute of Molecular Sciences, Shanxi University, Taiyuan 030006, People’s Republic of China, Institute of Materials Science and Department of Chemistry, Xinzhou Teachers’ University, Xinzhou 034000, Shanxi, People’s Republic of China, and Department of Chemistry, Brown University, Providence, Rhode Island 02912, United States
| | - Lai-Sheng Wang
- Institute of Molecular Sciences, Shanxi University, Taiyuan 030006, People’s Republic of China, Institute of Materials Science and Department of Chemistry, Xinzhou Teachers’ University, Xinzhou 034000, Shanxi, People’s Republic of China, and Department of Chemistry, Brown University, Providence, Rhode Island 02912, United States
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43
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Willis M, Götz M, Kandalam AK, Ganteför GF, Jena P. Hyperhalogens: Discovery of a New Class of Highly Electronegative Species. Angew Chem Int Ed Engl 2010; 49:8966-70. [DOI: 10.1002/anie.201002212] [Citation(s) in RCA: 134] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Willis M, Götz M, Kandalam AK, Ganteför GF, Jena P. Hyperhalogene: eine neue Klasse stark elektronegativer Verbindungen. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.201002212] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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45
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Pakiari AH, Jamshidi Z. Nature and Strength of M−S Bonds (M = Au, Ag, and Cu) in Binary Alloy Gold Clusters. J Phys Chem A 2010; 114:9212-21. [DOI: 10.1021/jp100423b] [Citation(s) in RCA: 142] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- A. H. Pakiari
- Chemistry Department College of Sciences, Shiraz University, P.O. Box 71454, Shiraz, Iran, and Chemistry and Chemical Engineering Research Center of Iran, P.O. Box 14335-186, Tehran, Iran
| | - Z. Jamshidi
- Chemistry Department College of Sciences, Shiraz University, P.O. Box 71454, Shiraz, Iran, and Chemistry and Chemical Engineering Research Center of Iran, P.O. Box 14335-186, Tehran, Iran
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Abstract
Gold is known to be the noblest of all metals because of the relativistic stabilization of its outer 6s orbital. The relativistic effects also lead to destabilization of the 5d orbitals, reducing the 6s-5d energy gap and enhancing s-d hybridization. Therefore, in contrast to its lighter congeners, gold exhibits significant covalent bonding characters and a remarkable repertoire of chemistry, which are increasingly being exploited in catalysis and nanotechnology. This Perspective presents a brief account of recent experimental efforts in the author's laboratory using photoelectron spectroscopy that lead to direct observations of covalent bonding in several relatively simple Au compounds: Au oxides (AuO(-) and AuO(2)(-)), sulfides (AuS(-) and AuS(2)(-)), and the well-known Au(CN)(2)(-) complex. In a series of Au-Si and Au-B mixed clusters, it has also been found that gold atoms behave like H atoms, forming auro-silicon and auro-boron clusters with strong covalent bonding, analogous to the corresponding silicon and boron hydrides, such as the tetrahedral auro-silane (SiAu(4)) versus silane (SiH(4)).
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Affiliation(s)
- Lai-Sheng Wang
- Department of Chemistry, Brown University, Providence, RI 02912, USA.
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47
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Höckendorf RF, Cao Y, Beyer MK. Gas-Phase Ion Chemistry of Small Gold Cluster Anions. Organometallics 2010. [DOI: 10.1021/om100228y] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Robert F. Höckendorf
- Institut für Chemie, Sekretariat C4, Technische Universität Berlin, Strasse des 17. Juni 135, 10623 Berlin, Germany
- Institut für Physikalische Chemie, Christian-Albrechts-Universität zu Kiel, Olshausenstrasse 40, 24098 Kiel, Germany
| | - Yali Cao
- Institut für Chemie, Sekretariat C4, Technische Universität Berlin, Strasse des 17. Juni 135, 10623 Berlin, Germany
- Institut für Physikalische Chemie, Christian-Albrechts-Universität zu Kiel, Olshausenstrasse 40, 24098 Kiel, Germany
| | - Martin K. Beyer
- Institut für Chemie, Sekretariat C4, Technische Universität Berlin, Strasse des 17. Juni 135, 10623 Berlin, Germany
- Institut für Physikalische Chemie, Christian-Albrechts-Universität zu Kiel, Olshausenstrasse 40, 24098 Kiel, Germany
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48
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Wang YL, Wang XB, Xing XP, Wei F, Li J, Wang LS. Photoelectron Imaging and Spectroscopy of MI2− (M = Cs, Cu, Au): Evolution from Ionic to Covalent Bonding. J Phys Chem A 2010; 114:11244-51. [DOI: 10.1021/jp103173d] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Yi-Lei Wang
- Department of Chemistry & Key Laboratory of Organic Optoelectronics and Molecular Engineering of Ministry of Education, Tsinghua University, Beijing 100084, China, Department of Physics, Washington State University, 2710 University Drive, Richland, Washington 99354, Chemical & Materials Sciences Division, Pacific Northwest National Laboratory, MS K8-88, P.O. Box 999, Richland, Washington 99352, and Department of Chemistry, Brown University, Providence, Rhode Island 02912
| | - Xue-Bin Wang
- Department of Chemistry & Key Laboratory of Organic Optoelectronics and Molecular Engineering of Ministry of Education, Tsinghua University, Beijing 100084, China, Department of Physics, Washington State University, 2710 University Drive, Richland, Washington 99354, Chemical & Materials Sciences Division, Pacific Northwest National Laboratory, MS K8-88, P.O. Box 999, Richland, Washington 99352, and Department of Chemistry, Brown University, Providence, Rhode Island 02912
| | - Xiao-Peng Xing
- Department of Chemistry & Key Laboratory of Organic Optoelectronics and Molecular Engineering of Ministry of Education, Tsinghua University, Beijing 100084, China, Department of Physics, Washington State University, 2710 University Drive, Richland, Washington 99354, Chemical & Materials Sciences Division, Pacific Northwest National Laboratory, MS K8-88, P.O. Box 999, Richland, Washington 99352, and Department of Chemistry, Brown University, Providence, Rhode Island 02912
| | - Fan Wei
- Department of Chemistry & Key Laboratory of Organic Optoelectronics and Molecular Engineering of Ministry of Education, Tsinghua University, Beijing 100084, China, Department of Physics, Washington State University, 2710 University Drive, Richland, Washington 99354, Chemical & Materials Sciences Division, Pacific Northwest National Laboratory, MS K8-88, P.O. Box 999, Richland, Washington 99352, and Department of Chemistry, Brown University, Providence, Rhode Island 02912
| | - Jun Li
- Department of Chemistry & Key Laboratory of Organic Optoelectronics and Molecular Engineering of Ministry of Education, Tsinghua University, Beijing 100084, China, Department of Physics, Washington State University, 2710 University Drive, Richland, Washington 99354, Chemical & Materials Sciences Division, Pacific Northwest National Laboratory, MS K8-88, P.O. Box 999, Richland, Washington 99352, and Department of Chemistry, Brown University, Providence, Rhode Island 02912
| | - Lai-Sheng Wang
- Department of Chemistry & Key Laboratory of Organic Optoelectronics and Molecular Engineering of Ministry of Education, Tsinghua University, Beijing 100084, China, Department of Physics, Washington State University, 2710 University Drive, Richland, Washington 99354, Chemical & Materials Sciences Division, Pacific Northwest National Laboratory, MS K8-88, P.O. Box 999, Richland, Washington 99352, and Department of Chemistry, Brown University, Providence, Rhode Island 02912
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49
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Huang W, Zhai HJ, Wang LS. Probing the Interactions of O2 with Small Gold Cluster Anions (Aun−, n = 1−7): Chemisorption vs Physisorption. J Am Chem Soc 2010; 132:4344-51. [DOI: 10.1021/ja910401x] [Citation(s) in RCA: 112] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Wei Huang
- Department of Chemistry, Brown University, Providence, Rhode Island 02912
| | - Hua-Jin Zhai
- Department of Chemistry, Brown University, Providence, Rhode Island 02912
| | - Lai-Sheng Wang
- Department of Chemistry, Brown University, Providence, Rhode Island 02912
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50
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Tyo EC, Castleman AW, Schröder D, Milko P, Roithova J, Ortega JM, Cinellu MA, Cocco F, Minghetti G. Large effect of a small substitution: competition of dehydration with charge retention and coulomb explosion in gaseous [(bipy(R))Au(mu-O)2Au(bipy(R))]2+ dications. J Am Chem Soc 2010; 131:13009-19. [PMID: 19705830 DOI: 10.1021/ja902773b] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Dinuclear gold(III) clusters with a rhombic Au(2)O(2) core and 2,2'-bipyridyl ligands substituted in the 6-position (bipy(R)) are examined by tandem mass spectrometry. Electrospray ionization of the hexafluorophosphate salts affords the complexes [(bipy(R))Au(mu-O)(2)Au(bipy(R))](2+) as free dications in the gas phase. The fragmentation behavior of the mass-selected dications is probed by means of collision-induced dissociation experiments which reveal an exceptionally pronounced effect of substitution. Thus, for the parent compound with R = H, i.e., [(bipy)Au(mu-O)(2)Au(bipy)](2+), fragmentation at the dicationic stage prevails to result in a loss of neutral H(2)O concomitant with an assumed rollover cyclometalation of the bipyridine ligands. In marked contrast, all complexes with alkyl substituents in the 6-position of the ligands (bipy(R) with R = CH(3), CH(CH(3))(2), CH(2)C(CH(3))(3), and 2,6-C(6)H(3)(CH(3))(2)) as well as the corresponding complex with 6,6'-dimethyl-2,2'-dipyridyl as a ligand exclusively undergo Coulomb explosion to produce two monocationic fragments. It is proposed that the additional steric strain introduced to the central Au(2)O(2) core by the substituents on the bipyridine ligand, in conjunction with the presence of oxidizable C-H bonds in the substituents, crucially affects the subtle balance between dication dissociation under maintenance of the 2-fold charge and Coulomb explosion into two singly charged fragments.
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Affiliation(s)
- Eric C Tyo
- Department of Chemistry, Pennsylvania State University, University Park, Pennsylvania 16802, USA
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