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Dissertations / Theses on the topic 'Phosphonic acid'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

McNichols, Brett William. "Synthesis and Application of Styryl Phosphonic and Cinnamic Acid Derivatives." Thesis, Colorado School of Mines, 2017. http://pqdtopen.proquest.com/#viewpdf?dispub=10624231.

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<p> Styryl phosphonic and cinnamic acid derivatives have been gaining attention as key candidates to modulate specific electrode properties in organic electronic devices such as work function, surface energies, wettability, and electron charge transfer kinetics that lead to increased efficiency, operational range, and device lifetimes. Very few of these acids are commercially available. The driving factor behind this research is to explore simple, high yield, and inexpensive synthetic routes towards synthesis of these acids. Herein, the novel synthesis of vinyl phosphonic acids (VPAs) and thei

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2

Oquendo, Galarza Luis E. "Modification of Indium Tin Oxide Surfaces with Phosphonic Acid Functionalized Phthalocyanines." Diss., The University of Arizona, 2014. http://hdl.handle.net/10150/344225.

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The overall efficiency of organic photovoltaics cells (OPVs) is influenced by the nature of the charge injection barrier at the transparent conducting oxide (TCO) bottom contact. Modification of the transparent conducting oxide (TCO)/organic interface with an electroactive molecular monolayer will potentially create a robust ohmic contact that will influence the efficiency of hole injection into the TCO. Asymmetric zinc Phthalocyanines (ZnPc) with a flexible phosphonic acid (PA) linker have been synthesized and used to modify indium tin oxide (ITO) surfaces. The adsorption of PA functionalized

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3

Centrone, Charla Anne. "Synthesis of C-phosphonic acid, C-phosphinic acid, and C-sulfone analogs of decaprenolphosphoarabinose inhibitors of mycobacterial arabinosyltransferases /." Connect to this title online, 2003. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1054062979.

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Thesis (Ph. D.)--Ohio State University, 2003.<br>Document formatted into pages; contains xvi, 371 p.; also contains graphics. Includes bibliographical references. Abstract available online via OhioLINK's ETD Center; full text release delayed at author's request until 2005 May 5.

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4

Sebah, Majda. "Novel Synthetic and Evaluation Studies on Phosphonic Acid Functlonalised Periodic Hybrid Materials." Thesis, Queen Mary, University of London, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.520461.

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5

Hotchkiss, Peter J. "The design, synthesis, and use of phosphonic acids for the surface modification of metal oxides." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/31836.

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Thesis (Ph.D)--Chemistry and Biochemistry, Georgia Institute of Technology, 2009.<br>Committee Chair: Marder, Seth; Committee Member: Bredas, Jean-Luc; Committee Member: Kroger, Nils; Committee Member: Perry, Joe; Committee Member: Sandhage, Ken. Part of the SMARTech Electronic Thesis and Dissertation Collection.

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6

Senior, Geoffrey David. "The role of dissolved metal ionic species in the phosphonic acid flotation of cassiterite." Thesis, University of British Columbia, 1987. http://hdl.handle.net/2429/27527.

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The techniques of X-ray photoelectron spectroscopy (XPS), secondary ionization mass spectroscopy, chemical abstraction analysis and microelectrophoresis were used to confirm the existence of iron films on cassiterite grains recovered from the tin concentrator of Renison Limited (Australia). All analyses indicated the level of surface iron contamination to be far in excess of that characteristic of the bulk mineral lattice. No evidence was found in XPS analyses to support the contention that this iron represented lattice iron that had accumulated on the surface due to migration through the latt

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7

Wood, Christopher Alan. "Theoretical investigation of polar zinc oxide surface modification via phosphonic acid self-assembled monolayers." Thesis, Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/43584.

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The interface of a zinc-terminated polar zinc oxide surface (0002) with a series of chemisorbed fluorinated benzylphosphonic acids has been studied using density functional theory. The calculations indicate that there is a substantial change in the binding energies and work function modification depending on the binding motif. The results also indicate that there is a pronounced difference in the magnitude and trends of the factors determining the total change in work function. The oxygen core-level binding shifts have been calculated and compared to available experimental data.

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8

Labalme, Etienne. "Synthesis and characterizations of new fluorinated membranes bearing pendant phosphonic acid groups for PEMFC application." Thesis, Montpellier, Ecole nationale supérieure de chimie, 2013. http://www.theses.fr/2013ENCM0013.

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Ce travail de thèse s'inscrit dans la continuité des travaux de recherche réalisés sur le développent de nouvelles membranes échangeuses de protons pour piles à combustibles de type PEMFC, porteuses de groupements protogènes acides phosphoniques. L'objectif de ces travaux est d'apporter des solutions permettant l'amélioration des propriétés physico-chimiques d'un copolymère phosphoné, le poly(CTFE-alt-VEPA) obtenu à partir de la polymérisation radicalaire de vinyl éthers et de CTFE. La première stratégie employée est une stratégie Blend. Elle consiste à ajouter un polymère fluoré commercial, l

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9

Helfrich, Marcus Robert. "Preliminary investigations into the development of novel layered phosphonic acid vesicles for targeted drug delivery applications /." view abstract or download file of text, 2002. http://wwwlib.umi.com/cr/uoregon/fullcit?p3045088.

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Thesis (Ph. D.)--University of Oregon, 2002.<br>Typescript. Includes vita and abstract. Includes bibliographical references (leaves 184-193). Also available for download via the World Wide Web; free to University of Oregon users. Address: http://wwwlib.umi.com/cr/uoregon/fullcit?p3045088.

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10

Wells, Christopher J. "The equilibrium characteristics of aqueous cobalt and nickel mixtures with the extractant bis-(2-ethylhexyl)-phosphonic acid." Thesis, University of Ottawa (Canada), 1991. http://hdl.handle.net/10393/7545.

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In this work, binary solutions of cobalt and nickel in aqueous ammonium sulfate solutions were extracted using a simple shake-out technique with a mixed organic phase consisting of the extractant bis-(2-ethylhexyl)phosphonic acid (PC-88A), the modifier tributyl phosphate, and the diluent Esso Varsol DX3641. It was found that the optimum pH for the separation of cobalt and nickel was 5.0, and that the separation of the ions was a complex function of the porportion of cobalt and nickel in the equilibrium phases. The maximum metal loading of the organic phase, based on the population of dimer ext

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11

Wharmby, Michael T. "Synthesis of porous metal phosphonate frameworks for applications in gas separation and storage." Thesis, University of St Andrews, 2012. http://hdl.handle.net/10023/3450.

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Porous metal phosphonate framework materials were synthesised by solvothermal reaction of bis(α-aminomethylenephosphonic acid) ligands with divalent and trivalent metal cations. The syntheses and characterisation by NMR and, where possible, single crystal X-ray diffraction of seven bisphosphonic acid ligands, including N,N′-piperazinebis(methylenephosphonic acid) (H₄L), its racemic and enantiopure (R) 2-methyl (H₄L′ and R-H₄L′) and 2,5-dimethyl (H₄L′′) derivatives, and N,N′-4,4′-bipiperidinebis(methylenephosphonic acid) (H₄LL) are reported. Syntheses of the known phase Y₂(LH₂)₃·5H₂O and the ne

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12

Romson, Tomas. "Triazine-based adhesive : An adherence study on clinically used metal surfaces." Thesis, KTH, Ytbehandlingsteknik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-278862.

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When a material is adhered onto a specific surface it is relevant to know how to make thematerial stay on the surface. By investigating different primers to use with a triazine-basedadhesive, further improvements to using the adhesive on metals can be achieved. This studyfound that an adhesive of (2,4,6-trioxo-1,3,5-triazinane-1,3,5-triyl)tris(ethane-2,1-diyl)tris(3-mercaptopropanoate) (TEMPIC) and 1,3,5-triallyl-1,3,5-triazinane-2,4,6-trione(TATATO) adhered to titanium and stainless steel, two clinically used metal surfaces. Itfurther found that between a phosphonic acid primer, a biomimetic

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13

Tramaux, Axel. "Synthèse de nouveaux superplastifiants phosphonés et évaluation de leur efficacité sur des suspensions de carbonate de calcium." Thesis, Montpellier, 2018. http://www.theses.fr/2018MONTS009/document.

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Les superplastifiants sont des adjuvants permettant de considérablement fluidifier les pâtes cimentaires sans en changer le rapport eau/ciment. Parmi eux, les polycarboxylates sont les plus utilisés et les plus étudiés. Ces copolymères en peigne sont porteurs de fonctions acide carboxylique et de chaînes latérales de poly(ethylène glycol). Leurs fonctions anioniques leur permettent de s’adsorber sur les grains de ciment, tandis que les chaînes latérales génèrent de la répulsion stérique entre ces derniers. Cela conduit à la désagglomération des agglomérats, et donc la dispersion des particules

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14

HOSSAIN, KHOHINUR. "Derivatization of Metal Oxide with Bis-phosphonic Acids: A Straightforward Approach for Tailoring the Superficial Properties of the Nanoparticles for Drug Delivery Purposes." Doctoral thesis, Università degli Studi di Trieste, 2020. http://hdl.handle.net/11368/2963768.

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Lo sviluppo di nuovi nanosistemi ibridi organico-inorganici è un campo di ricerca all'avanguardia specifico per le applicazioni biomediche ad alto potenziale. In particolare, l'interazione tra i ligandi organici e le nanoparticelle inorganiche deve essere studiata e adattata in modo specifico al fine di ottenere stabilità e conferire proprietà specifiche ai nano-assiemi. Gli ZrNP sono sottoposti a approfonditi studi e funzionalizzazione per modificare le proprietà superficiali di questi materiali. La chimica superficiale della zirconia non è paragonabile a quella della silice, in particolare a

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15

GOLLA, VINAYA KUMAR [Verfasser], Ulrich [Akademischer Betreuer] Kleinekathöfer, Ulrich [Gutachter] Kleinekathöfer, Mathias [Gutachter] Winterhalter, Roland [Gutachter] Benz, and Lars [Gutachter] Schäfer. "Translocation of Phosphonic Acid Antibiotics Through Bacterial Outer Membrane Channels / VINAYA KUMAR GOLLA ; Gutachter: Ulrich Kleinekathöfer, Mathias Winterhalter, Roland Benz, Lars Schäfer ; Betreuer: Ulrich Kleinekathöfer." Bremen : IRC-Library, Information Resource Center der Jacobs University Bremen, 2021. http://d-nb.info/1225937787/34.

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16

Chen, Alfred Yuen-Wei. "Synthesis and Functionalization of Poly(ethylene oxide-b-ethyloxazoline) Diblock Copolymers with Phosphonate Ions." Thesis, Virginia Tech, 2013. http://hdl.handle.net/10919/23930.

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Poly(ethylene oxide) (PEO) and poly(2-ethyl-2-oxazoline) (PEOX) are biocompatible polymers that act as hydrophilic "stealth" drug carriers. As block copolymers, the PEOX group offers a wider variety of functionalization. The goal of this project was to synthesize a poly(ethylene oxide)-b-poly(2-ethyl-2-oxazoline) (PEO-b-PEOX) block copolymer and functionalize pendent groups of PEOX with phosphonic acid. This was achieved through cationic ring opening polymerization (CROP) of 2-ethyl-2-oxazoline monomer onto PEO. These polymerizations used tosylsulfonyl chloride as initiator. Size-exclusion chr

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17

Nilsing, Mattias. "Computational Investigation of Dye-Sensitized Solar Cells." Doctoral thesis, Uppsala universitet, Avdelningen för kvantkemi, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-7673.

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Interfaces between semiconductors and adsorbed molecules form a central area of research in surface science, occurring in many different contexts. One such application is the so-called Dye-Sensitized Solar Cell (DSSC) where the nanostructured dye-semiconductor interface is of special interest, as this is where the most important ultrafast electron transfer process takes place. In this thesis, structural and electronic aspects of these interfaces have been studied theoretically using quantum chemical computations applied to realistic dye-semiconductor systems. Periodic boundary conditions and l

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18

Zheng, Yilong, Fadi M. Jradi, Timothy C. Parker, Stephen Barlow, Seth R. Marder, and S. Scott Saavedra. "Influence of Molecular Aggregation on Electron Transfer at the Perylene Diimide/Indium-Tin Oxide Interface." AMER CHEMICAL SOC, 2016. http://hdl.handle.net/10150/622363.

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Chemisorption of an organic monolayer to tune the surface properties of a transparent conductive oxide (TCO) electrode can improve the performance of organic electronic devices that rely on efficient charge transfer between an organic active layer and a TCO contact. Here, a series of perylene diimides (PDIs) was synthesized and used to study relationships between monolayer structure/properties and electron transfer kinetics at PDI-modified indium-tin oxide (ITO) electrodes. In these PDI molecules, one of the imide substituents is a benzene ring bearing a phosphonic acid (PA) and the other is a

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19

Starke, Sandra. "Multifunktionale (Meth)acrylat-Copolymere mit Phosphonsäurederivaten." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-189936.

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Ziel der Doktorarbeit war es, Copolymere mit phosphonsäurehaltigen Seitenketten zu entwickeln, die nachfolgend über polymeranaloge Umsetzungen in Terpolymere mit polymerisationsfähgen Gruppen umgewandelt werden sollten. Die Terpolymere können dann somit im Bereich der Schicht,- Lackindustrie eingesetzt werden.

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20

Graillot, Alain. "Synthèse et caractérisation de copolymères thermosensibles phosphonés : évaluation de leurs propriétés de sorption et séparation au sein d’un nouveau procédé de traitement d’effluents aqueux chargés en métaux." Thesis, Montpellier 2, 2013. http://www.theses.fr/2013MON20226.

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Le travail de thèse présenté dans ce manuscrit a pour objectif la synthèse de copolymères thermosensibles complexants innovants pour la mise en place d'un nouveau procédé de traitement des effluents aqueux chargés en métaux. Ce procédé original est en effet basé sur l'utilisation de copolymères porteurs de groupements phosphonés permettant la sorption des métaux en solution aqueuse et possédant un caractère thermosensible de sorte à contrôler la solubilité du copolymère et à faciliter les étapes de sorption et de séparation. Dans un premier temps, la synthèse de copolymères thermosensibles pho

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21

Cortes-Clerget, Margery. "Synthèse de nouveaux catalyseurs bifonctionnels peptidiques incluant un motif acide phosphonique pour la création de liaisons C-C énantiosélective." Thesis, Sorbonne Paris Cité, 2015. http://www.theses.fr/2015USPCD058/document.

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Une bibliothèque de nouveaux catalyseurs bifonctionnels combinant à la fois l’aminocatalyse et l’activation acide par un acide phosphonique sur une même structure peptidique a été développée. Des variations structurales ont été apportées afin d’optimiser la géométrie du site catalytique. Le potentiel de ces catalyseurs a été testé sur la réaction d’addition de Michael stéréosélective d’aldéhydes sur divers nitroalcènes aromatiques. Dans des conditions optimisées, de très bonnes sélectivités (r.d. < 95:5 / r.e. < 93:7) ont été atteintes. Grâce à leur forte solubilité dans l’eau, ces catal

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22

Kim, Philseok. "Surface modification of nanoparticles for polymer/ceramic nanocomposites and their applications." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/31651.

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Thesis (Ph.D)--Chemistry and Biochemistry, Georgia Institute of Technology, 2009.<br>Committee Chair: Perry, Joseph W.; Committee Member: Kippelen, Bernard; Committee Member: Lyon, L. Andrew; Committee Member: Marder, Seth R.; Committee Member: Whetten, Robert L. Part of the SMARTech Electronic Thesis and Dissertation Collection.

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23

Hanrahan, Jane. "The synthesis of substituted phosphonic acids." Thesis, University of Warwick, 1995. http://wrap.warwick.ac.uk/55734/.

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Cyclic phosphonic acid analogues of the endogenous amino acids L-aspartic acid and L -glutamic acid have played a major role in the characterisation of excitatory amino acid receptors in the central nervous system. The aim of the first section of this work is to describe the development of a synthetic route that gives access to a novel series of compounds, 3-substituted-cyclobutanephosphonic acids. The synthesis of a valuable intermediate diethyl3-oxocyclobutanephosphonate is described. Elaboration of the ketone functionality of this compound provides allows the synthesis of a number of previo

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Orozco, Angela Maria. "Dilute acid hydrolysis of municipal solid waste using phosphoric acid." Thesis, Queen's University Belfast, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.501392.

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25

Bassil, Joëlle. "Développement par procédés plasma de polymères conducteurs protoniques de type phosphonique pour piles à combustible." Thesis, Montpellier 2, 2014. http://www.theses.fr/2014MON20029/document.

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Afin de rendre les piles à combustible de type PEMFC réellement compétitives, un certain nombre d'inconvénients liés à l'utilisation du Nafion® restent à contourner, en particulier sa mauvaise conductivité protonique à des températures supérieures à 80°C. Dans l'optique de pouvoir opérer à plus hautes températures (jusqu'à 120°C), le développement de membranes moins sensibles à l'eau s'avère donc déterminant. Les polymères à base de fonctions acide phosphonique sont considérés comme des candidats potentiels pour une intégration en tant que matériau électrolyte dans les PEMFC « hautes températu

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26

Laurent, Grégory. "Réactions de cycloadditions énantiosélectives catalysées par des dérivés d’acides de Brønsted chiraux." Thesis, Paris 11, 2014. http://www.theses.fr/2014PA112419.

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Ces travaux de thèse avaient pour objectif la synthèse asymétrique d’hétérocycles énantioenrichis par des méthodes à hautes valeurs ajoutées. Pour cela des catalyseurs ont été employés dans des réactions de cycloaddition. D’une part, l’organocatalyse asymétrique permet d’utiliser un matériel chiral peu coûteux en faible quantité pour générer des produits chiraux, d’autre part, les réactions de cycloadditions permettent une économie d’atome certaine et la création de plusieurs liaisons en une réaction.La première partie de cette thèse concerne des réactions de cycloadditions d’aza-Diels-Alder à

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27

Cao, Edgar. "Towards designing composite membranes for CO2 separation : the inclusion of hybrid TiO2-PEG structures and study of their interfaces." Thesis, Bordeaux, 2015. http://www.theses.fr/2015BORD0203/document.

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Ce travail de thèse vise à concevoir de nouvelles membranes performantes pour la séparation de gaz (CO2) dans le procédé de post-combustion. La stratégie proposée repose sur la préparation de membranes hybrides organiques/inorganiques, combinant des supports poreux de dioxyde de titane (TiO2) intégrés dans une couche dense de polymère à base de poly-oxyde d'éthylène. L'un des points important de cette étude est l'ancrage de la phase organique sur le support inorganique. Deux agents de couplage : le propyl phosphonique acide 2-bromo-2-méthyl propanoate et le 3--propylamino triéthoxy silan ont é

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28

Chen, Ran S. M. Massachusetts Institute of Technology. "Magnetic gels for uranium recovery from wet phosphoric acid." Thesis, Massachusetts Institute of Technology, 2017. http://hdl.handle.net/1721.1/111042.

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Thesis: S.M., Massachusetts Institute of Technology, Department of Chemical Engineering, 2017.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 75-85).<br>Incorporation of uranium recovery into wet phosphoric acid (WPA) processes can potentially supplement a significant portion of the world's uranium production and simultaneously benefit human health and environment by reducing radiological and toxic contamination of the phosphate fertilizer products. Liquid-liquid extraction as conventional uranium recovery methods applied in industrial suffers from vario

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Arlow, Antoinette. "Crystallisation aspects of the wet-process phosphoric acid industry." Pretoria : [s.n.], 2003. http://upetd.up.ac.za/thesis/available/etd-04152004-095501.

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Lizon, Tatiana Gallego. "Cadmium separation from phosphoric acid using the emulsion liquid membrane." Thesis, Imperial College London, 1998. http://hdl.handle.net/10044/1/7634.

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An emulsion liquid membrane (ELM) containing Cyanex 302 has been successfully used for the recovery of cadmium from synthetic phosphoric acid solutions containing 30% wt. P205. The ELM formulation was optimised for high extraction rate and stability. Cyanex 302, and a mixture of NaC1 (3M) and HC1 (1M), were selected from a set of possible reagents and stripping phases, following equilibrium and kinetic experiments in two-phase systems. Under chemical control the rate of Cd2 extraction was pseudo first order with respect to Cd2 and Cyanex 302 concentration. Arlacel C was found to be the most su

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Behbahani, Reza M. "Heat transfer and heat transfer fouling in phosphoric acid evaporators." Thesis, University of Surrey, 2003. http://epubs.surrey.ac.uk/842710/.

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The primary problem in concentrating phosphoric acid is due to fouling on the tube-side of the heat exchangers of the evaporators. Scaling on the heat transfer surfaces occurs because of high supersaturation of phosphoric acid liquor with respect to calcium sulfate. A review of the existing literature reveals that no information is available on heat transfer and on crystallisation fouling of phosphoric acid solutions. Solubility of calcium sulfate is very important with regards to the scaling problems in phosphoric acid concentration plants. Hence, the solubility of different calcium sulfate t

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Pilditch, Stephen Robert. "Modelling high temperature phosphoric acid doped polymer electrolyte fuel cells." Thesis, University of Newcastle Upon Tyne, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.519580.

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Kaplan, Matthew Jon. "Chiral Phosphoric Acid-Catalyzed Acetalization and Iso-Pictet-Spengler Reactions." Scholar Commons, 2013. http://scholarcommons.usf.edu/etd/4515.

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The development of novel asymmetric reaction methodologies has been invaluable in both the academic and industrial world. In just 15 years, organocatalysis has provided a new means of developing asymmetric reaction methodologies using catalysts that are environmentally benign, relatively inexpensive, bench stable, and non-toxic. One development in organocatalysis that is important to our group in particular is chiral phosphoric acid-catalysis. BINOL-derived and VAPOL-derived phosphoric acids have proven to be excellent catalysts for a number of reactions. The two projects I will discuss my ef

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34

Badini, Sérgio Ricardo Garcia [UNESP]. "Estudo da passagem de diferentes concentrações de ácido fosfórico através da dentina e observação da morfologia dentinária pelo microscópio eletrônico de varredura." Universidade Estadual Paulista (UNESP), 1997. http://hdl.handle.net/11449/113962.

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Made available in DSpace on 2015-01-26T13:21:25Z (GMT). No. of bitstreams: 0 Previous issue date: 1997-03-04Bitstream added on 2015-01-26T13:30:30Z : No. of bitstreams: 1 000036234.pdf: 4116221 bytes, checksum: 868e565d3f58d838039c7a0ba8c15bda (MD5)<br>A finalidade deste trabalho foi verificar a passagem do ácido fosfórico em diferentes concentrações em dentina profunda, situado a 0,3mm da câmara pulpar, e observar as• alterações morfológicas da dentina pelo MEV. Setenta e dois corpos de prova, molares e pré-molares humanos hígidos, foram utilizados para este trabalho onde foi exposta a dent

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James, Keith Edward. "The Effects of Phosphonic Acids in Dye-Sensitized Solar Cells." PDXScholar, 2016. http://pdxscholar.library.pdx.edu/open_access_etds/2951.

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Novel methods for the construction of dye-sensitized solar cells (DSSCs) were developed. A thin dense underlayer of TiO2 was applied on fluorine-doped tin oxide (FTO) glass using as a precursor Tyzor AA-105. Subsequently a mesoporous film of P-25 TiO2 was applied by spreading a suspension uniformly over the surface of the underlayer and allowing the plate to slowly dry while resting on a level surface. After sintering at 500° C slides were treated with TCPP as a sensitizing dye and assembled into DSSCs. A novel method was used to seal the cells; strips of Parafilm® were used as spacers between

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Psofogiannakis, George. "A mathematical model for a direct propane phosphoric acid fuel cell." Thesis, University of Ottawa (Canada), 2003. http://hdl.handle.net/10393/26424.

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In direct hydrocarbon fuel cells, a hydrocarbon fuel is oxidised in the anode electrode. This thesis presents a mathematical model to predict the performance of a unit cell that utilises propane as the fuel, oxygen as the oxidant, phosphoric acid as the electrolyte, and platinum as the catalyst, supported on porous carbon electrodes. The phenomena considered include the electrochemical reactions of propane oxidation and oxygen reduction on platinum, the diffusion of the gases in gas-filled electrode pores, the dissolution and diffusion of dissolved gases in liquid-filled electrode pores as wel

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Booker, Nicholas Anthony. "Removal of cadmium from wet process phosphoric acid by cation exchange." Thesis, Imperial College London, 1989. http://hdl.handle.net/10044/1/47365.

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Luschtinetz, Regina. "Theoretical studies towards a ferroelectric organic field-effect transistor based on functional thiophene molecules." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2013. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-102735.

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Thin-film organic field effect transistors (OFETs) have attracted growing interest in recent years due to their promising electrical, optical and mechanical properties. Especially, oligothiophenes and their derivates are candidates with good prospects for application as the organic semiconducting material in such devices. They possess an extended, polarisable aromatic π-electron system that promotes a high structural arrangement of the molecules. The charge transport in the organic film is realised in the direction perpendicular to the plane of the thiophene rings via a hopping transport mecha

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Pienaar, Danie. "Synthetic applications of bicyclic phosphoric triamides." Diss., Pretoria : [s.n.], 2000. http://upetd.up.ac.za/thesis/available/etd-11172006-092708/.

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Liang, Tao. "Chiral Phosphoric Acids and Alkaline Earth Metal Phosphates Chemistry." Thesis, University of South Florida, 2014. http://pqdtopen.proquest.com/#viewpdf?dispub=3632228.

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<p> Asymmetric synthesis and catalysis is one of the leading research areas in chemistry society, for its versatility and efficiency in obtaining chiral molecules that found the vast majority in natural active compounds and synthetic drugs. Developing asymmetric catalytic methodology is at the frontier in both industrial and academic research laboratories. Enantioselective organocatalysis has emerged as a powerful synthetic tool that is complementary to metal-catalyzed transformations. The development of chiral phosphoric acid and metal phosphate as catalysts has been a breakthrough in recent

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Tharp, Ronald S. "Fabrication of carbon-aerogel electrodes for use in phosphoric acid fuel cells." Thesis, Massachusetts Institute of Technology, 2005. http://hdl.handle.net/1721.1/32962.

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Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2005.<br>Includes bibliographical references (leaf 47).<br>An experiment was done to determine the ability to fabricate carbon aerogel electrodes for use in a phosphoric acid fuel cell (PAFC). It was found that the use of a 25% solution of the surfactant Cetyltrimethylammonium chloride (CTAC) in water resulted in the creation of micelle within the pores of the organic aerogel. The micelle allowed the aerogel to be air dried while maintaining the desired pore composition. Further testing also showed that the

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Ma, Yulin. "The Fundamental Studies of Polybenzimidazole/Phosphoric Acid Polymer Electrolyte for Fuel Cells." Case Western Reserve University School of Graduate Studies / OhioLINK, 2004. http://rave.ohiolink.edu/etdc/view?acc_num=case1089835902.

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Herocatty, Chen Po Cheng, and 陳博正. "Hybridized Resins Comprised Phosphonic Acid." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/87247852484560621015.

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碩士<br>淡江大學<br>化學學系<br>90<br>The thesis is based on corrosion protection by organic coatings. To synthesize the phosphorus-containing monomer (HEMAPOH) is the first step. The reactants are 2-hydroxyl ethyl mathacrylate (2-HEMA) and phosphorus pentoxide (P2O5), and the product is the phosphorus-containing monomer (HEMAPOH). Then, next step is to prepare the uv-curable epoxy resin. The epoxy prepolymer and acrylic acid are the starting materials for preparation of uv-curable epoxy resin. And next, there are three methods to prepare the coatings. The first is that the phosphorus-containing monomer

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Tamber, Harinder. "Synthesis and characterization of phosphonate ester and phosphonic acid containing polymers and blends." 1997. http://catalog.hathitrust.org/api/volumes/oclc/47769873.html.

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Thesis (Ph. D.)--State University of New York. College of Environmental Science and Forestry, Syracuse, 1997.<br>eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.

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Hsu, Wei-Ling, and 徐暐怜. "Synthesis and Characterization of Polymerized (3-Aminophenyl)phosphonic Acid." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/3qn63c.

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碩士<br>國立清華大學<br>工程與系統科學系<br>106<br>At present, the self-doped polyaniline bear sulfonic, boronic and carboxylic groups, but bearing phosphonic group is rare in the study. The phosphonic acid functional group as the protonic acid radical of the self-doped polyanilines, it does not only show enough acidity for doping but also is a dibasic acid. The first acid radical is used to internal-doping in the polyaniline backbone, and the second acid radical would provide features, such as forming salt while keeping the doping state. In 2014, the Japanese study teams reported the studies of the self-dope

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Chou, Shih-Chi, and 周詩綺. "Synthesis and properties of novel phosphonic acid containing-poly(alkylthiophene)/TiO2 hybrid materials." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/24663407670749617578.

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碩士<br>國立臺灣大學<br>高分子科學與工程學研究所<br>94<br>Polythiophenes have been widely used as photo-sensitizer and electron donor materials in polymer solar cells, because of their excellent optoelectronic properties and high charge-carrier mobility. However, the inherent incompatibility of organic polymers and inorganic particles frequently causes severe phase separation upon physical mixing, thus leading to poor photo-induced charge transfer efficiency. In this study, a series of novel polythiophene-TiO2 hybrid materials were synthesized by the sol-gel reaction of titanium alkoxide precursor in the presence

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Quan, Lan Tu. "Electrochemistry of cytochrome c on self-assembled phosphonic acid terminated alkanethiols on gold." 2004. http://www.lib.ncsu.edu/theses/available/etd-10292004-100531/unrestricted/etd.pdf.

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Lin, Ken, and 林肯. "Liquid crystal property and ion conductivity study of phosphonic acid functionalize imidazolium salts." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/82350728583841785117.

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Faßbender, Birgit [Verfasser]. "Solid-state NMR investigation of phosphonic acid based proton conducting materials / von Birgit Faßbender." 2009. http://d-nb.info/1000760863/34.

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Kao, Chia-Chun, and 高佳駿. "Synthesis and Characterization of Mesoporous Silicas With Benzen bridging, amine and phosphonic acid groups." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/57854953417185928798.

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碩士<br>國立中央大學<br>化學研究所<br>97<br>The thesis is divided into three parts. Studies on functionalization of mesoporous materials. In part one, the mesoporous silica SBA-1 (cubic Pm3n symmetry) functionalized with phenyl groups were synthesized via co-condensation of 1,4-bis(triethoxysilyl)benzene (BTEB) and tetraethoxysilane (TEOS) under acidic conditions using cetyltriethylammonium bromide (CTEABr) as a structure-directing agent. By optimizing the synthesis composition, the resulting materials exhibited much higher surface areas (up to 1210 m2/g) and larger pore volumes (up to 0.64 cm3/g) as compa

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