1
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Yao LY, Qin L, Chen Z, Lam J, Yam VWW. Assembly of Luminescent Chiral Gold(I)-Sulfido Clusters via Chiral Self-Sorting. Angew Chem Int Ed Engl 2024; 63:e202316200. [PMID: 38009456 DOI: 10.1002/anie.202316200] [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: 10/26/2023] [Revised: 11/22/2023] [Accepted: 11/23/2023] [Indexed: 11/28/2023]
Abstract
Due to the ubiquity of chirality in nature, chiral self-assembly involving self-sorting behaviors has remained as one of the most important research topics of interests. Herein, starting from a racemic mixture of SEG-based (SEG=SEGPHOS) chlorogold(I) precursors, a unique chiral butterfly-shape hexadecanuclear gold(I) cluster (Au16 ) with different ratios of RSEG and SSEG ligands is obtained via homoleptic and heterochiral self-sorting. More interestingly, by employing different chlorogold(I) precursors of opposite chirality (such as RSEG -Au2 and SBIN -Au2 (BIN=BINAP)), an unprecedented heteroleptic and heterochiral self-sorting strategy has been developed to give a series of heteroleptic chiral decanuclear gold(I) clusters (Au10 ) with propellor-shape structures. Heterochiral and heteroleptic self-sorting have also been observed between enantiomers of homoleptic chiral Au10 clusters to result in the heteroleptic chiral Au10 clusters via cluster-to-cluster transformation. Incorporation of heteroleptic ligands is found to decrease the symmetry from S4 of homoleptic meso Au10 to C2 of heteroleptic chiral Au10 clusters. The chirality has been transferred from the axial chiral ligands and stored in the heteroleptic gold(I) clusters.
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Affiliation(s)
- Liao-Yuan Yao
- Institute of Molecular Functional Materials, State Key Laboratory of Synthetic Chemistry and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P. R. China
- MOE Key Laboratory of Cluster Sciences, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, 8 Liangxiang East Road, Beijing, 102488, P. R. China
| | - Lin Qin
- MOE Key Laboratory of Cluster Sciences, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, 8 Liangxiang East Road, Beijing, 102488, P. R. China
| | - Ziyong Chen
- Institute of Molecular Functional Materials, State Key Laboratory of Synthetic Chemistry and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P. R. China
| | - Jonathan Lam
- Institute of Molecular Functional Materials, State Key Laboratory of Synthetic Chemistry and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P. R. China
| | - Vivian Wing-Wah Yam
- Institute of Molecular Functional Materials, State Key Laboratory of Synthetic Chemistry and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P. R. China
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2
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Yan LL, Yao LY, Ng M, Tang WK, Leung MY, Yam VWW. Stimuli-Induced Reversible Transformation between Decanuclear and Pentanuclear Gold(I) Sulfido Complexes. J Am Chem Soc 2022; 144:19748-19757. [PMID: 36264179 DOI: 10.1021/jacs.2c05946] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Decanuclear and pentanuclear gold(I) sulfido complexes of phenanthrene- and dibenzothiophene-based diphosphine ligands were synthesized and characterized. Unprecedented stimuli-induced reversible transformation between decanuclear and pentanuclear gold(I) sulfido complexes was observed, which could be readily monitored by NMR and UV-vis absorption spectroscopy in solution. Remarkably, the decanuclear gold(I) sulfido complex (Au10-LPh) was found to show a highly reversible transformation process, which is stable for over 10 successive cycles in solution. The stimuli-induced reversible transformation behavior of the gold(I) sulfido complexes was found to depend on the P-P bite distance of the bidentate phosphine ligands.
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Affiliation(s)
- Liang-Liang Yan
- Institute of Molecular Functional Materials, State Key Laboratory of Synthetic Chemistry, and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong 999077, P. R. China
| | - Liao-Yuan Yao
- Institute of Molecular Functional Materials, State Key Laboratory of Synthetic Chemistry, and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong 999077, P. R. China
| | - Maggie Ng
- Institute of Molecular Functional Materials, State Key Laboratory of Synthetic Chemistry, and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong 999077, P. R. China
| | - Wai Kit Tang
- Institute of Molecular Functional Materials, State Key Laboratory of Synthetic Chemistry, and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong 999077, P. R. China
| | - Ming-Yi Leung
- Institute of Molecular Functional Materials, State Key Laboratory of Synthetic Chemistry, and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong 999077, P. R. China
| | - Vivian Wing-Wah Yam
- Institute of Molecular Functional Materials, State Key Laboratory of Synthetic Chemistry, and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong 999077, P. R. China
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3
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Yan LL, Yao LY, Ng M, Yam VWW. Stimuli-Responsive and Structure-Adaptive Three-Dimensional Gold(I) Cluster Cages Constructed via "De-aurophilic" Interaction Strategy. J Am Chem Soc 2021; 143:19008-19017. [PMID: 34732047 DOI: 10.1021/jacs.1c07971] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Self-assembly of three-dimensional (3D) metallosupramolecular cages has drawn increasing attention for their potential to interconvert between different architectures due to the dynamic and reversible features of the coordination bond. These supramolecular transformations can provide unique approaches for the construction of stimuli-responsive supramolecular model systems to mimic biological transformation processes. While gold(I) clusters have attracted much interest due to their propensity to exhibit aurophilic interactions, the construction of 3D gold(I) cluster cages has remained a challenging and daunting task. Here, we proposed a "de-aurophilic" interaction strategy, which involves the prevention of aurophilic interaction formation between the basic [(μ3-S)Au3]+ units, to construct 3D gold(I) cluster cages. Through the judicious design of diphosphine ligands, an unprecedented class of gold(I) cluster cages with adaptive structures has been constructed. These gold(I) cluster cages are found to show intriguing stimuli-responsive structure transformation and interconversion. This work not only provides a strategy for the design and construction of novel 3D supramolecular cages based on cluster nodes but also offers a paradigm to study the stimuli-responsive structural interconversion between the unique structures of these gold(I) cluster cages.
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Affiliation(s)
- Liang-Liang Yan
- Institute of Molecular Functional Materials and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P.R. China
| | - Liao-Yuan Yao
- Institute of Molecular Functional Materials and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P.R. China
| | - Maggie Ng
- Institute of Molecular Functional Materials and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P.R. China
| | - Vivian Wing-Wah Yam
- Institute of Molecular Functional Materials and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P.R. China
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4
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Niedner‐Schatteburg G, Kappes MM. Advancing Inorganic Coordination Chemistry by Spectroscopy of Isolated Molecules: Methods and Applications. Chemistry 2021; 27:15027-15042. [PMID: 34636096 PMCID: PMC8596414 DOI: 10.1002/chem.202102815] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Indexed: 12/14/2022]
Abstract
A unique feature of the work carried out in the Collaborative Research Center 3MET continues to be its emphasis on innovative, advanced experimental methods which hyphenate mass-selection with further analytical tools such as laser spectroscopy for the study of isolated molecular ions. This allows to probe the intrinsic properties of the species of interest free of perturbing solvent or matrix effects. This review explains these methods and uses examples from past and ongoing 3MET studies of specific classes of multicenter metal complexes to illustrate how coordination chemistry can be advanced by applying them. As a corollary, we will show how the challenges involved in providing well-defined, for example monoisomeric, samples of the molecular ions have helped to further improve the methods themselves thus also making them applicable to many other areas of chemistry.
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Affiliation(s)
| | - Manfred M. Kappes
- Institute of Physical Chemistry and Institute of NanotechnologyKarlsruhe Institute of Technology (KIT)76128KarlsruheGermany
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5
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Yao LY, Yam VWW. Dual Emissive Gold(I)-Sulfido Cluster Framework Capable of Benzene-Cyclohexane Separation in the Solid State Accompanied by Luminescence Color Changes. J Am Chem Soc 2021; 143:2558-2566. [PMID: 33533605 DOI: 10.1021/jacs.0c11891] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A decanuclear gold(I)-sulfido complex, [(LH)4Au10S4]Cl2 (LH-Au10S4-Cl, where LH = 4,5-bis(diphenylphosphanyl)-2H-1,2,3-triazole), assembled from the reaction of H2S with the chlorogold(I) precursor obtained from the click reaction of [dppa(AuCl)2] (where dppa = 1,2-bis(diphenylphosphino)acetylene) with NaN3, is shown to display a bright dual green and red emission in the solid state. Single crystal X-ray diffraction (SCXRD) studies indicate a gold(I) cluster-based framework assembled through intermolecular halogen···hydrogen bonds as well as other weak interactions. The framework of LH-Au10S4-Cl is found to display high stability toward solvent molecules, with capability to encapsulate solvent molecules, such as benzene and cyclohexane, inside the crystal lattice voids via a single-crystal-to-single-crystal (SCSC) transformation. With different degrees of influence on the dual green and red emission, crystalline solids of LH-Au10S4-Cl exhibit remarkable solvatochromic luminescence in the presence of benzene and cyclohexane. Notably, due to the size confinement of the lattice cavities, the LH-Au10S4-Cl solids exhibit a high selectivity (>95%) toward benzene in a mixture of equimolar concentration of benzene and cyclohexane. This work has demonstrated the promising capability of gold(I)-sulfido cluster frameworks to serve as luminescent functional materials for the separation of benzene and cyclohexane.
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Affiliation(s)
- Liao-Yuan Yao
- Institute of Molecular Functional Materials, State Key Laboratory of Synthetic Chemistry and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P.R. China
| | - Vivian Wing-Wah Yam
- Institute of Molecular Functional Materials, State Key Laboratory of Synthetic Chemistry and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P.R. China
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6
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Yao L, Chen Z, Zhang K, Yam VW. Heterochiral Self‐Discrimination‐Driven Supramolecular Self‐Assembly of Decanuclear Gold(I)‐Sulfido Complexes into 2D Nanostructures with Chiral Anions‐Tuned Morphologies. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202009728] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Liao‐Yuan Yao
- Institute of Molecular Functional Materials and Department of Chemistry The University of Hong Kong Pokfulam Road Hong Kong P. R. China
| | - Zhen Chen
- Institute of Molecular Functional Materials and Department of Chemistry The University of Hong Kong Pokfulam Road Hong Kong P. R. China
| | - Kaka Zhang
- Institute of Molecular Functional Materials and Department of Chemistry The University of Hong Kong Pokfulam Road Hong Kong P. R. China
| | - Vivian Wing‐Wah Yam
- Institute of Molecular Functional Materials and Department of Chemistry The University of Hong Kong Pokfulam Road Hong Kong P. R. China
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7
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Yao L, Chen Z, Zhang K, Yam VW. Heterochiral Self‐Discrimination‐Driven Supramolecular Self‐Assembly of Decanuclear Gold(I)‐Sulfido Complexes into 2D Nanostructures with Chiral Anions‐Tuned Morphologies. Angew Chem Int Ed Engl 2020; 59:21163-21169. [DOI: 10.1002/anie.202009728] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Indexed: 01/28/2023]
Affiliation(s)
- Liao‐Yuan Yao
- Institute of Molecular Functional Materials and Department of Chemistry The University of Hong Kong Pokfulam Road Hong Kong P. R. China
| | - Zhen Chen
- Institute of Molecular Functional Materials and Department of Chemistry The University of Hong Kong Pokfulam Road Hong Kong P. R. China
| | - Kaka Zhang
- Institute of Molecular Functional Materials and Department of Chemistry The University of Hong Kong Pokfulam Road Hong Kong P. R. China
| | - Vivian Wing‐Wah Yam
- Institute of Molecular Functional Materials and Department of Chemistry The University of Hong Kong Pokfulam Road Hong Kong P. R. China
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8
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Yan LL, Yao LY, Yam VWW. Concentration- and Solvation-Induced Reversible Structural Transformation and Assembly of Polynuclear Gold(I) Sulfido Complexes. J Am Chem Soc 2020; 142:11560-11568. [DOI: 10.1021/jacs.0c04677] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Liang-Liang Yan
- Institute of Molecular Functional Materials and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P. R. China
| | - Liao-Yuan Yao
- Institute of Molecular Functional Materials and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P. R. China
| | - Vivian Wing-Wah Yam
- Institute of Molecular Functional Materials and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P. R. China
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9
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Kang X, Zhu M. Metal Nanoclusters Stabilized by Selenol Ligands. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2019; 15:e1902703. [PMID: 31482648 DOI: 10.1002/smll.201902703] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Revised: 07/25/2019] [Indexed: 06/10/2023]
Abstract
The past decades have witnessed great advances in controllable synthesis, structure determination, and property investigation of metal nanoclusters. Selenolated nanoclusters, a special branch in the nanocluster family, have attracted great interest in these years. The electronegativity and atomic radius of selenium is different from sulfur, and thus the selenolated nanoclusters are anticipated to display different electronic/geometric structures and distinct chemical/physical properties relative to their thiolated analogues. This review covers the syntheses, structures, and properties of selenolated nanoclusters (including Au, Ag, Cu, and alloy nanoclusters). Ligand effects (between SeR and SR) on nanocluster properties, including optical absorption, stability, and electrochemical properties, are disclosed as well. At the end of the review, a scope for improvements and future perspectives of selenolated nanoclusters is highlighted. The review hopefully opens up new horizons for cluster scientists to synthesize more selenolated nanoclusters with novel structures and properties. This review is based on publications available up to May 2019.
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Affiliation(s)
- 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, Anhui, 230601, 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, Anhui, 230601, China
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10
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A Gold Quartet Framework with Reversible Anisotropic Structural Transformation Accompanied by Luminescence Response. Chem 2019. [DOI: 10.1016/j.chempr.2019.06.012] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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11
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Chu A, Hau FK, Yao L, Yam VW. Synthesis, structural characterization, and photophysical studies of hexanuclear gold(I) chalcogenido complexes. J CHIN CHEM SOC-TAIP 2019. [DOI: 10.1002/jccs.201900211] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Anlea Chu
- Institute of Molecular Functional Materials, Areas of Excellence Scheme, University Grants Committee (Hong Kong) and Department of ChemistryThe University of Hong Kong Pokfulam Road, Hong Kong PR China
| | - Franky Ka‐Wah Hau
- Institute of Molecular Functional Materials, Areas of Excellence Scheme, University Grants Committee (Hong Kong) and Department of ChemistryThe University of Hong Kong Pokfulam Road, Hong Kong PR China
| | - Liao‐Yuan Yao
- Institute of Molecular Functional Materials, Areas of Excellence Scheme, University Grants Committee (Hong Kong) and Department of ChemistryThe University of Hong Kong Pokfulam Road, Hong Kong PR China
| | - Vivian Wing‐Wah Yam
- Institute of Molecular Functional Materials, Areas of Excellence Scheme, University Grants Committee (Hong Kong) and Department of ChemistryThe University of Hong Kong Pokfulam Road, Hong Kong PR China
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12
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Dornsiepen E, Weigend F, Dehnen S. Transition‐Metal‐Induced Rearrangement of [(PhSn)
4
S
6
] Towards Ternary Cu
I
/Sn/S or Cu
II
/Sn/S Clusters. Chemistry 2019; 25:2486-2490. [DOI: 10.1002/chem.201806407] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2018] [Indexed: 11/06/2022]
Affiliation(s)
- Eike Dornsiepen
- Fachbereich Chemie und Wissenschaftliches Zentrum für MaterialwissenschaftenPhilipps-Universität Marburg Hans-Meerwein-Strasse 4 35043 Marburg Germany
| | - Florian Weigend
- Institute of Nanotechnology (INT)Karlsruhe Institute of Technology (KIT) Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
| | - Stefanie Dehnen
- Fachbereich Chemie und Wissenschaftliches Zentrum für MaterialwissenschaftenPhilipps-Universität Marburg Hans-Meerwein-Strasse 4 35043 Marburg Germany
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13
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Yu W, Wang Y, Fuhr O, Fenske D, Dehnen S. [Au 12(PPh 2) 2S 4(L2) 4] 2+ (L2 = 3,4-bis(diphenylphosphino)-2,5-bis(trimethylsilyloxy)furan): an Au 12 unit protected by modified maleic anhydride phosphine ligands. Dalton Trans 2018; 47:1032-1035. [PMID: 29292447 DOI: 10.1039/c7dt04263a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The reaction of the bis(dichlorogold) complex of 2,3-bis(diphenylphosphino)maleic anhydride (L1) with S(SiMe3)2 in the presence of NaBPh4 yields the ionic dodecanuclear cluster compound [Au12(PPh2)2S4(L2)4](BPh4)2 (1). During the formation of 1, the initial ligand L1 is transformed into the doubly sylilated derivative, 3,4-bis(diphenylphosphino)-2,5-bis(trimethylsilyloxy)-furan (L2). The presence of bridging PPh2 groups is a result of the transformation of L1 in the coordination sphere of Au(i). Compound 1 was characterized by single crystal X-ray diffraction and electrospray-ionization (ESI) mass spectrometry.
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Affiliation(s)
- Wen Yu
- Zhejiang University of Science and Technology, School of Biological and Chemical Engineering, Liuhe Road 318, 310023 Hangzhou, Zhejiang, China
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14
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Polgar AM, Weigend F, Zhang A, Stillman MJ, Corrigan JF. A N-Heterocyclic Carbene-Stabilized Coinage Metal-Chalcogenide Framework with Tunable Optical Properties. J Am Chem Soc 2017; 139:14045-14048. [DOI: 10.1021/jacs.7b09025] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Alexander M. Polgar
- Department
of Chemistry, The University of Western Ontario, London, Ontario N6A 5B7, Canada
| | - Florian Weigend
- Institut
für Nanotechnologie, Karlsruher Institut für Technologie, Hermann-von Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
- Institut
für Physikalische Chemie, Karlsruher Institut für Technologie, Kaiserstr. 12, 76131 Karlsruhe, Germany
| | - Angel Zhang
- Department
of Chemistry, The University of Western Ontario, London, Ontario N6A 5B7, Canada
| | - Martin J. Stillman
- Department
of Chemistry, The University of Western Ontario, London, Ontario N6A 5B7, Canada
| | - John F. Corrigan
- Department
of Chemistry, The University of Western Ontario, London, Ontario N6A 5B7, Canada
- Centre
for Advanced Materials and Biomaterials Research, The University of Western Ontario, London, Ontario N6A 3K7, Canada
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15
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Yao LY, Lee TKM, Yam VWW. Thermodynamic-Driven Self-Assembly: Heterochiral Self-Sorting and Structural Reconfiguration in Gold(I)-Sulfido Cluster System. J Am Chem Soc 2016; 138:7260-3. [PMID: 27248613 DOI: 10.1021/jacs.6b03844] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
By employing chiral precursors, a new class of chiral gold(I)-sulfido clusters with unique structures has been constructed. Interestingly, pure enantiomers of the precursors are found to self-assemble into chiral hexa- and decanuclear clusters sequentially, while a racemic mixture of them has resulted in heterochiral self-sorting of an achiral meso decanuclear cluster. Chirality has determined not only the symmetry and structures but also the photophysical behaviors of these clusters. The racemic mixture of decanuclear clusters undergoes rearrangement and heterochiral self-sorting to give a meso decanuclear cluster. The thermodynamic-driven heterochiral self-sorting of gold(I) clusters provides a means to develop controlled self-assembly that may be of relevance to the understanding of chirality in nature.
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Affiliation(s)
- Liao-Yuan Yao
- Institute of Molecular Functional Materials (Areas of Excellence Scheme, University Grants Committee (Hong Kong)) and Department of Chemistry, The University of Hong Kong , Pokfulam Road, Hong Kong, P. R. China
| | - Terence Kwok-Ming Lee
- Institute of Molecular Functional Materials (Areas of Excellence Scheme, University Grants Committee (Hong Kong)) and Department of Chemistry, The University of Hong Kong , Pokfulam Road, Hong Kong, P. R. China
| | - Vivian Wing-Wah Yam
- Institute of Molecular Functional Materials (Areas of Excellence Scheme, University Grants Committee (Hong Kong)) and Department of Chemistry, The University of Hong Kong , Pokfulam Road, Hong Kong, P. R. China
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16
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Eussner JP, Dehnen S. Bronze, silver and gold: functionalized group 11 organotin sulfide clusters. Chem Commun (Camb) 2015; 50:11385-8. [PMID: 25123147 DOI: 10.1039/c4cc05666c] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The synthesis, properties and reactivity of group 11 organotin sulfide clusters [(R(1)Sn)4(SnCl)2(MPPh3)2S8] (M = Cu, Ag), [(R(3)Sn)10Ag10S20], and [(R(1,3)Sn)2(AuPPh3)2S4] with covalently bound, carbonyl or hydrazine-terminated ligands R(1) = CMe2CH2C(Me)O or R(3) = CMe2CH2C(Me)NNH2 are reported.
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Affiliation(s)
- Jens P Eussner
- Philipps-Universität Marburg, Fachbereich Chemie and Wissenschaftliches Zentrum für Materialwissenschaften (WZMW), Hans-Meerwein-Straße, D-35043 Marburg, Germany.
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17
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He X, Lam WH, Cheng ECC, Yam VWW. Cleavage of a PN Bond in a Urea-Containing (Ph2P(R)PPh2)-Bridged Dinuclear Gold(I) Thiolate Complex by Fluoride and a Mechanistic Insight. Chemistry 2015; 21:8447-54. [DOI: 10.1002/chem.201500493] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2015] [Indexed: 12/22/2022]
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18
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Yao LY, Yam VWW. Photoinduced Isomerization-Driven Structural Transformation Between Decanuclear and Octadecanuclear Gold(I) Sulfido Clusters. J Am Chem Soc 2015; 137:3506-9. [DOI: 10.1021/jacs.5b01676] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Liao-Yuan Yao
- Institute of Molecular Functional
Materials and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P. R. China
| | - Vivian Wing-Wah Yam
- Institute of Molecular Functional
Materials and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P. R. China
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19
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Yu W, Guggolz L, Fuhr O, Fenske D, Dehnen S. Syntheses, structures and theoretical investigations of [Au10S2(PPh2)2(dppma2)4(dppma3)]·[Au6S2(dppma2)2(dppma3)]. Dalton Trans 2015; 44:9363-6. [DOI: 10.1039/c5dt01360g] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
The synthesis, crystal structure and theoretical studies of a high-nuclear gold(i) complex stabilized by bridging aromatic phosphane ligands are reported.
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Affiliation(s)
- Wen Yu
- Fachbereich Chemie and Wissenschaftliches Zentrum für Materialwissenschaften (WZMW)
- Philipps-Universität Marburg
- 35043 Marburg
- Germany
- Institut für Anorganische Chemie
| | - Lukas Guggolz
- Fachbereich Chemie and Wissenschaftliches Zentrum für Materialwissenschaften (WZMW)
- Philipps-Universität Marburg
- 35043 Marburg
- Germany
| | - Olaf Fuhr
- Institut für Nanotechnologie (INT) und Karlsruher Nano-Micro-Facility (KNMF)
- Karlsruher Institut für Technologie (KIT)
- 76344 Eggenstein-Leopoldshafen
- Germany
- Lehn Institute of Functional Materials (LIFM)
| | - Dieter Fenske
- Institut für Anorganische Chemie
- Karlsruher Institut für Technologie (KIT)
- 76131 Karlsruhe
- Germany
- Institut für Nanotechnologie (INT) und Karlsruher Nano-Micro-Facility (KNMF)
| | - Stefanie Dehnen
- Fachbereich Chemie and Wissenschaftliches Zentrum für Materialwissenschaften (WZMW)
- Philipps-Universität Marburg
- 35043 Marburg
- Germany
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Hau FKW, Lee TKM, Cheng ECC, Au VKM, Yam VWW. Luminescence color switching of supramolecular assemblies of discrete molecular decanuclear gold(I) sulfido complexes. Proc Natl Acad Sci U S A 2014; 111:15900-5. [PMID: 25362049 PMCID: PMC4234610 DOI: 10.1073/pnas.1418824111] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A series of discrete decanuclear gold(I) μ(3)-sulfido complexes with alkyl chains of various lengths on the aminodiphosphine ligands, [Au(10){Ph(2)PN(C(n)H2(n+1))PPh(2)}(4)(μ(3)-S)(4)](ClO(4))(2), has been synthesized and characterized. These complexes have been shown to form supramolecular nanoaggregate assemblies upon solvent modulation. The photoluminescence (PL) colors of the nanoaggregates can be switched from green to yellow to red by varying the solvent systems from which they are formed. The PL color variation was investigated and correlated with the nanostructured morphological transformation from the spherical shape to the cube as observed by transmission electron microscopy and scanning electron microscopy. Such variations in PL colors have not been observed in their analogous complexes with short alkyl chains, suggesting that the long alkyl chains would play a key role in governing the supramolecular nanoaggregate assembly and the emission properties of the decanuclear gold(I) sulfido complexes. The long hydrophobic alkyl chains are believed to induce the formation of supramolecular nanoaggregate assemblies with different morphologies and packing densities under different solvent systems, leading to a change in the extent of Au(I)-Au(I) interactions, rigidity, and emission properties.
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Affiliation(s)
- Franky Ka-Wah Hau
- Institute of Molecular Functional Materials [Areas of Excellence Scheme, University Grants Committee (Hong Kong)] and Department of Chemistry, The University of Hong Kong, Hong Kong, People's Republic of China
| | - Terence Kwok-Ming Lee
- Institute of Molecular Functional Materials [Areas of Excellence Scheme, University Grants Committee (Hong Kong)] and Department of Chemistry, The University of Hong Kong, Hong Kong, People's Republic of China
| | - Eddie Chung-Chin Cheng
- Institute of Molecular Functional Materials [Areas of Excellence Scheme, University Grants Committee (Hong Kong)] and Department of Chemistry, The University of Hong Kong, Hong Kong, People's Republic of China
| | - Vonika Ka-Man Au
- Institute of Molecular Functional Materials [Areas of Excellence Scheme, University Grants Committee (Hong Kong)] and Department of Chemistry, The University of Hong Kong, Hong Kong, People's Republic of China
| | - Vivian Wing-Wah Yam
- Institute of Molecular Functional Materials [Areas of Excellence Scheme, University Grants Committee (Hong Kong)] and Department of Chemistry, The University of Hong Kong, Hong Kong, People's Republic of China
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Yao LY, Hau FKW, Yam VWW. Addition Reaction-Induced Cluster-to-Cluster Transformation: Controlled Self-Assembly of Luminescent Polynuclear Gold(I) μ3-Sulfido Clusters. J Am Chem Soc 2014; 136:10801-6. [DOI: 10.1021/ja505599v] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Liao-Yuan Yao
- Institute of Molecular Functional
Materials and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P. R. China
| | - Franky Ka-Wah Hau
- Institute of Molecular Functional
Materials and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P. R. China
| | - Vivian Wing-Wah Yam
- Institute of Molecular Functional
Materials and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P. R. China
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Cheng ECC, Lo WY, Lee TKM, Zhu N, Yam VWW. Synthesis, Characterization, and Luminescence Studies of Discrete Polynuclear Gold(I) Sulfido and Selenido Complexes with Intramolecular Aurophilic Contacts. Inorg Chem 2014; 53:3854-63. [DOI: 10.1021/ic500215d] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Eddie Chung-Chin Cheng
- Institute of Molecular Functional
Materials [Areas of Excellence Scheme, University Grants Committee
(Hong Kong)], and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, PR China
| | - Wing-Yin Lo
- Institute of Molecular Functional
Materials [Areas of Excellence Scheme, University Grants Committee
(Hong Kong)], and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, PR China
| | - Terence Kwok-Ming Lee
- Institute of Molecular Functional
Materials [Areas of Excellence Scheme, University Grants Committee
(Hong Kong)], and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, PR China
| | - Nianyong Zhu
- Institute of Molecular Functional
Materials [Areas of Excellence Scheme, University Grants Committee
(Hong Kong)], and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, PR China
| | - Vivian Wing-Wah Yam
- Institute of Molecular Functional
Materials [Areas of Excellence Scheme, University Grants Committee
(Hong Kong)], and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, PR China
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Keter F, Guzei IA, Nell M, Zyl WV, Darkwa J. Phosphinogold(I) dithiocarbamate complexes: effect of the nature of phosphine ligand on anticancer properties. Inorg Chem 2014; 53:2058-67. [PMID: 24476103 PMCID: PMC3993921 DOI: 10.1021/ic4025926] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2013] [Indexed: 02/07/2023]
Abstract
The reactions of potassium salts of the dithiocarbamates L {where L = pyrazolyldithiocarbamate (L1), 3,5-dimethylpyrazolyldithiocarbamate (L2), or indazolyldithiocarbamate (L3)} with the gold precursors [AuCl(PPh3)], [Au2Cl2(dppe)], [Au2Cl2(dppp)], or [Au2Cl2(dpph)] lead to the new gold(I) complexes [AuL(PPh3)] (1-3), [Au2L2(dppe)] (4-6), [(Au2L2)(dppp)] (7-9), and [Au2(L)2(dpph)] (10-12) {where dppe = 1,2-bis(diphenylphosphino)ethane, dppp = 1,3-bis(diphenylphosphino)propane, and dpph = 1,6-bis(diphenylphosphino)hexane}. These gold compounds were characterized by a combination of NMR and infrared spectroscopy, microanalysis, and mass spectrometry; and in selected cases by single-crystal X-ray crystallography. Compounds 4-6, which have dppe ligands, are unstable in solution for prolonged periods, with 4 readily transforming to the Au18 cluster [Au18S8(dppe)6]Cl2 (4a) in dichloromethane. Compounds 1-3 and 7-12 are all active against human cervical epithelioid carcinoma (HeLa) cells, but the most active compounds are 10 and 11, with IC50 values of 0.51 μM and 0.14 μM, respectively. Compounds 10 and 11 are more selective toward HeLa cells than they are toward normal cells, with selectivities of 25.0 and 70.5, respectively. Further tests, utilizing the 60-cell-line Developmental Therapeutics Program at the National Cancer Institute (U.S.A.), showed 10 and 11 to be active against nine other types of cancers.
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Affiliation(s)
- Frankline
K. Keter
- Department
of Chemistry, University of Johannesburg, P.O. Box 524, Auckland
Park 2006, South Africa
- Advanced
Materials Division, Mintek, Private Bag X3015, Randburg 2125, South Africa
| | - Ilia A. Guzei
- Department
of Chemistry, University of Johannesburg, P.O. Box 524, Auckland
Park 2006, South Africa
- Department
of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Margo Nell
- Department
of Pharmacology, University of Pretoria, Pretoria 0002, South Africa
| | - Werner
E. van Zyl
- Department
of Chemistry, University of Johannesburg, P.O. Box 524, Auckland
Park 2006, South Africa
| | - James Darkwa
- Department
of Chemistry, University of Johannesburg, P.O. Box 524, Auckland
Park 2006, South Africa
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Derivatives of Bis(diphenylphosphino)maleic Anhydride as Ligands in Polynuclear Gold(I) Complexes. J CLUST SCI 2012. [DOI: 10.1007/s10876-012-0487-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Jin R, Zhu Y, Qian H. Quantum-sized gold nanoclusters: bridging the gap between organometallics and nanocrystals. Chemistry 2011; 17:6584-93. [PMID: 21590819 DOI: 10.1002/chem.201002390] [Citation(s) in RCA: 127] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
This Concept article provides an elementary discussion of a special class of large-sized gold compounds, so-called Au nanoclusters, which lies in between traditional organogold compounds (e.g., few-atom complexes, <1 nm) and face-centered cubic (fcc) crystalline Au nanoparticles (typically >2 nm). The discussion is focused on the relationship between them, including the evolution from the Au⋅⋅⋅Au aurophilic interaction in Au(I) complexes to the direct Au-Au bond in clusters, and the structural transformation from the fcc structure in nanocrystals to non-fcc structures in nanoclusters. Thiolate-protected Au(n)(SR)(m) nanoclusters are used as a paradigm system. Research on such nanoclusters has achieved considerable advances in recent years and is expected to flourish in the near future, which will bring about exciting progress in both fundamental scientific research and technological applications of nanoclusters of gold and other metals.
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Affiliation(s)
- Rongchao Jin
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, PA 15213, USA.
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Yam VWW, Wong KMC. Luminescent metal complexes of d6, d8 and d10 transition metal centres. Chem Commun (Camb) 2011; 47:11579-92. [DOI: 10.1039/c1cc13767k] [Citation(s) in RCA: 433] [Impact Index Per Article: 33.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Lee TKM, Zhu N, Yam VWW. An Unprecedented Luminescent Polynuclear Gold(I) μ3-Sulfido Cluster With a Thiacrown-like Architecture. J Am Chem Soc 2010; 132:17646-8. [DOI: 10.1021/ja1055017] [Citation(s) in RCA: 94] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Terence Kwok-Ming Lee
- Institute of Molecular Functional Materials and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P. R. China
| | - Nianyong Zhu
- Institute of Molecular Functional Materials and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P. R. China
| | - Vivian Wing-Wah Yam
- Institute of Molecular Functional Materials and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P. R. China
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Ganesamoorthy C, Balakrishna MS, Mague JT. Group 11 Metal Chemistry of a Tetradentate Ligand, Phenylene-1,4-diaminotetra(phosphonite), p-C6H4[N{P(OC6H4OMe-o)2}2]2. Inorg Chem 2009; 48:3768-82. [DOI: 10.1021/ic900085e] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Chelladurai Ganesamoorthy
- Phosphorus Laboratory, Department of Chemistry, Indian Institute of Technology Bombay, Mumbai 400 076, India
| | - Maravanji S. Balakrishna
- Phosphorus Laboratory, Department of Chemistry, Indian Institute of Technology Bombay, Mumbai 400 076, India
| | - Joel T. Mague
- Department of Chemistry, Tulane University, New Orleans, Louisiana 70118
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Ganesamoorthy C, Balakrishna MS, Mague JT, Tuononen HM. Bi-, tetra-, and hexanuclear AuI and binuclear AgI complexes and AgI coordination polymers containing phenylaminobis(phosphonite), PhN{P(OC6H4OMe-o)2}2, and pyridyl ligands. Inorg Chem 2008; 47:2764-76. [PMID: 18269233 DOI: 10.1021/ic702133f] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The reactions of phenylaminobis(phosphonite), PhN{P(OC6H4OMe-o)2}2 (1) (PNP), with [AuCl(SMe2)] in appropriate ratios, afford the bi- and mononuclear complexes, [(AuCl)2(micro-PNP)] (2) and [(AuCl)(PNP)]2 (3) in good yield. Treatment of 2 with 2 equiv of AgX (X = OTf or ClO4) followed by the addition of 1 or 2,2'-bipyridine affords [Au2(micro-PNP)2](OTf)2 (4) and [Au2(C10H8N2)2(micro-PNP)](ClO4)2 (5), respectively. Similarly, the macrocycles [Au4(C4H4N2)2(micro-PNP)2](ClO4)4 (6), [Au4(C10H8N2)2(micro-PNP)2](ClO4)4 (7), and [Au6(C3H3N3)2(micro-PNP)3](ClO4)6 (8) are obtained by treating 2 with pyrazine, 4,4'-bipyridine, or 1,3,5-triazine in the presence of AgClO 4. The reaction of 1 with AgOTf in a 1:2 molar ratio produces [Ag2(micro-OTf)2(micro-PNP)] (9). The displacement of triflate ions in 9 by 1 leads to a disubstituted derivative, [Ag2(micro-PNP)3](OTf)2 (10). The equimolar reaction of 1 with AgClO4 in THF affords [Ag2(C4H8O)2(micro-PNP)2](ClO4)2 (11). Treatment of 1 with AgClO4 followed by the addition of 2,2'-bipyridine affords a discrete binuclear complex, [Ag2(C10H8N2)2(micro-PNP)](ClO4)2 (12), whereas similar reactions with 4,4'-bipyridine or pyrazine produce one-dimensional zigzag Ag (I) coordination polymers, [Ag2(C10H8N2)(micro-ClO4)(ClO4)(micro-PNP)]n (13) and [Ag2(C4H4N2)(micro-ClO4)(ClO4)(micro-PNP)]n (14) in good yield. The nature of metal-metal interactions in compounds 2, 4, 5, and 12 was analyzed theoretically by performing HF and CC calculations. The structures of the complexes 2, 4, 5, 7, 9, 12, and 14 are confirmed by single crystal X-ray diffraction studies.
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Affiliation(s)
- Chelladurai Ganesamoorthy
- Phosphorus Laboratory, Department of Chemistry, Indian Institute of Technology, Bombay, Powai, Mumbai 400 076, India
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Tracy JB, Crowe MC, Parker JF, Hampe O, Fields-Zinna CA, Dass A, Murray RW. Electrospray ionization mass spectrometry of uniform and mixed monolayer nanoparticles: Au25[S(CH2)2Ph]18 and Au25[S(CH2)2Ph]18-x(SR)x. J Am Chem Soc 2007; 129:16209-15. [PMID: 18034488 DOI: 10.1021/ja076621a] [Citation(s) in RCA: 176] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
New approaches to electrospray ionization mass spectrometry (ESI-MS)-with exact compositional assignments-of small (Au25) nanoparticles with uniform and mixed protecting organothiolate monolayers are described. The results expand the scope of analysis and reveal a rich chemistry of ionization behavior. ESI-MS of solutions of phenylethanethiolate monolayer-protected gold clusters (MPCs), Au25(SC2Ph)18, containing alkali metal acetate salts (MOAc) produce spectra in which, for Na+, K+, Rb+, and Cs+ acetates, the dominant species are MAu25(SC2Ph)182+ and M2Au25(SC2Ph)182+. Li+ acetates caused ligand loss. This method was extended to the analysis of Au25 MPCs with mixed monolayers, where thiophenolate (-SPh), hexanethiolate (-SC6), or biotinylated (-S-PEG-biotin) ligands had been introduced by ligand exchange. In negative-mode ESI-MS, no added reagents were needed in order to observe Au25(SC2Ph)18- and to analyze mixed monolayer Au25 MPCs prepared by ligand exchange with 4-mercaptobenzoic acid, HSPhCOOH, which gave spectra through deprotonation of the carboxylic acids. Adducts of tetraoctylammonium (Oct4N+) with -SPhCOO- sites were also observed. Mass spectrometry is the only method that has demonstrated capacity for measuring the exact distribution of ligand-exchange products. The possible origins of the different Au25 core charges (1-, 0, 1+, 2+) observed during electrospray ionization are discussed.
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Affiliation(s)
- Joseph B Tracy
- Kenan Laboratories of Chemistry, University of North Carolina, Chapel Hill, North Carolina 27599, USA
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Sevillano P, Fuhr O, Fenske D. Synthese und Struktur von [Au10Se5(dppa)4{Co2(CO)5}4]. Z Anorg Allg Chem 2007. [DOI: 10.1002/zaac.200700146] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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33
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Investigating the Thermolysis Products of [Cd10Se4(SePh)12(PnPr3)4] – The New Cluster Ion [Cd17Se4(SePh)28]2−. J CLUST SCI 2007. [DOI: 10.1007/s10876-007-0121-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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34
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Tracy JB, Kalyuzhny G, Crowe MC, Balasubramanian R, Choi JP, Murray RW. Poly(ethylene glycol) Ligands for High-Resolution Nanoparticle Mass Spectrometry. J Am Chem Soc 2007; 129:6706-7. [PMID: 17477534 DOI: 10.1021/ja071042r] [Citation(s) in RCA: 155] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Joseph B Tracy
- Kenan Laboratories of Chemistry, University of North Carolina, Chapel Hill, North Carolina 27599, USA
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Crespo O, Gimeno MC, Laguna A, Larraz C, Villacampa MD. Highly Luminescent Gold(I)-Silver(I) and Gold(I)-Copper(I) Chalcogenide Clusters. Chemistry 2006; 13:235-46. [PMID: 17009375 DOI: 10.1002/chem.200600566] [Citation(s) in RCA: 66] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
The reactions of [AuClL] with Ag(2)O, where L represents the heterofunctional ligands PPh(2)py and PPh(2)CH(2)CH(2)py, give the trigoldoxonium complexes [O(AuL)(3)]BF(4). Treatment of these compounds with thio- or selenourea affords the triply bridging sulfide or selenide derivatives [E(AuL)(3)]BF(4) (E=S, Se). These trinuclear species react with Ag(OTf) or [Cu(NCMe)(4)]PF(6) to give different results, depending on the phosphine and the metal. The reactions of [E(AuPPh(2)py)(3)]BF(4) with silver or copper salts give [E(AuPPh(2)py)(3)M](2+) (E=O, S, Se; M=Ag, Cu) clusters that are highly luminescent. The silver complexes consist of tetrahedral Au(3)Ag clusters further bonded to another unit through aurophilic interactions, whereas in the copper species two coordination isomers with different metallophilic interactions were found. The first is analogous to the silver complexes and in the second, two [S(AuPPh(2)py)(3)](+) units bridge two copper atoms through one pyridine group in each unit. The reactions of [E(AuPPh(2)CH(2)CH(2)py)(3)]BF(4) with silver and copper salts give complexes with [E(AuPPh(2)CH(2)CH(2)py)(3)M](2+) stoichiometry (E=O, S, Se; M=Ag, Cu) with the metal bonded to the three nitrogen atoms in the absence of AuM interactions. The luminescence of these clusters has been studied by varying the chalcogenide, the heterofunctional ligand, and the metal.
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Affiliation(s)
- Olga Crespo
- Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-CSIC, 50009 Zaragoza, Spain
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Sevillano P, Fuhr O, Kattannek M, Nava P, Hampe O, Lebedkin S, Ahlrichs R, Fenske D, Kappes MM. The Phosphine-Stabilized Gold–Arsenic Clusters [Au19(AsnPr)8(dppe)6]Cl3, [Au10(AsnPr)4(dppe)4]Cl2, [Au17(AsnPr)6(As2nPr2)(dppm)6]Cl3, and [Au10(AsPh)4(dppe)4]Cl2: Synthesis, Characterization, and DFT Calculations. Angew Chem Int Ed Engl 2006; 45:3702-8. [PMID: 16680783 DOI: 10.1002/anie.200504566] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Paloma Sevillano
- Institut für Anorganische Chemie, Universität Karlsruhe, 76128 Karlsruhe, Germany
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Sevillano P, Fuhr O, Kattannek M, Nava P, Hampe O, Lebedkin S, Ahlrichs R, Fenske D, Kappes MM. Die phosphanstabilisierten Gold-Arsen-Cluster [Au19(AsnPr)8(dppe)6]Cl3, [Au10(AsnPr)4(dppe)4]Cl2, [Au17(AsnPr)6(As2nPr2)(dppm)6]Cl3 und [Au10(AsPh)4(dppe)4]Cl2 – Synthese, Charakterisierung und DFT-Rechnungen. Angew Chem Int Ed Engl 2006. [DOI: 10.1002/ange.200504566] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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38
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Sevillano P, Fuhr O, Matern E, Fenske D. Synthese, Kristallstruktur und spektroskopische Charakterisierung von [Au12(PPh)2(P2Ph2)2(dppm)4Cl2]Cl2. Z Anorg Allg Chem 2006. [DOI: 10.1002/zaac.200500416] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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39
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Eichhöfer A, Hampe O. Mass spectrometric study on the neutral nanocluster [Cd32Se14(SePh)36L4] (L=THF, OPPh3) upon charged ligand exchange. Chem Phys Lett 2005. [DOI: 10.1016/j.cplett.2005.03.085] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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40
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Olkowska-Oetzel J, Sevillano P, Eichhöfer A, Fenske D. Binary and Ternary Cluster Complexes Containing Gold-Selenium, Gold-Indium-Selenium and Gold-Gallium-Tellurium− Synthesis and Structures of [Au5Se2(PPh3)4]Cl, [(Au3Se)2{Ph2P(CH2)6PPh2}3]Cl2, [Au10Se4{Ph2P(CH2)5PPh2}4]InCl5, [Au4(SeInCl3)2{Ph2P(CH2)5PPh2}2], [Au2(TeGaCl3){Ph2P(CH2)6PPh2}]2 and [Au8Se4In{Ph2P(CH2)2PPh2}4](InCl4)3. Eur J Inorg Chem 2004. [DOI: 10.1002/ejic.200300774] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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41
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Jayaraman S, Hillier AC. Screening the Reactivity of PtxRuy and PtxRuyMoz Catalysts toward the Hydrogen Oxidation Reaction with the Scanning Electrochemical Microscope. J Phys Chem B 2003. [DOI: 10.1021/jp0274886] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- S. Jayaraman
- Department of Chemical Engineering, University of Virginia, Charlottesville, Virginia 22904
| | - A. C. Hillier
- Department of Chemical Engineering, University of Virginia, Charlottesville, Virginia 22904
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Malkar NB, Lauer-Fields JL, Juska D, Fields GB. Characterization of peptide-amphiphiles possessing cellular activation sequences. Biomacromolecules 2003; 4:518-28. [PMID: 12741765 DOI: 10.1021/bm0256597] [Citation(s) in RCA: 61] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Numerous approaches have been described for modifying biomaterials to incorporate extracellular matrix components. "Peptide-amphiphiles", whereby monoalkyl hydrocarbon chains are covalently linked to peptide sequences, have been shown previously to (a) form specific molecular architecture with enhanced stability and (b) promote cell adhesion, spreading, and signaling. The present study has examined the use of chimeric peptide-amphiphiles for inducing protein-like structures and peptide-amphiphile mixtures for enhancing surface bioactivity. The alpha-helical propensity of a 21 residue peptide, incorporating the SPARC(119-122) angiogenesis-inducing sequence and either unmodified or acylated with a C(6), C(10), C(14), C(16), C(18), C(18:1), or C(18:1-OH) monoalkyl hydrocarbon chain, has been examined. Peptide and peptide-amphiphile structures were characterized by circular dichroism and one- and two-dimensional NMR spectroscopic techniques. The 21 residue peptide alone does not form a distinct structure in solution, whereas N-terminal acylation by monoalkyl hydrocarbon chains results in the 21 residue peptide-amphiphile adopting a predominantly alpha-helical structure in solution. The thermal stability of the alpha-helix increases with increasing hydrocarbon chain length. The SPARC(119-122) peptide-amphiphiles were then screened for promotion of endothelial cell adhesion and spreading. The greatest activity was achieved by using a mixture of the alpha-helical SPARC(119-122) peptide-amphiphile, a triple-helical peptide-amphiphile incorporating the alpha2beta1 integrin binding site from type I collagen, and a pseudolipid. The pseudolipid is most likely required for a spatial distribution of the peptide-amphiphiles that allows for optimal cellular interactions. Overall, we have found that incorporation of bioactive sequences within peptide-amphiphiles results in the induction of an ordered structure of the bioactive sequence and that mixtures of peptide-amphiphiles can be used to promote endothelial cell behaviors comparable to extracellular matrix components.
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Affiliation(s)
- Navdeep B Malkar
- Department of Chemistry & Biochemistry, Florida Atlantic University, 777 Glades Road, Boca Raton, Florida 33431-0991, USA
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43
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Vogel U, Sekar P, Ahlrichs R, Huniar U, Scheer M. An Unusual Bonding Situation in a Novel AuI-Phosphido Complex with a Planar Au3P3 Framework. Eur J Inorg Chem 2003. [DOI: 10.1002/ejic.200390197] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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44
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Eichhöfer A, Hampe O, Blom M. Synthesis, Structures, and Properties of a Series of [Cd8Se(SePh)12Cl4]2 Cluster Compounds with Different Counterions. Eur J Inorg Chem 2003. [DOI: 10.1002/ejic.200390169] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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45
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46
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Sevillano P, Langetepe T, Fenske D. Neue Gold-Selen-Komplexverbindungen: Synthesen und Strukturen von [Au10Se4(dpppe)4]Br2, [Au2Se(dppbe)]∞, [(Au3Se)2(dppbp)3]Cl2 und [Au34Se14(tpep)6(tpepSe)2]Cl6. Z Anorg Allg Chem 2003. [DOI: 10.1002/zaac.200390033] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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47
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Wallbank AI, Corrigan JF. Triply bridged dicopper-bis(trimethylsilylchalcogenolates): Synthesis and characterization of the series of helical complexes [(Me3SiE-Cu)2(µ-Ph2PCCPPh2-κ2P)3] (E = S, Se, Te). CAN J CHEM 2002. [DOI: 10.1139/v02-032] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The copper-chalcogenolates [(Me3SiE-Cu)2(µ-Ph2PC[Formula: see text]CPPh2-κ2P)3] (1, E = S; 2, E = Se; 3, E = Te) have been prepared in good yield from [(OAcCu)2(µ-Ph2PC[Formula: see text]CPPh2-κ2P)3] and E(SiMe3)2 at low temperatures. Complexes 13 contain two pendant -ESiMe3 moieties bonded to copper(I) centres, which are also bridged by three didentate ligands to form helical structures. Complexes 13 have been characterized by single crystal crystallographic and spectroscopic methods.Key words: copper, chalcogen, helical, trimethylsilyl groups, phosphinoacetylene.
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48
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Lebedkin S, Langetepe T, Sevillano P, Fenske D, Kappes MM. Novel Photophysical Properties of Gold Selenide Complexes: Photogeneration of Singlet Oxygen by [Au18Se8(dppe)6]Br2 and Near-Infrared Photoluminescence of [Au10Se4(dpppe)4]Br2. J Phys Chem B 2002. [DOI: 10.1021/jp021100p] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sergei Lebedkin
- Forschungszentrum Karlsruhe, Institut für Nanotechnologie, D-76021 Karlsruhe, Germany, Institut für Physikalische Chemie II, Universität Karlsruhe, D-76128 Karlsruhe, Germany, and Institut für Anorganische Chemie, Universität Karlsruhe, D-76128 Karlsruhe, Germany
| | - Timo Langetepe
- Forschungszentrum Karlsruhe, Institut für Nanotechnologie, D-76021 Karlsruhe, Germany, Institut für Physikalische Chemie II, Universität Karlsruhe, D-76128 Karlsruhe, Germany, and Institut für Anorganische Chemie, Universität Karlsruhe, D-76128 Karlsruhe, Germany
| | - Paloma Sevillano
- Forschungszentrum Karlsruhe, Institut für Nanotechnologie, D-76021 Karlsruhe, Germany, Institut für Physikalische Chemie II, Universität Karlsruhe, D-76128 Karlsruhe, Germany, and Institut für Anorganische Chemie, Universität Karlsruhe, D-76128 Karlsruhe, Germany
| | - Dieter Fenske
- Forschungszentrum Karlsruhe, Institut für Nanotechnologie, D-76021 Karlsruhe, Germany, Institut für Physikalische Chemie II, Universität Karlsruhe, D-76128 Karlsruhe, Germany, and Institut für Anorganische Chemie, Universität Karlsruhe, D-76128 Karlsruhe, Germany
| | - Manfred M. Kappes
- Forschungszentrum Karlsruhe, Institut für Nanotechnologie, D-76021 Karlsruhe, Germany, Institut für Physikalische Chemie II, Universität Karlsruhe, D-76128 Karlsruhe, Germany, and Institut für Anorganische Chemie, Universität Karlsruhe, D-76128 Karlsruhe, Germany
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49
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Fenske D, Langetepe T. Synthesen und Strukturen der Silber-Selen-Clusterkomplexe [Ag4(SeiPr)4(dppm)2], [Ag8(SeEt)8(dppp)]∞, [Ag28Se6(SenBu)16(dppp)4] und [Ag124Se57(SePtBu2)4Cl6(tBu2P(CH2)3PtBu2)12]. Angew Chem Int Ed Engl 2002. [DOI: 10.1002/1521-3757(20020118)114:2<306::aid-ange306>3.0.co;2-u] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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50
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Zheng Y, Huo Q, Kele P, Andreopoulos FM, Pham SM, Leblanc RM. A new fluorescent chemosensor for copper ions based on tripeptide glycyl-histidyl-lysine (GHK). Org Lett 2001; 3:3277-80. [PMID: 11594813 DOI: 10.1021/ol0101638] [Citation(s) in RCA: 130] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
[structure: see text]. A new fluorescent chemosensor for Cu2+ ions was synthesized by modifying the tripeptide glycyl-histidyl-lysine (GHK) with 9-carbonylanthracene via the standard Fmoc solid-phase peptide synthesis method. While significant fluorescence quenching was observed from the molecule upon binding with Cu2+, addition of Fe2+, Co2+, Ni2+, and Zn2+ to the peptide solution caused a minimum fluorescence emission spectral change, indicating a high specificity of this chemosensor for Cu2+ ions. Effects of pH were also investigated.
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Affiliation(s)
- Y Zheng
- Center for Supramolecular Science and Department of Chemistry, University of Miami, PO Box 249118, Coral Gables, Florida 33124, USA
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