Glenn A. Fox

Lawrence Livermore National Security

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Theodore F. Baumann

Lawrence Livermore National Laboratory

A. J. Nelson

Lawrence Livermore National Laboratory

John G. Reynolds

Lawrence Livermore National Laboratory

L. J. Terminello

Pacific Northwest National Laboratory

K. Pakbaz

Lawrence Livermore National Laboratory

Andrew Vance

Capitol Technology University

Cortlandt G. Pierpont

University of Colorado Boulder

T. van Buuren

Lawrence Livermore National Laboratory

F. J. Himpsel

University of Wisconsin–Madison

I. Jiménez

Instituto de Ciencia de Materiales de Madrid

Cooperative Institutions

Lawrence Livermore National Laboratory

University of California, Davis

Lawrence Berkeley National Laboratory

Los Alamos National Laboratory

Lawrence Livermore National Security

Office of Scientific and Technical Information

Sandia National Laboratories

Northwestern University

National Technical Information Service

Stanford Synchrotron Radiation Lightsource

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Structural and electrochemical properties of binuclear complexes containing 1,10-phenanthroline-5,6-diolate as a bridging ligand

Inorganic Chemistry (1991)

Glenn A. Fox Samaresh Bhattacharya Cortlandt G. Pierpont

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStructural and electrochemical properties of binuclear complexes containing 1,10-phenanthroline-5,6-diolate as a bridging ligandGlenn A. Fox, Samaresh Bhattacharya, and Cortlandt G. PierpontCite this: Inorg. Chem. 1991, 30, 14, 2895–2899Publication Date (Print):July 1, 1991Publication History Published online1 May 2002Published inissue 1 July 1991https://pubs.acs.org/doi/10.1021/ic00014a014https://doi.org/10.1021/ic00014a014research-articleACS PublicationsRequest reuse permissionsArticle Views530Altmetric-Citations52LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InRedditEmail Other access optionsGet e-AlertscloseSupporting Info (1)»Supporting Information Supporting Information Get e-Alerts

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10.1021/ic00014a014

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Citations (58)

star-Porphyrazines: synthetic, structural, and spectral investigation of complexes of the polynucleating porphyrazineoctathiolato ligand

Journal of the American Chemical Society (1992)

Christopher S. Velázquez Glenn A. Fox William E. Broderick K. A. Andersen Oren P. Anderson

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTstar-Porphyrazines: synthetic, structural, and spectral investigation of complexes of the polynucleating porphyrazineoctathiolato ligandChristopher S. Velazquez, Glenn A. Fox, William E. Broderick, Kevin A. Andersen, Oren P. Anderson, Anthony G. M. Barrett, and Brian M. HoffmanCite this: J. Am. Chem. Soc. 1992, 114, 19, 7416–7424Publication Date (Print):September 1, 1992Publication History Published online1 May 2002Published inissue 1 September 1992https://doi.org/10.1021/ja00045a013Request reuse permissionsArticle Views447Altmetric-Citations96LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InReddit PDF (2 MB) Get e-AlertscloseSupporting Info (1)»Supporting Information Supporting Information Get e-Alerts

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10.1021/ja00045a013

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Citations (112)

Synthesis and Characterization of Copper-Doped Carbon Aerogels

Langmuir (2002)

Theodore F. Baumann Glenn A. Fox Joe H. Satcher Noriko Yoshizawa Ruowen Fu

We have prepared carbon aerogels (CAs) doped with copper through sol−gel polymerization of formaldehyde with the potassium salt of 2,4-dihydroxybenzoic acid, followed by ion exchange with Cu(NO3)2, supercritical drying with liquid CO2, and carbonization at 1050 °C under a N2 atmosphere. The materials were characterized by elemental analysis, nitrogen adsorption, high-resolution transmission electron microscopy, and X-ray diffraction. Results obtained indicate that this approach is an effective method for controlling both the amount and the distribution of a desired metal species within the carbon framework. We also found that carbonization of the copper-doped organic aerogels results in the formation of spherical copper nanoparticles within the carbon framework of the aerogel. The copper nanoparticles have a cubic crystalline structure and range in size from 10 to 50 nm. The Cu-doped CAs retain the overall open cell structure of metal-free CAs, exhibiting high surface areas and pore diameters in the micro- and mesoporic region.

Supercritical drying

Carbon fibers

10.1021/la0259003

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Citations (123)

Polymer Pendant Crown Thioethers for Removal of Mercury from Acidic Waste Streams-Characterization and Extraction Performance

MRS Proceedings (2002)

Theodore F. Baumann Glenn A. Fox A. J. Nelson Joy C. Andrews Darrell B. Bishop

Thioether

Mercury

Hydroxymethyl

10.1557/proc-757-ii11.9

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Citations (1)

Polymer pendant crown thioethers: synthesis, characterization and Hg2+ extraction studies of polymer-supported thiacrowns ([14]aneS4 and [17]aneS5)

Reactive and Functional Polymers (2000)

Theodore F. Baumann John G. Reynolds Glenn A. Fox

Divinylbenzene

Polystyrene

10.1016/s1381-5148(99)00085-1

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Citations (44)

Dendritic Methodology Applied to the Prediction, Design, and Synthesis of Sol-Gel Materials

ACS symposium series (2002)

Theodore F. Baumann Glenn A. Fox Andrew Vance

Nanostructured materials can be formed via the sol-gel polymerization of inorganic or organic monomer systems. While sol-gel chemistry offers many opportunities to investigate new material compositions, it suffers from an inability to separate the process of cluster (sol) formation from gelation. This limitation results in structural deficiencies in the gel state that ultimately impact the physical properties of the dried xerogel, aerogel, or nanocomposite. We are utilizing dendrimer methodology to separate the cluster formation step from the gelation process so that new nanostructured materials with controlled topologies can be produced. The dendrimers are used as pre-formed clusters of known size that can be cross-linked to form the gel network. Toward this goal, we are synthesizing functionalized dendrimers as gel precursors that allow for greater control over the molecular scaffolding of the resulting gel.

10.1021/bk-2002-0812.ch015

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Accelerated Degradation Studies of MEH-PPV*

H. B. Radousky A. D. Madden K. Pakbaz T.W. Hagler H. W. H. Lee

MEH-PPV is of interest due to its potential use as the active element in electroluminescent devices. 1 The usefulness of these devices is limited at the present due to a variety of degradation mechanisms. 2 - 3 We have studied one class of degradation in MEH-PPV using photoluminescence (PL).

Degradation

10.1364/otfa.1995.tuc.4

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XAS and XPS Characterization of Monolayers Derived from a Dithiol and Structurally Related Disulfide-Containing Polyamides

Langmuir (2002)

Andrew Vance Trevor M. Willey A. J. Nelson T. van Buuren C. Bostedt

X-ray absorption spectroscopy and X-ray photoemission spectroscopy have been used to examine sulfur−gold bond formation in monolayers derived from a dithiol monomer and related disulfide-containing polyamides. These compounds were designed to allow the molecules to adsorb to gold through two terminal sulfurs, forming surface-attached loops. Element and site-specific density of unoccupied electronic states were probed by X-ray absorption spectroscopy at the C 1s, N 1s, O 1s (K-edge), and S 2p (L2,3-edge) absorption edges. Photoemission measurements of the C 1s, N 1s, O 1s, and S 2p core lines were also used to estimate relative coverage, to confirm layer formation, and to evaluate chemical bonding of the monomer and polyamide to the gold-coated substrates. In the case of the dithiol monomer, the spectroscopic evidence clearly shows that most of the molecules adsorb through a single thiol end. The disulfide-containing precursors, in contrast to the monomer, attach to the surface through both sulfurs to form the anticipated surface-attached loop.

Dithiol

X-ray absorption spectroscopy

10.1021/la025631g

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Citations (49)

Optimizing Pt/TiO$_{2}$ templates for textured PZT growth and MEMS devices

Bulletin of the American Physical Society (2013)

Daniel M. Potrepka Glenn A. Fox L. Sánchez-Silva Ronald G. Polcawich

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Polymer pendant crown thioethers for removal of mercury from acidic wastes: synthesis, characterization and application

John G. Reynolds Theodore F. Baumann A. J. Nelson Glenn A. Fox

Removal of mercury ions from industrial waste streams is a difficult and expensive problem requiring an efficient and selective extractant that is resistant to corrosive conditions. We have now developed an acid-resistant thiacrown polymer that has potential utility as a selective and cost-effective Hg{sup 2+} extractant. Copolymerization of a novel C-substituted thiacrown, N,N-(4-vinylbenzylmethyl)-2-aminomethyl-1,4,8,11,14-pentathiacycloheptadecane, with DVB (80% divinylbenzene) using a radical initiator generated a highly cross-linked polymer containing pendant thiacrowns. Mercury extraction capabilities of the polymer were tested in acidic media (pH range: 1.5 to 6.2) and the extraction of Hg{sup 2+} was determined to be 95% at a mixing time of 30 minutes. The thiacrown polymer was also determined to be selective for Hg{sup 2+}, even in the presence of high concentrations of competing ions such as Pb{sup 2+}, Cd{sup 2+}, Al{sup 3}, and Fe{sup 3+}. The bound Hg{sup 2+} ions can then be stripped from the polymer, allowing the polymer to be reused without significant loss of loading capacity. The binding of Hg{sup 2+} to the polymer has been examined by X-ray photoemission spectroscopy. The thiacrown appears unaffected by incorporation into the polymer and the Hg{sup 2+} appears to be bound to the polymer complex in a similar mannermore » as Hg{sup 2+} is bound in monomeric thiacrowns containing five sulfur atoms.« less

Mercury

Divinylbenzene

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