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Title: The synthesis of bis(dimolybdenum)-1,3,5,7-tetrakis(2-pyridylimino) benzodipyrrole as a precursor for an inorganic, quadruple bond containing polymer.
Creator: Kavanaugh, David John, Florida Atlantic University, Baird, Donald M., Charles E. Schmidt College of Science, Department of Chemistry and Biochemistry
Abstract/Description: The planar, dinuclear, tridentate ligands, 1,3,5,7-tetrakis(2-pyridylimino)benzodipyrrole (TAII) and 1,3,5,7-tetrakis(4,6-dimethyl-2-pyridylimino)benzodipyrrole (DiMeTAII) were synthesized and characterized as were all intermediates characterized by both infrared and 1H-NMR spectra. Evidence is presented for the formation of Mo4(OAc)6-(DiMeTAII) (I), the dinuclear analog of Mo2(OAc)3-BAII using UV/Vis to show the delta--->delta* transition typical of the quadruple bond and for the...
Show moreThe planar, dinuclear, tridentate ligands, 1,3,5,7-tetrakis(2-pyridylimino)benzodipyrrole (TAII) and 1,3,5,7-tetrakis(4,6-dimethyl-2-pyridylimino)benzodipyrrole (DiMeTAII) were synthesized and characterized as were all intermediates characterized by both infrared and 1H-NMR spectra. Evidence is presented for the formation of Mo4(OAc)6-(DiMeTAII) (I), the dinuclear analog of Mo2(OAc)3-BAII using UV/Vis to show the delta--->delta* transition typical of the quadruple bond and for the determination of percent molybdenum which is consistent with the proposed structure. A review of recent studies into the field of quadruply bonded metal containing polymers will be discussed along with application of compound (I) in this field.
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Date Issued: 1993
PURL: http://purl.flvc.org/fcla/dt/14950
Subject Headings: Ligands (Biochemistry), Metal-metal bonds, Diffusion bonding (Metals)
Format: Document (PDF)

Title: Hydrogen generation from sea water by meansof a metal hydrolysis process.
Creator: Wang, Tsen C., Tan, C. K., Harbor Branch Oceanographic Institute
Date Issued: 1990
PURL: http://purl.flvc.org/fau/fd/FA00007251
Subject Headings: Seawater, Hydrolysis, Hydrogen, Metals
Format: Document (PDF)

Title: Temperature effects on baralyme, sodasorb, and lithium hydroxide.
Creator: Wang, Tsen C., Harbor Branch Oceanographic Institute
Date Issued: 1975
PURL: http://purl.flvc.org/FCLA/DT/3318942
Subject Headings: Carbon dioxide removal, Alkali metal hydroxides, Lithium hydroxide, Alkali metals
Format: Document (PDF)

Title: Synthesis of new materials containing metal-metal quadruple bonds: Complexes containing 2,2';6'2''-terpyridine, 4'-phenyl-2,2';6'2''-terpyridine, 2,3,5,6-tetrakis(alpha-pryidyl)pyrazine, and 1,3-bis(4-methylimino)isoindoline.
Creator: Hu, Chiwei, Florida Atlantic University, Baird, Donald M., Charles E. Schmidt College of Science, Department of Chemistry and Biochemistry
Abstract/Description: The presence of multiply bonded dimetal units in materials offers opportunities for tuning properties of solids. Materials containing molybdenum-molybdenum quadruple bonds have recently begun being reported. This thesis reports the products of the reactions of dimethyl sulfide (DMS), acetonitrile (ACN) and acetate complexes, Mo2CI4(DMS)4, Mo2(ACN)10ABF4, and Mo2(0Ac)4 with 2,2';6,2"-terpyridine, 4'-phenyl 2,2';6,2"-terpyridine, 2,3,5,6-tetrakis (alpha-pyridyl) pyrazine and 1,3-bis(4...
Show moreThe presence of multiply bonded dimetal units in materials offers opportunities for tuning properties of solids. Materials containing molybdenum-molybdenum quadruple bonds have recently begun being reported. This thesis reports the products of the reactions of dimethyl sulfide (DMS), acetonitrile (ACN) and acetate complexes, Mo2CI4(DMS)4, Mo2(ACN)10ABF4, and Mo2(0Ac)4 with 2,2';6,2"-terpyridine, 4'-phenyl 2,2';6,2"-terpyridine, 2,3,5,6-tetrakis (alpha-pyridyl) pyrazine and 1,3-bis(4-methylimino)isoindoline. Among these ligands, 2,3,5,6-tetrakis (alpha-pyridyl) pyrazine may lead to linear arrays of metal-metal bonds as well as other ordered structures. 1H-NMR, electronic absorption, and infrared data will be quoted to support any structural assignments.
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Date Issued: 1995
PURL: http://purl.flvc.org/fcla/dt/15212
Subject Headings: Molybdenum compounds, Metal-metal bonds, Electronic structure
Format: Document (PDF)

Title: Phytoremediation of heavy metals in aquaticsystem.
Creator: Wang, Tsen C., Weissman, J. C., Harbor Branch Oceanographic Institute
Date Issued: 1998
PURL: http://purl.flvc.org/fau/fd/FA00007420
Subject Headings: Phytoremediation, Heavy metals, Adsorption, Phormium, Haloragaceae
Format: Document (PDF)

Title: Bioremoval of toxic elements with aquatic plants and algae.
Creator: Wang, Tsen C., Weissman, J. C., Ramesh, G., Varadarajan, R., Benemann, J. R.
Date Issued: 1995
PURL: http://purl.flvc.org/fau/fd/FA00007265
Subject Headings: Bioremediation, Heavy metals, Algae, Aquatic plants
Format: Document (PDF)

Title: Heavy Metal Sorption by Aquatic Plants in Taiwan.
Creator: Lee, C.-L., Wang, Tsen C., Hsu, C.-H., Chiou, A.-A., Harbor Branch Oceanographic Institute
Date Issued: 1998
PURL: http://purl.flvc.org/FCLA/DT/3169902
Subject Headings: Heavy metals --Environmental aspects, Heavy-metal tolerant plants, Plants --Effect of heavy metals on, Heavy metals--Absorption and adsorption, Water --Pollution
Format: Document (PDF)

Title: Heavy metals removal with water milfoil (Myriophyllum spicatum) inconstructed wetland.
Creator: Wang, Tsen C., Ramesh, G., Weissman, J. C., Varadarajan, R., Benemann, J. R., Harbor Branch Oceanographic Institute
Date Issued: 1995
PURL: http://purl.flvc.org/fau/fd/FA00007339
Subject Headings: Heavy metals, Haloragaceae, Myriophyllum, Constructed wetlands
Format: Document (PDF)

Title: The construction of metal-organic hybrid materials based on benzophenone-4,4'-dicarboxylic acid.
Creator: Zribi, Dan, Torres, Melissa, De Lill, Daniel T.
Date Issued: 2013-04-05
PURL: http://purl.flvc.org/fcla/dt/3361243
Subject Headings: Dicarboxylic acids, Benzophenones, Lanthanides, Transition metals
Format: Document (PDF)

Title: Dependence of spectroscopic and electrochemical properties of dimolybdenum multiimine complexes on ligand structure.
Creator: Yang, Fengli, Florida Atlantic University, Baird, Donald M.
Abstract/Description: The complexes MoX4(Multiimine)2, where X = Cl, Br, I and Multiimine = dimethyl-bipyridine, bipyridine, phenanthroline, bipyrazine, bipyridazine and bipyrimidine, have been prepared. The product complexes apparently contain non-bridged quadruple molybdenum-molybdenum bonds. Each molybdenum is coordinated to a bidentate diimine and two halogen atoms. An electronic absorption study reveals an important trend that the intensity of the delta-->delta* transition increases with decreasing energy....
Show moreThe complexes MoX4(Multiimine)2, where X = Cl, Br, I and Multiimine = dimethyl-bipyridine, bipyridine, phenanthroline, bipyrazine, bipyridazine and bipyrimidine, have been prepared. The product complexes apparently contain non-bridged quadruple molybdenum-molybdenum bonds. Each molybdenum is coordinated to a bidentate diimine and two halogen atoms. An electronic absorption study reveals an important trend that the intensity of the delta-->delta* transition increases with decreasing energy. This shows the energy of this band is determined by mixing of this transition with a metal-to-ligand charge transfer transition. An EEC type mechanism is proposed for the redox behavior of these compounds on the basis of an electrochemical study and some consistent results are obtained by correlating the oxidation potentials with the delta-->delta* transition energies. Also, fairly good correlations of both the delta-->delta* transition energies and the oxidation potentials with pk(a) of L are obtained.
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Date Issued: 1991
PURL: http://purl.flvc.org/fcla/dt/14724
Subject Headings: Molybdenum, Diffusion bonding (Metals), Ligand binding (Biochemistry)
Format: Document (PDF)

Title: Deformation and fatigue crack growth of iron(81) boron(13.5) silicon(3.5) carbon(2) amorphous metal using magnetostrictive behavior to generate delta K.
Creator: Willard, Alan Eugene., Florida Atlantic University, Salivar, Gary C., College of Engineering and Computer Science, Department of Ocean and Mechanical Engineering
Abstract/Description: The deformation and fatigue crack growth behavior of amorphous metals are presented. A discussion of magnetic domains, and their influence on magnetostriction is also included. Testing of Metglas 2605SC, utilizing magnetostriction to generate DeltaK, indicated near-threshold (Region I) fatigue crack growth behavior for as-cast and annealed specimens. A Delta Kth on the order of 0.6-1.0 kg/mm^3/2 was also indicated. The best crack growth rate behavior was obtained for transverse field-annealed...
Show moreThe deformation and fatigue crack growth behavior of amorphous metals are presented. A discussion of magnetic domains, and their influence on magnetostriction is also included. Testing of Metglas 2605SC, utilizing magnetostriction to generate DeltaK, indicated near-threshold (Region I) fatigue crack growth behavior for as-cast and annealed specimens. A Delta Kth on the order of 0.6-1.0 kg/mm^3/2 was also indicated. The best crack growth rate behavior was obtained for transverse field-annealed specimens. Significant variability in the data, however, prevented a determination of Delta Kth for this condition. A life prediction model based on a Paris equation was developed. Crack growth data were consistently lower than predicted by the Region II model, which would be expected for near-threshold data. Fractographic analyses supported the influence of domains on crack growth behavior. The scatter in the Region I data appears to be contributed by the effects of domains and domain walls.
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Date Issued: 1991
PURL: http://purl.flvc.org/fcla/dt/14736
Subject Headings: Fracture mechanics, Metals--Fatigue, Magnetostriction
Format: Document (PDF)

Title: THE PROPERTIES OF CALCAREOUS DEPOSITS FORMED ON METAL SURFACE IN SEA WATER UNDER CATHODIC PROTECTION AT DIFFERENT POTENTIALS AND CURRENT DENSITIES.
Creator: Luo, Jiunn-Shyong, Florida Atlantic University, Lee, Rupert U., College of Engineering and Computer Science, Department of Ocean and Mechanical Engineering
Abstract/Description: The influence of impressed current density and potential upon the nature of calcareous deposits formed . on a cathodic steel surface has been investigated. The experiments included potentiostatic, galvanostatic and mixed mode combined galvanostatic and potentiostatic techniques for affecting polarization. Specific attention was focused upon the thickness, morphology and composition of the deposits. A Mg 2+ depletion model has been developed as a possible explanation for the nucleation and...
Show moreThe influence of impressed current density and potential upon the nature of calcareous deposits formed . on a cathodic steel surface has been investigated. The experiments included potentiostatic, galvanostatic and mixed mode combined galvanostatic and potentiostatic techniques for affecting polarization. Specific attention was focused upon the thickness, morphology and composition of the deposits. A Mg 2+ depletion model has been developed as a possible explanation for the nucleation and growth behavior of calcareous deposits formed under combined mode operation.
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Date Issued: 1987
PURL: http://purl.flvc.org/fcla/dt/14376
Subject Headings: Metals--Cathodic protection, Chemical oceanography, Calcium
Format: Document (PDF)

Title: Novel multiplexer-based architectures for full adder design.
Creator: Al-Sheraidah, Abdulkarim K., Florida Atlantic University, Wang, Yuke
Abstract/Description: We propose five new Multiplexer-Based architectures for 1-bit full adder design. Using a 2-transistors multiplexer gate to implement the first architecture, we are able to produce a 12-transistor full adder cell, Comparing it to four different 10-transistors low-power full adder cells reported previously in literature, the new adder cell named MBA1-12T out performs all of them in power consumption and speed. By implementing those architectures using the 2-input CMOS multiplexer with pass...
Show moreWe propose five new Multiplexer-Based architectures for 1-bit full adder design. Using a 2-transistors multiplexer gate to implement the first architecture, we are able to produce a 12-transistor full adder cell, Comparing it to four different 10-transistors low-power full adder cells reported previously in literature, the new adder cell named MBA1-12T out performs all of them in power consumption and speed. By implementing those architectures using the 2-input CMOS multiplexer with pass-gates, five new high-performance full adder cells are obtained. Those new adder cells are tested along with the conventional 28-transistor CMOS adder cell. Testing results shows that the new adder cells have higher speed and lower power delay product values than the conventional 28-transistor CMOS adder cell.
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Date Issued: 2000
PURL: http://purl.flvc.org/fcla/dt/12667
Subject Headings: Metal oxide semiconductors, Complementary, Digital integrated circuits
Format: Document (PDF)

Title: IMPACT BEHAVIOR OF CONCRETE BEAMS WITH CORRODING REINFORCING STEEL.
Creator: DESNOYERS, JEAN-FRANCOIS., Florida Atlantic University, Reddy, Dronnadula V.
Abstract/Description: This thesis presents an analytical and experimental investigation of the remaining impact strength of concrete beams with corroding reinforcement. Concrete beams were subjected to impact using a centrally loaded instrumented dropweight system. Three different amounts of steel corrosion were used to simulate ten, twenty, and thirty years of seawater exposure. The first part in the analytical investigation involved the use of the finite element code ADINA. The second included development of...
Show moreThis thesis presents an analytical and experimental investigation of the remaining impact strength of concrete beams with corroding reinforcement. Concrete beams were subjected to impact using a centrally loaded instrumented dropweight system. Three different amounts of steel corrosion were used to simulate ten, twenty, and thirty years of seawater exposure. The first part in the analytical investigation involved the use of the finite element code ADINA. The second included development of three physical models; the first based on a beam impact equation of forced vibration for a pin-ended beam with center span impact, the second a two-degree-of-freedom model, and the third a three-degree-of-freedom model taking into account the stiffness of the supports for the impacted beam specimens. The different analytical results showed good correlation with the test values of the impact energies. Also, the energy values for the different corrosion periods obtained from the ADINA analysis compared well with experimental ones.
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Date Issued: 1987
PURL: http://purl.flvc.org/fcla/dt/14371
Subject Headings: Concrete beams, Metals--Impact testing
Format: Document (PDF)

Title: Heavy metals removal by a promising locally available aquatic plant, Najas graminea del., in Taiwan.
Creator: Lee, C.-L., Wang, Tsen C., Lin, C-K., Mok, Hin-Kiu, Harbor Branch Oceanographic Institute
Date Issued: 1999
PURL: http://purl.flvc.org/FCLA/DT/3172963
Subject Headings: Heavy metals, Heavy metals --Environmental aspects, Bioremediation, Aquatic plants, Green technology
Format: Document (PDF)

Title: Screening of aquatic plants and algae for removal of toxic heavy metals.
Creator: Wang, Tsen C., Ramesh, G., Weissman, J. C., Varadarajan, R., Benemann, J. R., Harbor Branch Oceanographic Institute
Date Issued: 1996
PURL: http://purl.flvc.org/fau/fd/FA00007336
Subject Headings: Heavy metals, Aquatic plants, Algae, Heavy metals--Absorption and adsorption.
Format: Document (PDF)

Title: Parameters for removal of toxic heavy metals by water milfoil (Myriophyllum spicatum).
Creator: Wang, Tsen C., Weissman, J. C., Ramesh, G., Varadarajan, R., Benemann, J. R., Harbor Branch Oceanographic Institute
Date Issued: 1996
PURL: http://purl.flvc.org/FCLA/DT/3318889
Subject Headings: Heavy metals, Myriophyllum spicatum, Eurasian watermilfoil, Heavy metals--Absorption and adsorption
Format: Document (PDF)

Title: Design, Synthesis and Applications of Lanthanide Metal-Organic Frameworks based on 1,2,4,5-benzenetetracarboxylic acid.
Creator: Dixon, Joseph William, De Lill, Daniel T., Florida Atlantic University, Charles E. Schmidt College of Science, Department of Chemistry and Biochemistry
Abstract/Description: The organic linker 1,2,4,5-benzenetetracarboxylic acid (BTC) has been widely used in the construction of lanthanide metal-organic frameworks (MOFs) due the high symmetry and versatile nature of its structure. Under identical hydrothermal reaction conditions, it was discovered that lanthanide BTC MOFs will form one of four unique structures based on its location in the series (La-Sm, Eu-Tb, Dy-Tm, Yb-Lu). This is uncommon in LOF materials, as in many cases the same compound can be produced for...
Show moreThe organic linker 1,2,4,5-benzenetetracarboxylic acid (BTC) has been widely used in the construction of lanthanide metal-organic frameworks (MOFs) due the high symmetry and versatile nature of its structure. Under identical hydrothermal reaction conditions, it was discovered that lanthanide BTC MOFs will form one of four unique structures based on its location in the series (La-Sm, Eu-Tb, Dy-Tm, Yb-Lu). This is uncommon in LOF materials, as in many cases the same compound can be produced for all of the lanthanides or two different structures may be observed for the first and second half of the series. Descriptions and comparisons of these structures as discussed herein, noticeably the decrease in coordination number and the lanthanide-oxygen bond lengths as the lanthanide atomic number increases. This thesis also attempts to use these compounds to catalyze a model mixed-aldol reaction. Two closely related BTC compounds from yttrium and uranium are also presented. The structure of the yttrium BTC MOFs was identical to that of the Eu, Gd and Tb compounds.
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Date Issued: 2015
PURL: http://purl.flvc.org/fau/fd/FA00004494, http://purl.flvc.org/fau/fd/FA00004494
Subject Headings: Coordination compounds, Inorganic compounds -- Synthesis, Organorare earth metal compounds, Rare earth metals
Format: Document (PDF)

Title: Toward lanthanide containing coordination polymers and nanomaterials.
Creator: Greig, Natalie E., De Lill, Daniel T., Charles E. Schmidt College of Science, Department of Chemistry and Biochemistry
Abstract/Description: The focus of this thesis is to develop lanthanide (Ln) luminescent materials through the exploration of coordination polymers and nanomaterials. Herein, dimethyl-3,4- furanedicarboxylate acid undergoes hydrolysis under hydrothermal conditions to form coordination polymers with lanthanide ions. The resulting coordination polymers exhibited luminescent properties, with quantum yields and lifetimes for the Eu-and Tb-CP of 1.14+-0.32% and 0.387=-0.0001 mx, and 3.33=-0.82% and 0.769=-0.006 ms,...
Show moreThe focus of this thesis is to develop lanthanide (Ln) luminescent materials through the exploration of coordination polymers and nanomaterials. Herein, dimethyl-3,4- furanedicarboxylate acid undergoes hydrolysis under hydrothermal conditions to form coordination polymers with lanthanide ions. The resulting coordination polymers exhibited luminescent properties, with quantum yields and lifetimes for the Eu-and Tb-CP of 1.14+-0.32% and 0.387=-0.0001 mx, and 3.33=-0.82% and 0.769=-0.006 ms, respectively. While the incorporation of lanthanides was not achieved in this work, progress toward the production of pure phase InP in the nanoregime has been made, using a low-cost, hydrothermal method. Through SEM and PXRD conflict, it is believed that pure INP particles with a size range of 58-81 nm were successfully synthesized.
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Date Issued: 2012
PURL: http://purl.flvc.org/FAU/3358558
Subject Headings: Metallic composites, Speciation, Lanthanide shift reagents, Rare earth metals catalysts, Nanostructured materials
Format: Document (PDF)

Title: Synthesis and photophysical measurements of a series of lanthanide-benzenedicarboxylate coordination polymers.
Creator: Clark, Jessica Montressa., Charles E. Schmidt College of Science, Department of Chemistry and Biochemistry
Abstract/Description: Within solid-state chemistry, coordination polymers have gained interest for use in various applications such as sensing, catalysis, display technology, hydrogen storage, etc. The use of lanthanide ions in these materials provides a mean of exploring how structure may affect luminescence efficiency. In this study, the photophysics of several lanthanide benzenecarboxylates was studied. This data combined with data from other coordination polymers created in our lab indicate that the...
Show moreWithin solid-state chemistry, coordination polymers have gained interest for use in various applications such as sensing, catalysis, display technology, hydrogen storage, etc. The use of lanthanide ions in these materials provides a mean of exploring how structure may affect luminescence efficiency. In this study, the photophysics of several lanthanide benzenecarboxylates was studied. This data combined with data from other coordination polymers created in our lab indicate that the established guidelines for producing highly efficient materials may not correlate directly from solution to the solid state and that structure may also play a role.
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Date Issued: 2013
PURL: http://purl.flvc.org/fcla/dt/3362332
Subject Headings: Rare earth metals catalysts, Metallic composites, Speciation, Lanthanide shift reagents, Organic compounds, Synthesis, Polymers, Biotechnology
Format: Document (PDF)

FAU Theses and Dissertations (38)	+ -
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