1
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Wengler-Rust S, Staechelin YU, Lange H, Weller H. Electron Donor-Specific Surface Interactions Promote the Photocatalytic Activity of Metal-Semiconductor Nanohybrids. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2401388. [PMID: 38634407 DOI: 10.1002/smll.202401388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2024] [Revised: 03/25/2024] [Indexed: 04/19/2024]
Abstract
In the past two decades, the application of colloidal semiconductor-metal nanoparticles (NPs) as photocatalysts for the hydrogen generation from water has been extensively studied. The present body of literature studies agrees that the photocatalytic yield strongly depends on the electron donating agent (EDA) added for scavenging the photogenerated holes. The highest reported hydrogen production rates are obtained in the presence of ionic EDAs and at high pH. The large hydrogen production rates are attributed to fast hole transfer from the NP onto the EDAs. However, the present discussions do not treat the influence of EDA-specific surface interactions. This systematic study focuses on that aspect by combining steady-state hydrogen production measurements with time-resolved and static optical spectroscopy, employing 11-mercaptoundecanoic acid-capped, Pt-tipped CdSe/CdS dot-in-rods in the presence of a large set of EDAs. Based on the experimental results, two distinct EDA groups are identified: surface-active and diffusion-limited EDAs. The largest photocatalytic efficiencies are obtained in the presence of surface-active EDAs that induce an agglomeration of the NPs. This demonstrates that the introduction of surface-active EDAs can significantly enhance the photocatalytic activity of the NPs, despite reducing their colloidal stability and inducing the formation of NP networks.
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Affiliation(s)
- Soenke Wengler-Rust
- Institut für Physikalische Chemie, Universität Hamburg, 20146, Hamburg, Germany
| | - Yannic U Staechelin
- Institut für Physikalische Chemie, Universität Hamburg, 20146, Hamburg, Germany
| | - Holger Lange
- The Hamburg Centre for Ultrafast Imaging, 22761, Hamburg, Germany
- Institut für Physik und Astronomie, Universität Potsdam, 14476, Potsdam, Germany
| | - Horst Weller
- Institut für Physikalische Chemie, Universität Hamburg, 20146, Hamburg, Germany
- The Hamburg Centre for Ultrafast Imaging, 22761, Hamburg, Germany
- Fraunhofer IAP-CAN, 20146, Hamburg, Germany
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2
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Valentine AJ, Taylor LJ, Geer AM, Huke CD, Wood KE, Tovey W, Lewis W, Argent SP, Teale AM, McMaster J, Kays DL. Structural and Electronic Studies of Substituted m-Terphenyl Group 12 Complexes. Organometallics 2022; 41:1426-1433. [PMID: 36157255 PMCID: PMC9490839 DOI: 10.1021/acs.organomet.2c00156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Indexed: 12/03/2022]
Abstract
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The effects of para-substitution on the structural
and electronic properties of four series of two-coordinate m-terphenyl Group 12 complexes (R-Ar#)2M (M = Zn, Cd, Hg; R = t-Bu 1–3, SiMe34–6,
Cl 7–9, CF310–12, where R-Ar# = 2,6-{2,6-Xyl}2-4-R-C6H2 and 2,6-Xyl = 2,6-Me2C6H3) have been investigated. X-ray crystallography
shows little structural variation across the series, with no significant
change in the C–M–C bond distances and angles. However,
considerable electronic differences are revealed by heteronuclear
nuclear magnetic resonance (NMR) spectroscopy; a linear correlation
is observed between the 113Cd, 199Hg, and 1H (2,6-Xyl methyl protons) NMR chemical shifts of the para-substituted complexes and the Hammett constants for
the R-substituents. Specifically, an upfield shift in the NMR signal
is observed with increasingly electron-withdrawing R-substituents.
Density functional theory (DFT) calculations are employed to attempt
to rationalize these trends.
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Affiliation(s)
- Andrew J. Valentine
- School of Chemistry, University of Nottingham, University Park, Nottingham NG7 2RD, U.K
| | - Laurence J. Taylor
- School of Chemistry, University of Nottingham, University Park, Nottingham NG7 2RD, U.K
| | - Ana M. Geer
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC Universidad de Zaragoza, Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - Cameron D. Huke
- School of Chemistry, University of Nottingham, University Park, Nottingham NG7 2RD, U.K
| | - Katherine E. Wood
- School of Chemistry, University of Nottingham, University Park, Nottingham NG7 2RD, U.K
| | - Will Tovey
- School of Chemistry, University of Nottingham, University Park, Nottingham NG7 2RD, U.K
| | - William Lewis
- School of Chemistry, The University of Sydney, F11, Eastern Avenue, Sydney, NSW 2006, Australia
| | - Stephen P. Argent
- School of Chemistry, University of Nottingham, University Park, Nottingham NG7 2RD, U.K
| | - Andrew M. Teale
- School of Chemistry, University of Nottingham, University Park, Nottingham NG7 2RD, U.K
| | - Jonathan McMaster
- School of Chemistry, University of Nottingham, University Park, Nottingham NG7 2RD, U.K
| | - Deborah L. Kays
- School of Chemistry, University of Nottingham, University Park, Nottingham NG7 2RD, U.K
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3
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Xing B, Ge S, Zhao J, Yang H, Song J, Geng Y, Qiao Y, Gu L, Han P, Ma G. Alloyed Crystalline CdSe 1-xS x Semiconductive Nanomaterials - A Solid State 113Cd NMR Study. ChemistryOpen 2020; 9:1018-1026. [PMID: 33072471 PMCID: PMC7549000 DOI: 10.1002/open.202000216] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Revised: 09/03/2020] [Indexed: 01/14/2023] Open
Abstract
Solid‐state NMR analysis on wurtzite alloyed CdSe1−xSx crystalline nanoparticles and nanobelts provides evidence that the 113Cd NMR chemical shift is not affected by the varying sizes of nanoparticles, but is sensitive to the S/Se anion molar ratios. A linear correlation is observed between 113Cd NMR chemical shifts and the sulfur component for the alloyed CdSe1−xSx (0<x<1) system both in nanoparticles and nanobelts (δCd=169.71⋅XS+529.21). Based on this correlation, a rapid and applied approach has been developed to determine the composition of the alloyed nanoscalar materials utilizing 113Cd NMR spectroscopy. The observed results from this system confirm that one can use 113Cd NMR spectroscopy not only to determine the composition but also the phase separation of nanomaterial semiconductors without destruction of the sample structures. In addition, some observed correlations are discussed in detail.
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Affiliation(s)
- Baoyan Xing
- College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan, 030024, China.,Institute of Carbon Materials Science, Shanxi Datong University, Datong, 037009, China
| | - Sai Ge
- Institute of Carbon Materials Science, Shanxi Datong University, Datong, 037009, China
| | - Jianguo Zhao
- College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan, 030024, China.,Institute of Carbon Materials Science, Shanxi Datong University, Datong, 037009, China
| | - Hui Yang
- Institute of Carbon Materials Science, Shanxi Datong University, Datong, 037009, China
| | - Jie Song
- Institute of Carbon Materials Science, Shanxi Datong University, Datong, 037009, China
| | - Yu Geng
- Institute of Carbon Materials Science, Shanxi Datong University, Datong, 037009, China
| | - Yuying Qiao
- Institute of Carbon Materials Science, Shanxi Datong University, Datong, 037009, China
| | - Ling Gu
- Institute of Carbon Materials Science, Shanxi Datong University, Datong, 037009, China
| | - Peide Han
- College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan, 030024, China
| | - Guibin Ma
- Institute of Carbon Materials Science, Shanxi Datong University, Datong, 037009, China
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4
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Pop A, Bellini C, Şuteu R, Dorcet V, Roisnel T, Carpentier JF, Silvestru A, Sarazin Y. Cadmium complexes bearing Me2N^E^O - (E = S, Se) organochalcogenoalkoxides and their zinc and mercury analogues. Dalton Trans 2017; 46:3179-3191. [PMID: 28220918 DOI: 10.1039/c7dt00279c] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Heteroleptic zinc and cadmium complexes of the type [{Me2N^E^OR2}M-Nu]n (M = Zn, Cd; E = S, Se; R = CH3, CF3; Nu = N(SiMe3)2, I, Cl; n = 1-2) were prepared by reacting the alcohol proteo-ligands {Me2N^E^OR2}H with [M(N(SiMe3)2)2] (M = Zn, Cd) or [XMN(SiMe3)2] (M = Zn, X = Cl; M = Cd, X = I) in an equimolar ratio. These group 12 metal complexes were characterised in solution by multinuclear NMR spectroscopy and their solid-state structures were determined by X-ray diffractometry. The ligands {Me2N^E^O(CH3)2}- bearing CH3 groups in α position to the alkoxide behave as κ2-O,E-bidentate moieties (E = S, Se) and form centro-symmetric dinuclear O-bridged heteroleptic alkoxo-amido complexes both with zinc and cadmium, with four-coordinate metal centres resting in tetrahedral environments. By contrast, complexes supported by the CF3-substituted {Me2N^E^O(CF3)2}- crystallise as tetrahedral mononuclear species, with tridentate κ3-N,O,E-coordinated ligands. These structural differences resulting from changes in the ligand skeleton and in the electron-donating properties of the alkoxide were also observed in solution. Attempts to prepare congeneric heteroleptic mercury complexes from [Hg(N(SiMe3)2)2] unexpectedly only afforded homoleptic bis(alkoxide)s such as [{Me2N^S^O(CF3)2}2Hg]. Owing to the strong Hg-C bond, treatment of [PhHgN(SiMe3)2] with {Me2N^S^O(CF3)2}H afforded the heteroleptic, T-shaped [{Me2N^S^O(CF3)2}HgPh] mercuric alkoxide upon elimination of hexamethyldisilazane. [{Me2N^S^O(CF3)2}2Hg] and [{Me2N^S^O(CF3)2}HgPh] constitute very rare examples of structurally characterised mercuric alkoxides.
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Affiliation(s)
- Alexandra Pop
- Supramolecular Organic and Organometallic Chemistry Centre, Chemistry Department, Faculty of Chemistry and Chemical Engineering, Babes-Bolyai University, RO-400028 Cluj-Napoca, Romania.
| | - Clément Bellini
- Université de Rennes 1, CNRS, Institut des Sciences Chimiques de Rennes, UMR 6226, Campus de Beaulieu, F-35042 Rennes Cedex, France.
| | - Răzvan Şuteu
- Supramolecular Organic and Organometallic Chemistry Centre, Chemistry Department, Faculty of Chemistry and Chemical Engineering, Babes-Bolyai University, RO-400028 Cluj-Napoca, Romania.
| | - Vincent Dorcet
- Université de Rennes 1, CNRS, Institut des Sciences Chimiques de Rennes, UMR 6226, Campus de Beaulieu, F-35042 Rennes Cedex, France.
| | - Thierry Roisnel
- Université de Rennes 1, CNRS, Institut des Sciences Chimiques de Rennes, UMR 6226, Campus de Beaulieu, F-35042 Rennes Cedex, France.
| | - Jean-François Carpentier
- Université de Rennes 1, CNRS, Institut des Sciences Chimiques de Rennes, UMR 6226, Campus de Beaulieu, F-35042 Rennes Cedex, France.
| | - Anca Silvestru
- Supramolecular Organic and Organometallic Chemistry Centre, Chemistry Department, Faculty of Chemistry and Chemical Engineering, Babes-Bolyai University, RO-400028 Cluj-Napoca, Romania.
| | - Yann Sarazin
- Université de Rennes 1, CNRS, Institut des Sciences Chimiques de Rennes, UMR 6226, Campus de Beaulieu, F-35042 Rennes Cedex, France.
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5
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Treadwell LJ, Boyle TJ, Phelan WA, Parkes MV, Young DP. Synthesis and characterization of a series of nickel( ii) alkoxide precursors and their utility for Ni(0) nanoparticle production. Dalton Trans 2017; 46:5806-5815. [DOI: 10.1039/c6dt04083g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of nickel alkoxides was synthesized and characterized as [Ni(OAr)2(py)x]. Precursor dependent, phase-specific Ni0nanoparticles were produced by a solution precipitation route:1(top) hcp and6(bottom) the fcc irregular shape Ni0NPs were formed.
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Affiliation(s)
| | - Timothy J. Boyle
- Sandia National Laboratories
- Advanced Materials Laboratory
- Albuquerque
- USA
| | - W. Adam Phelan
- Department of Physics and Astronomy
- Louisiana State University
- Baton Rouge
- USA
| | - Marie V. Parkes
- Sandia National Laboratories
- Advanced Materials Laboratory
- Albuquerque
- USA
| | - David P. Young
- Department of Physics and Astronomy
- Louisiana State University
- Baton Rouge
- USA
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6
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Boyle TJ, Sivonxay E. Synthesis and characterization of 2-hydroxy-pyridine modified Group 4 alkoxides. J COORD CHEM 2016. [DOI: 10.1080/00958972.2016.1183253] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Timothy J. Boyle
- Advanced Materials Laboratory, Sandia National Laboratories, Albuquerque, NM, USA
| | - Eric Sivonxay
- Advanced Materials Laboratory, Sandia National Laboratories, Albuquerque, NM, USA
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7
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He G, Shynkaruk O, Lui MW, Rivard E. Small Inorganic Rings in the 21st Century: From Fleeting Intermediates to Novel Isolable Entities. Chem Rev 2014; 114:7815-80. [DOI: 10.1021/cr400547x] [Citation(s) in RCA: 156] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Gang He
- Department of Chemistry, University of Alberta, 11227 Saskatchewan
Drive, Edmonton, Alberta, Canada T6G 2G2
| | - Olena Shynkaruk
- Department of Chemistry, University of Alberta, 11227 Saskatchewan
Drive, Edmonton, Alberta, Canada T6G 2G2
| | - Melanie W. Lui
- Department of Chemistry, University of Alberta, 11227 Saskatchewan
Drive, Edmonton, Alberta, Canada T6G 2G2
| | - Eric Rivard
- Department of Chemistry, University of Alberta, 11227 Saskatchewan
Drive, Edmonton, Alberta, Canada T6G 2G2
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8
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Blundell TJ, Hastings FR, Gridley BM, Moxey GJ, Lewis W, Blake AJ, Kays DL. Ligand influences on homoleptic Group 12 m-terphenyl complexes. Dalton Trans 2014; 43:14257-64. [DOI: 10.1039/c4dt00647j] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The analysis of three series of two-coordinate Group 12 bis-terphenyl complexes highlights how subtle changes to ligand properties, particularly sterics, and, to a smaller extent, electronics have a large effect on the solid state structures adopted.
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Affiliation(s)
- Toby J. Blundell
- School of Chemistry
- University of Nottingham
- University Park
- Nottingham, UK
| | - Fiona R. Hastings
- School of Chemistry
- University of Nottingham
- University Park
- Nottingham, UK
| | | | - Graeme J. Moxey
- School of Chemistry
- University of Nottingham
- University Park
- Nottingham, UK
| | - William Lewis
- School of Chemistry
- University of Nottingham
- University Park
- Nottingham, UK
| | - Alexander J. Blake
- School of Chemistry
- University of Nottingham
- University Park
- Nottingham, UK
| | - Deborah L. Kays
- School of Chemistry
- University of Nottingham
- University Park
- Nottingham, UK
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9
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Gridley BM, Moxey GJ, Lewis W, Blake AJ, Kays DL. Conformational Isomerism in Monomeric, Low-Coordinate Group 12 Complexes Stabilized by a Naphthyl-Substitutedm-Terphenyl Ligand. Chemistry 2013; 19:11446-53. [DOI: 10.1002/chem.201301872] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2013] [Indexed: 11/07/2022]
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10
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Wang L, Yan ZH, Xiao Z, Guo D, Wang W, Yang Y. Reactant ratio-modulated entangled Cd(ii) coordination polymers based on rigid tripodal imidazole ligand and tetrabromoterephthalic acid: interpenetration, interdigitation and self-penetration. CrystEngComm 2013. [DOI: 10.1039/c3ce40273h] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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11
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Boyle TJ, Steele LAM, Burton PD, Hoppe SM, Lockhart C, Rodriguez MA. Synthesis and structural characterization of a family of modified hafnium tert-butoxide for use as precursors to hafnia nanoparticles. Inorg Chem 2012; 51:12075-92. [PMID: 23131086 DOI: 10.1021/ic300622h] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
A series of modified, hafnium tert-butoxide ([Hf(OBu(t))4]) compounds (1-26) were crystallographically characterized, and representative species were then used to produce HfO2nanoparticles. This systematically varied family of [Hf(OR)4] compounds was developed from the reaction of [Hf(OBu(t))4] with a series of (i) Lewis basic solvents, tetrahydrofuran, pyridine, or 1-methylimidazole; (ii) simple phenols, HOC6H4(R)-2 or HOC6H3(R)2-2,6 where R = CH3, CH(CH3)2, or C(CH3)3; and (iii) complex polydentate alcohols, tetrahydrofuran methanol (H-OTHF), pyridinecarbinol (H-OPy), and tris(hydroxymethylethane) (THME-H3). The solvent-modified products were crystallographically characterized as [Hf(OBu(t))4(solv)n] (1-3). The phenoxide (OAr)-exchanged [Hf(OBu(t))4] products isolated from toluene were characterized as dimeric [Hf(OAr)n(OBu(t))4-n]2 (4 and 5) or [Hf(μ-OH)(OAr)3(HOBu(t))]2 (6 and 7) for the less sterically demanding OAr ligands and [Hf(OAr)n(OBu(t))4-n(HOBu(t))] (8 and 9) monomers for the larger OAr ligands. When Lewis basic solvents were employed, solvated monomers of varied OAr substitutions were observed as [Hf(OAr)n(OBu(t))4-n(solv)x], where solv = THF (10, 11, and 13-15) and py (16 and 19-21). The nuclearities of the remaining complex polydentate alcohol derivatives ranged from monomers (24, OPy) to dimers (22, OTHF; 23, OPy) to tetramers (25 and 26, THME). On the basis of their nuclearities, select members of this family of [Hf(OR)4] compounds (monomer, [Hf(OBu(t))4], 8; dimer, 19a, 22; tetramer, 25) were used to determine the validity of using [Hf(OR)4] precursors for the production of hafnia (HfO2) nanoparticles under solvothermal (oleylamine/oleic acid) conditions. After a 650 °C thermal treatment, the resulting powder X-ray diffraction pattern for each powder was found to be consistent with HfO2 (PDF 00-040-1173), and after a 1000 °C treatment, larger particles of HfO2 (PDF 00-043-1017) were reported. Transmission electron microscopy images confirmed that nanomaterials had formed. Because identical processing conditions had been employed for each HfO2 nanomaterial, the morphological variations observed in this study may be attributed to the individual precursors ("precursor structure affect").
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Affiliation(s)
- Timothy J Boyle
- Sandia National Laboratories , Advanced Materials Laboratory, 1001 University Boulevard SE, Albuquerque, New Mexico 87106, United States
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12
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Boyle TJ, Yonemoto DT, Steele LA, Farrell J, Renehan P, Huhta T. Coordination chemistry of N,N,N',N'-tetrakis(3,5-substituted benzyl-2-oxide)-2,2'-(ethylenedioxy)diethanamine modified Group 4 metal alkoxides. Inorg Chem 2012; 51:12023-31. [PMID: 23088334 DOI: 10.1021/ic3019327] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The coordination behavior of a set of (ethylenedioxy)diethanamine-based tetraphenol ligands with a series of Group 4 metal alkoxides ([M(OR)(4)]) was determined. The ligands were synthesized from a modified Mannich reaction and fully characterized as N,N,N',N'-tetrakis(3,5-tert-butyl-benzyl-2-hydroxy)-2,2'-(ethylenedioxy)diethanamine, termed H(4)-OEA-DBP(4) (1), and N,N,N',N'-tetrakis(3,5-chloro-benzyl-2-hydroxy)-2,2'-(ethylenedioxy)diethanamine, termed H(4)-OEA-DCP(4) (2). The reaction of 1 with a set of [M(OR)(4)] [M = Ti, Zr, or Hf; OR = iso-propoxide (OPr(i)), neo-pentoxide (ONep), or tert-butoxide (OBu(t))] precursors led to the isolation of [(OPr(i))(2)Ti](2)(μ-OEA-DBP(4)) (3), [(ONep)(2)Ti](2)(μ-OEA-DBP(4)) (4), and [(OBu(t))(2)M](2)(μ-OEA-DBP(4)) where M = Ti (5), Zr (6), or Hf (7). In addition, the [(ONep)(2)Ti](2)(μ-OEA-DCP(4)) (4a) derivative was isolated from the reaction of 2 and [Ti(ONep)(4)], demonstrating the similarity of coordination behavior between the two OEA-R(4) ligands. For 3-7, the metal center adopts a slightly distorted octahedral geometry by binding the two O atoms of the phenoxide moiety, as well as one N and one O atom from the OEA moieties, while retaining two of the original OR ligands. Solution NMR demonstrates inequivalent protons for the majority of the bound OEA ligands, which argues for retention of structure in solution. The synthesis and characterization of these compounds are presented in detail.
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Affiliation(s)
- Timothy J Boyle
- Sandia National Laboratories, Advanced Materials Laboratory, 1001 University Boulevard, SE, Albuquerque, New Mexico 87106, USA.
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13
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Boyle TJ, Steele LAM, Yonemoto DT. Synthesis and characterization of 4,4′-methylenebis (2,6-di-tert-butylphenol) derivatives of a series of metal alkoxides and alkyls. J COORD CHEM 2012. [DOI: 10.1080/00958972.2012.654785] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Affiliation(s)
- Timothy J. Boyle
- a Sandia National Laboratories, Advanced Materials Laboratory , 1001 University Boulevard, SE , Albuquerque , NM 87106 , USA
| | - Leigh Anna M. Steele
- a Sandia National Laboratories, Advanced Materials Laboratory , 1001 University Boulevard, SE , Albuquerque , NM 87106 , USA
| | - Daniel T. Yonemoto
- a Sandia National Laboratories, Advanced Materials Laboratory , 1001 University Boulevard, SE , Albuquerque , NM 87106 , USA
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14
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Singh S, Saini D, Mehta S, Kaur R, Ferretti V. Synthesis, characterization and molecular structures of barium(II) trichloroacetate DME/1,4-dioxane compounds. Polyhedron 2012. [DOI: 10.1016/j.poly.2011.09.018] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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15
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Boyle TJ, Ottley LAM, Apblett CA, Stewart CA, Hoppe SM, Hawthorne KL, Rodriguez MA. Synthesis, Characterization, and Electrochemical Properties of a Series of Sterically Varied Iron(II) Alkoxide Precursors and Their Resultant Nanoparticles. Inorg Chem 2011; 50:6174-82. [DOI: 10.1021/ic200423m] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Timothy J. Boyle
- Sandia National Laboratories, Advanced Materials Laboratory, 1001 University Boulevard, Southeast, Albuquerque, New Mexico 87106, United States
| | - Leigh Anna M. Ottley
- Sandia National Laboratories, Advanced Materials Laboratory, 1001 University Boulevard, Southeast, Albuquerque, New Mexico 87106, United States
| | - Christopher A. Apblett
- Sandia National Laboratories, Advanced Materials Laboratory, 1001 University Boulevard, Southeast, Albuquerque, New Mexico 87106, United States
| | - Constantine A. Stewart
- Sandia National Laboratories, Advanced Materials Laboratory, 1001 University Boulevard, Southeast, Albuquerque, New Mexico 87106, United States
| | - Sarah M. Hoppe
- Sandia National Laboratories, Advanced Materials Laboratory, 1001 University Boulevard, Southeast, Albuquerque, New Mexico 87106, United States
| | - Krista L. Hawthorne
- Sandia National Laboratories, Advanced Materials Laboratory, 1001 University Boulevard, Southeast, Albuquerque, New Mexico 87106, United States
| | - Mark A. Rodriguez
- Sandia National Laboratories, Advanced Materials Laboratory, 1001 University Boulevard, Southeast, Albuquerque, New Mexico 87106, United States
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16
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Chang YJ, Liu D, Ren ZG, Lang JP. Solvent effects on the formation of different cadmium compounds from CdSO4, HCl and 1,3,5-tris(imidazol-1-ylmethyl)-2,4,6-trimethylbenzene. INORG CHEM COMMUN 2011. [DOI: 10.1016/j.inoche.2010.12.012] [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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17
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Blake AJ, Lewis W, McMaster J, Moorhouse RS, Moxey GJ, Kays DL. Amido analogues of zincocenes and cadmocenes. Dalton Trans 2011; 40:1641-5. [DOI: 10.1039/c0dt01710h] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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18
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Synthesis, Crystal Structure, Photophysical Properties, and DFT Calculations of a Bis(tetrathia-calix[4]arene) Tetracadmium Complex. J CLUST SCI 2010. [DOI: 10.1007/s10876-010-0347-1] [Citation(s) in RCA: 13] [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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Boyle TJ, Ottley LAM, Hoppe SM, Campana CF. Series of Comparable Dinuclear Group 4 Neo-pentoxide Precursors for Production of pH Dependent Group 4 Nanoceramic Morphologies. Inorg Chem 2010; 49:10798-808. [DOI: 10.1021/ic101205d] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Timothy J. Boyle
- Sandia National Laboratories, Advanced Materials Laboratory, 1001 University Boulevard, SE, Albuquerque, New Mexico 87106, United States
| | - Leigh Anna M. Ottley
- Sandia National Laboratories, Advanced Materials Laboratory, 1001 University Boulevard, SE, Albuquerque, New Mexico 87106, United States
| | - Sarah M. Hoppe
- Sandia National Laboratories, Advanced Materials Laboratory, 1001 University Boulevard, SE, Albuquerque, New Mexico 87106, United States
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Boyle TJ, Raymond R, Boye DM, Ottley LAM, Lu P. Structurally characterized luminescent lanthanide zinc carboxylate precursors for Ln-Zn-O nanomaterials. Dalton Trans 2010; 39:8050-63. [PMID: 20664850 DOI: 10.1039/c002492a] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel family of lanthanide zinc carboxylate compounds was synthesized, characterized (structural determination and luminescent behavior), and investigated for utility as single-source precursors to Ln-Zn-O nanoparticles. Carboxylic acids [H-ORc = H-OPc (H-O(2)CCH(CH(3))(2), H-OBc (H-O(2)CC(CH(3))(3), H-ONc (H-O(2)CCH(2)C(CH(3))(3))] were individually reacted with diethyl zinc (ZnEt(2)) to yield a set of previously unidentified zinc carboxylates: (i) [Zn(mu-ORc)(3)Zn(mu-ORc)](n) [ORc = OPc (1), ONc (2)], (ii) [(py)Zn](2)(mu-ORc)(4) [ORc = OBc (3), ONc (4), and py = pyridine], or (iii) Zn(ORc)(2)(solv)(2) [ORc/solv = OPc/py (5), O(c)Nc/H(2)O (6) (O(c)Rc = chelating)]. Introduction of lanthanide cation [Ln[N(SiMe(3))(2)](3), ZnEt(2), and HOBc in py] yielded the mixed cationic species structurally characterized as: (i) (O(c)Bc)Ln[(mu-OBc)(3)Zn(py)](2) [Ln = Pr (7), Nd (8), Sm (9)] or (ii) (py)(2)Zn(mu-OBc)(3)Ln(O(c)Bc)(2)(py) [Ln = Tb (10), Dy (11), Er (12), Y (13), Yb (14)]. Exploration of alternative starting materials [Ln(NO(3))(3).nH(2)O, Zn(O(2)CCH(3))(2), HOBc in py] led to the isolation of (NO(3)(c))Ln[(mu-OBc)(3)Zn(py)](2) [Ln = La (15), Ce (16), Pr (17), Nd (18), Sm (19), Eu (20), Gd (21), Tb (22) Dy (23), and Er (24); NO(3)(c) = chelating]. The UV-vis spectra of 7-24 revealed standard absorption spectra for the Ln cations. Representative compounds were used to generate nanoparticles from an established 1,4-butanediol-based solution precipitation route. The nanoproducts isolated adopted either a mixed zincite/lanthanum oxide (18n or 22n) or pure zincite (8n or 10n) phase dependent on NO(3) or OBc moiety. Fluorescence was not observed for any of these nanomaterials possibly due to phase separation, low crystallinity, surface traps, and/or quenching based on elevated Ln cation content.
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Affiliation(s)
- Timothy J Boyle
- Sandia National Laboratories, Advanced Materials Laboratory, 1001 University Boulevard, SE, Albuquerque, NM 87106, USA.
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Boyle TJ, Ottley LM, Raymond R. Unusual structurally characterized pyridine carbinoxide copper(II) coordination compounds, isolated from organic solvents. J COORD CHEM 2010. [DOI: 10.1080/00958970903556088] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Timothy J. Boyle
- a Sandia National Laboratories , Advanced Materials Laboratory, 1001 University Boulevard , S.E., Albuquerque, NM 87106, USA
| | - leighanna M. Ottley
- a Sandia National Laboratories , Advanced Materials Laboratory, 1001 University Boulevard , S.E., Albuquerque, NM 87106, USA
| | - Rebecca Raymond
- a Sandia National Laboratories , Advanced Materials Laboratory, 1001 University Boulevard , S.E., Albuquerque, NM 87106, USA
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Davar F, Salavati-Niasari M, Mazaheri M. Thermal decomposition of [bis(salicylaldehydato)cadmium(II)] to CdS nanocrystals. Polyhedron 2009. [DOI: 10.1016/j.poly.2009.09.011] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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23
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Boyle TJ, Tribby LJ, Ottley LAM, Han SM. Synthesis and Characterization of Germanium Coordination Compounds for Production of Germanium Nanomaterials. Eur J Inorg Chem 2009; 2009:5550-5560. [PMID: 23555180 PMCID: PMC3613159 DOI: 10.1002/ejic.200900556] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2009] [Indexed: 11/11/2022]
Abstract
A series of novel germanium(II) precursors was synthesized to initiate an investigation between the precursors' structures and the morphologies of the resulting nanoparticles. The precursors were synthesized from the reaction of Ge[N(SiMe3)2]2 or [Ge(OBut)2]2 and the appropriate ligand: N,N'-dibenzylethylenediamine (H2-DBED), tert-butanol (H-OBut), 2,6-di-methyl phenol (H-DMP), 2,6-di-phenyl phenol (H-DPP), tert-butyldimethylsilanol (H-DMBS), triphenylsilanol (H-TPS), triphenylsilanethiol (H-TPST), and benzenethiol (H-PS). The products were identified as: [Ge(μc-DBED)]2 (1, μc= bridging chelating), [Ge(μ-DMP)(DMP)]2 (2), Ge(DPP)2 (3), [Ge(μ-OBut)(DMBS)]2, (4), [Ge(μ-DMBS)(DMBS)]2 (5), Ge(TPS)3(H) (6), [Ge(μ-TPST)(TPST)]2 (7), and Ge(PS)4 (8). The Ge(II) metal centers were found to adopt a pyramidal geometry for 1, 2, 4, 5, 7, a bent arrangement for 3, and a tetrahedral coordination for the Ge(IV) species 6 and 8. Using a simple solution precipitation methodology, Ge(0) nanomaterials were isolated as dots and wires for the majority of precursors. Compound 7 led to the isolation of amorphous GexSy. The nanomaterials isolated were characterized by TEM, EDS, and powder XRD. A correlation between the precursor's arrangement and final observed nanomorphology was proffered as part of the 'precursor structure affect' phenomenon.
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Affiliation(s)
- Timothy J. Boyle
- Sandia National Laboratories, Advanced Materials Laboratory, 1001 University Boulevard SE, Albuquerque, New Mexico, 87106
| | | | - Leigh Anna M. Ottley
- Sandia National Laboratories, Advanced Materials Laboratory, 1001 University Boulevard SE, Albuquerque, New Mexico, 87106
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Boyle TJ, Pratt HD, Ottley LAM, Alam TM, McIntyre SK, Rodriguez MA, Farrell J, Campana CF. Homo- and heterometallic complexes of tetra-(di-substituted hydroxybenzyl)-N,N'-ethylenediamine derivatives. Inorg Chem 2009; 48:9191-204. [PMID: 19746896 DOI: 10.1021/ic900691a] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The coordination behavior of a series of group 4 metal alkoxides [M(OR)(4)] modified by a set of novel substituted hydroxybenzyl ethylene diamine (H(4)-ED-L(4)) ligands {[tetra(3,5-di-t-butyl-2-hydroxybenzyl)-N,N'-ethylenediamine] termed H(4)-ED-DBP(4) (1), [tetra(3,5-di-t-amyl-2-hydroxybenzyl)-N,N'-ethylenediamine] termed H(4)-ED-DAP(4) (1a), and [tetra(3,5-dichloro-2-hydroxybenzyl)-N,N'-ethylenediamine] termed H(4)-ED-DCP(4) (2)} was elucidated. The reaction of 1 or 1a with the M(OR)(4) precursor led to the isolation of the structural similar species M(ED-L(4)) where L = DBP, M = Ti (3), Zr (4), Hf (5); L = DAP, M = Zr (4a), Hf (5a). In contrast, the reaction of 2 with the M(OR)(4) precursors yielded Ti(ED-DCP(4)) (6), (py)(2)Zr(ED-DCP(4)) (7), and (HOBu(t))Hf(ED-DCP(4)) (8) where py = pyridine and HOBu(t) = HOC(CH(3))(3). For 3-6, the cations of the monomeric species were completely encapsulated by all available heteroatoms (four O and two N) of the ED-L(4) ligands, yielding an octahedral geometry for each metal center. For 7 and 8, an identical binding by the ED-DCP(4) ligand was observed with the additional coordination of Lewis basic adducts, forming 8- and 7-coordinated metal centers, respectively. Switching to +2 cations led to the isolation of [(THF)Ca](2)(ED-DBP(4)) (9a) where THF = tetrahydrofuran, {[(py)Ca](4)(ED-(mu-DBP-eta(6))(4))(2)}(n) (9b), and [(py)Zn](ED-DBP(4))[Zn(py)(2)] (10) *5py and [(py)Sn](2)(ED-DBP(4)) (11). The structures of these species were significantly different in arrangement compared to the Group 4 derivatives. Further attempts to produce a mixed +4/+2 cationic species yielded [(py)(ONep)(2)Ti(ED-DBP(4))Zn(py)] (12). Reacting the single-source precursor Co[mu-OC(6)H(4)(CHMe(2))(2)-2)(2)Li(py)(2)](2) with 1, led to the isolation of (py)Li[ED-DBP(3)(H-DBP)]Co (13), with one of the phenol protons remaining unreacted. The synthesis and characterization of these compounds are presented in detail.
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Affiliation(s)
- Timothy J Boyle
- Advanced Materials Laboratory, Sandia National Laboratories, 1001 University Boulevard, SE, Albuquerque, New Mexico 87106, USA.
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25
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Khanna PK, More P, Shewate R, Beri RK, Viswanath AK, Singh V, Mehta BR. Preparation of CdSe Quantum Dots via Thermolysis of a Novel Single Source Cd/Se Precursor Derived from Cyclohexeno-1,2,3-selenadiazole. CHEM LETT 2009. [DOI: 10.1246/cl.2009.676] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Boyle TJ, Pratt HD, Alam TM, Headley T, Rodriguez MA. Synthesis and Characterization of Thiolate-Oxo Ligated Zinc Alkyl Derivatives for Production of Zn-Based Nanoparticles. Eur J Inorg Chem 2009; 2009:855-865. [PMID: 24068879 PMCID: PMC3780448 DOI: 10.1002/ejic.200800886] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2008] [Indexed: 11/10/2022]
Abstract
A series of mercapto-oxo containing reagents [3-mercaptopropionic acid (H2-3MPA), 4-mercaptophenol (H2-4MP), 2-mercaptopyridine-N-oxide (H-2MPO)] was reacted with diethyl zinc (ZnEt2) in hexanes/pyridine (py) to yield {(μ4-3MPA)[Zn(Et)(py)]4}∞ (1), [(py)2(Et)Zn(μ3-4MP)Zn(Et)(py)]2 (2), and (2MPO)Zn(Et)py (3). For polymeric 1, each of the functional sites of the 3MPA was bound to four tetrahedral (Td) coordinated Zn(Et)(py) subunits. The sulfur of the 3MPA bridges two of the 'Zn(Et)(py)' subunits, which are also bridged by the two carboxylate oxygens of another 3MPA to propagate the chain. In contrast, 2 forms a discrete tetranuclear species consisting of two Zn(Et)(py) moieties bridged by the oxygens of two 4MP ligands with the thiolate sites of each terminated by Zn(Et)(py)2 moieties. Compound 3 adopts a monomeric species using a chelating 2MPO, a terminal Et, and a bound py to fill the Td coordination of the Zn metal center. Compounds 1 - 3 were then used to generate nanoparticles via solution precipitation and solvothermal routes to determine the effect these precursors have on the morphology and composition of the final materials produced. Compounds 1 - 3 were found to form zincite, zinc metal, or mixed zincite/wurtzite phases from solution precipitation or solvothermal routes; however, no routes yielded the mixed anion (i.e., ZnO x S y ) materials.
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Affiliation(s)
- Timothy J. Boyle
- Sandia National Laboratories, Advanced Materials Laboratory, 1001 University Boulevard, SE, Albuquerque, New Mexico 87106
| | - Harry D. Pratt
- Sandia National Laboratories, Advanced Materials Laboratory, 1001 University Boulevard, SE, Albuquerque, New Mexico 87106
| | - Todd M. Alam
- Sandia National Laboratories, Advanced Materials Laboratory, 1001 University Boulevard, SE, Albuquerque, New Mexico 87106
| | - Thomas Headley
- Sandia National Laboratories, Advanced Materials Laboratory, 1001 University Boulevard, SE, Albuquerque, New Mexico 87106
| | - Mark A. Rodriguez
- Sandia National Laboratories, Advanced Materials Laboratory, 1001 University Boulevard, SE, Albuquerque, New Mexico 87106
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Boyle TJ, Ottley LAM, Rodriguez MA. Structurally characterized group 4 metal alkoxides modified with the pyridyl-based ligands 2-mercapto pyridine n-oxide and 3,3′-dihydroxy-2,2′-bipyridine. Polyhedron 2008. [DOI: 10.1016/j.poly.2008.06.037] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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28
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Affiliation(s)
- Surajit Jana
- NRW Graduate School of Chemistry, Institut für Anorganische and Analytische Chemie, and Organisch-chemisches Institut, University of Münster, Münster, Germany, and Fakultät für Chemie, Universität Bielefeld, Universitätsstrasse 25, 33615 Bielefeld, Germany
| | - Roland Fröhlich
- NRW Graduate School of Chemistry, Institut für Anorganische and Analytische Chemie, and Organisch-chemisches Institut, University of Münster, Münster, Germany, and Fakultät für Chemie, Universität Bielefeld, Universitätsstrasse 25, 33615 Bielefeld, Germany
| | - Alexander Hepp
- NRW Graduate School of Chemistry, Institut für Anorganische and Analytische Chemie, and Organisch-chemisches Institut, University of Münster, Münster, Germany, and Fakultät für Chemie, Universität Bielefeld, Universitätsstrasse 25, 33615 Bielefeld, Germany
| | - Norbert W. Mitzel
- NRW Graduate School of Chemistry, Institut für Anorganische and Analytische Chemie, and Organisch-chemisches Institut, University of Münster, Münster, Germany, and Fakultät für Chemie, Universität Bielefeld, Universitätsstrasse 25, 33615 Bielefeld, Germany
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Boyle TJ, Pratt HD, Alam TM, Rodriguez MA, Clem PG. Synthesis and characterization of solvated trifluoroacetate alkaline earth derivatives. Polyhedron 2007. [DOI: 10.1016/j.poly.2007.07.009] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Boyle TJ, Ottley LAM, Brewer LN, Sigman J, Clem PG, Richardson JJ. Structurally Characterized Erbium Alkoxides for Use as an Amphoteric Dopant in PErZT Ceramic Thin Film and Nanoparticles. Eur J Inorg Chem 2007. [DOI: 10.1002/ejic.200700314] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Timothy J. Boyle
- Sandia National Laboratories, Advanced Materials Laboratory, 1001 University Boulevard SE, Albuquerque, New Mexico 87105, USA, Fax: +1‐505‐272‐7336
| | - Leigh Anna M. Ottley
- Sandia National Laboratories, Advanced Materials Laboratory, 1001 University Boulevard SE, Albuquerque, New Mexico 87105, USA, Fax: +1‐505‐272‐7336
| | - Luke N. Brewer
- Sandia National Laboratories, New Mexico, P. O. Box 5800, Albuquerque, NM 87185‐1411, USA
| | - Jennifer Sigman
- Sandia National Laboratories, New Mexico, P. O. Box 5800, Albuquerque, NM 87185‐1411, USA
| | - Paul G. Clem
- Sandia National Laboratories, New Mexico, P. O. Box 5800, Albuquerque, NM 87185‐1411, USA
| | - Jacob J. Richardson
- University of California – Santa Barbara, Materials Department, Santa Barbara, CA 93106‐5050, USA
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Jun YW, Choi JS, Cheon J. Shape control of semiconductor and metal oxide nanocrystals through nonhydrolytic colloidal routes. Angew Chem Int Ed Engl 2007; 45:3414-39. [PMID: 16642516 DOI: 10.1002/anie.200503821] [Citation(s) in RCA: 1006] [Impact Index Per Article: 59.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Inorganic nanocrystals with tailored geometries exhibit unique shape-dependent phenomena and subsequent utilization of them as building blocks for the fabrication of nanodevices is of significant interest. Herein, we review the recent developments in the shape control of colloidal nanocrystals with a focus on the scientifically and technologically important semiconductor and metal oxide nanocrystals obtained by nonhydrolytic synthetic methods. Many structurally unprecedented motifs have been discovered including polyhedrons, rods and wires, plates and prisms, and other advanced shapes such as branched rods, stars, inorganic dendrites, and dumbbells. The currently proposed shape-guiding mechanisms are presented and the important pioneering studies on the assembly of shape-controlled nanocrystals into ordered superlattices and the fabrication of prototype advanced nanodevices are discussed.
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Affiliation(s)
- Young-wook Jun
- Department of Chemistry, Yonsei University, Seoul 120-749, Korea
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Boyle TJ, Sewell RM, Ottley LAM, Pratt HD, Quintana CJ, Bunge SD. Controlled synthesis of a structurally characterized family of sterically constrained heterocyclic alkoxy-modified titanium alkoxides. Inorg Chem 2007; 46:1825-35. [PMID: 17319735 DOI: 10.1021/ic0618798] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The reaction of [Ti(mu-ONep)(ONep)3]2 (ONep = OCH2C(CH3)3) with a series of heterocyclic methanol derivatives [tetrahydrofurfuryl alcohol (H-OTHF), thiophene methanol (H-OTPM), or 2-pyridylcarbinol (H-OPy)-collectively termed H-OR*], led to the isolation of a novel family of OR*-substituted titanium alkoxide precursors. Independent of the initial stoichiometry for the H-OTHF reaction, a monosubstituted, dinuclear species was isolated as [(ONep)3Ti(muc-OTHF)]2 (1). For 1, each Ti was octahedrally (Oh) bound by three terminal ONep ligands, one bidentate bridging OTHF ligand (muc-OTHF), and an oxygen from the other muc-OTHF ligand. For the OTPM derivatives, the product was identified as [(ONep)3Ti(mu-OTPM)]2 (2). For this ligand, the soft S atom does not bind to the Ti but the O atom does act as a bridge between the two trigonal bipyramidal bound Ti metal centers. The OPy system yielded (OPy)2Ti(OR)2 independent of the OR and the stoichiometry used [OR = ONep (3), OCHMe2 (4), OCMe3 (5)]. For 3-5, the two OPy ligands chelate to the Oh-bound Ti metal center with two terminal OR ligands. Compounds 1-5 were fully characterized using a variety of analytical techniques. An initial investigation of the proposed chemical stability of the '(OPy)2Ti' moiety of 3-5 to alcoholysis exchange pathways involving (i) alkyl alcohols, (ii) aryl alcohols, (iii) substituted phenols, (iv) H-OR* derivatives, and (v) silanols proved successful through the isolation of a novel family of structurally characterized (OPy)2Ti(OR')2 (7-24) compounds.
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Affiliation(s)
- Timothy J Boyle
- Sandia National Laboratories, Advanced Materials Laboratory, 1001 University Boulevard SE, Albuquerque, New Mexico 87106, USA.
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Hernandez-Sanchez BA, Boyle TJ, Lambert TN, Daniel-Taylor SD, Oliver JM, Wilson BS, Lidke DS, Andrews NL. Synthesizing biofunctionalized nanoparticles to image cell signaling pathways. IEEE Trans Nanobioscience 2007; 5:222-30. [PMID: 17181020 DOI: 10.1109/tnb.2006.886565] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
This minireview outlines the synthetic efforts, from our research group, to produce nanomaterials for use as imaging agents to study cell signaling pathways. An overview of our approach to the synthesis and biofunctionalization of metal, semiconductor, and ceramic nanomaterials is presented. The probes investigated include coinage metals, Cd-based, Ge(o), naturally occurring fluorescent (NOF) minerals, and Ln-based nanoparticles which were synthesized from novel metal alkoxide, amide, and alkyl precursors. We illustrate the applications of some of these materials as imaging probes to detect signaling pathway components and cellular responses to signals (apoptosis and degranulation) in inflammatory and cancer cells.
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Copsey MC, Panneerselvam A, Afzaal M, Chivers T, O'Brien P. Syntheses, X-ray structures and AACVD studies of group 11 ditelluroimidodiphosphinate complexes. Dalton Trans 2007:1528-38. [PMID: 17404654 DOI: 10.1039/b617429a] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Reactions of Na(tmeda)[N((i)Pr(2)PTe)(2)] with CuCl, AgI or AuCl (in the presence of PPh(3)) in THF produced the coinage metal ditelluroimidodiphosphinate complexes {Cu[N((i)Pr(2)PTe)(2)]}(3), (5), {Ag[N((i)Pr(2)PTe)(2)]}(6) (6) and Au(PPh(3))[N((i)Pr(2)PTe)(2)] (7), respectively. Complexes 5, 6 and 7 were characterized in the solid state by X-ray crystallography. Complex 5 is trimeric and exhibits a highly distorted Cu(3)Te(3) ring. In contrast, the Ag(I) complex 6 is a hexamer, and forms a twelve-membered Ag(6)Te(6) ring. The replacement of the (i)Pr groups on phosphorus by Ph results in an intriguing structural change to a tetramer with a boat-shaped Ag(4)Te(4) ring in {Ag[N(Ph(2)PTe)(2)}(4).2THF (8). The gold(I) complex 7 is monomeric. Aerosol-assisted chemical vapour deposition (AACVD) of compounds 5, 6 and 7 yields CuTe, Ag(7)Te(4), AuTe(2) and Au films, respectively. The films were grown at temperatures of 300-500 degrees C and characterized by X-ray powder diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive analysis of X-rays (EDAX).
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Affiliation(s)
- May C Copsey
- Department of Chemistry, University of Calgary, Calgary, AB, T2N 1N4, Canada
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Jun YW, Choi JS, Cheon J. Formkontrolle von Halbleiter- und Metalloxid-Nanokristallen durch nichthydrolytische Kolloidverfahren. Angew Chem Int Ed Engl 2006. [DOI: 10.1002/ange.200503821] [Citation(s) in RCA: 75] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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36
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Wang F, Xu G, Zhang Z, Xin X. Synthesis of Monodisperse CdS Nanospheres in an Inverse Microemulsion System Formed with a Dendritic Polyether Copolymer. Eur J Inorg Chem 2006. [DOI: 10.1002/ejic.200500603] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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37
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Liu X, Lin Y, Chen Y, An L, Ji X, Jiang B. New Organometallic Approach to Synthesize High-quality CdSe Quantum Dots. CHEM LETT 2005. [DOI: 10.1246/cl.2005.1284] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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