Relevant bibliographies by topics / Bis-Phosphonic Acid

Academic literature on the topic 'Bis-Phosphonic Acid'

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Published: 1 April 2023

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Journal articles on the topic "Bis-Phosphonic Acid"

1

Köken, Nesrin. "Polymers containing amino bis(methylene phosphonic acid) groups for scale inhibition." Pigment & Resin Technology 48, no. 1 (January 7, 2019): 73–83. http://dx.doi.org/10.1108/prt-01-2017-0007.

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Purpose The purpose of this paper is to prepare poly[allyl amino bis(methylene phosphonic acid)-ran-acrylic acid]s by two different routes. In the first route, poly(allyl amine-ran-acrylic acid)s were produced by radical copolymerization of a mixture of ally amine and acrylic acid, then converted into poly[allyl amino bis(methylene phosphonic acid)-ran-acrylic acid]s by the Mannich reaction with a mixture of formaldehyde and phosphonic acid. In the second route, allyl amino bis(methylene phosphonic acid) monomer was synthesized and copolymerised with acrylic acid. The aim of this work is to produce low-molecular-weight copolymer with the low amount of nitrogen and phosphorous having better scale inhibiting performance than commercial low-molecular-weight poly(acrylic acid)s. Design/methodology/approach Poly(allyl amine-ran-acrylic acid)s were prepared by radical copolymerisation of a mixture of ally amine and acrylic acid, and the molecular weight of copolymers was regulated by using an effective chain transfer compound and the formed copolymer was reacted with a mixture of formaldehyde and phosphorous acid. Allyl amino bis(methylene phosphonic acid) monomer was prepared and then copolymerised with acrylic acid using radical initiators. Findings Poly[allyl amino bis(methylene phosphonic acid)-ran-acrylic acid] produced with both routes, especially low-molecular weight ones have better anti-scaling performance than low-molecular-weight commercial poly(acrylic acid). Research limitations/implications By using an excess of formaldehyde and phosphonic acid, a limited increase in the conversion of amine groups of poly(allyl amine-ran-acrylic acid) to amino methylene phosphonic acid groups was achieved, so unreacted amine groups were always present in the structure of the final copolymers. Practical implications The low-molecular-weight poly[allyl amino bis(methylene phosphonic acid)-ran-acrylic acid] may be used as a better anti-scaling polymer in industry. Social implications The low-molecular-weight poly[allyl amino bis(methylene phosphonic acid)-ran-acrylic acid] is an alternative polymer for scale inhibition in the water boilers. Originality/value The low-molecular-weight poly[allyl amino bis(methylene phosphonic acid)-ran-acrylic acid] copolymers containing both carboxylic acid and amino bis(methylene phosphonic acid) are more effective anti-scaling additives than poly(acrylic acid)s in water boilers.
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Rao, B. Venkateswara, and D. M. Puri. "Copper(II) Complexes of Organophoshonic Acids-A Comparative Study." E-Journal of Chemistry 8, s1 (2011): S271—S281. http://dx.doi.org/10.1155/2011/813586.

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Polynuclear copper(II) derivatives of 1-hydroxyethylidenediphosphonic acid (HEDP), 1-aminoethylidenediphosphonic acid (AEDP, H4L),α-aminobenzylidene diphosphonic acid (ABDP, H4L), 1-amino-2-carboxyethane- 1,1-diphosphonic acid (ACEDP, H5L), 1,3 diaminopropane-1,1,3,3-tetra-phosphonic acid (DAPTP, H8L), Ethylenediamine-N,N'-bis (dimethyl-methylenephosphonic) acid (EDBDMPO, H4L),o-phenylene-diamine-N,N'-bis (dimethylmethylenephosphonic) acid (PDBDMPO, H4L), diethylene triamine –N,N,N',N',N"N-penta (methylene phosphonic) acid (DETAPMPO, H10L) and diethylene triamine –N,N"-bis (dimethyl methylene phosphonic) acid (DETBDMPO, H4L) have been prepared in aqueous medium. The general formula of derivatives from elemental analysis was found to be Cu2L.XH2O (in case of AEDP, ABDP, EDBDMPO, PDBDMPO, DETBDMPO), Cu5L2.XH2O (in case of ACEDP) Cu4L.XH2O, Cu2H4L. XH2O (in case of DAPTP) and Cu5L.XH2O (in case of DETAPMPO). The electronic spectra have shown them to be six coordinated with slight distortion from octahedral geometry. Antiferromagnetism was inferred from magnetic moment data. Infrared spectral studies were carried out to determine coordination sites. EPR (Electron Paramagnetic Resonance) spectra that supports the presence of tetragonal distortion and antiferromagnetic behaviour, have also been studied.
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Baumgartner, Yann, Y. Maximilian Klein, Edwin C. Constable, Catherine E. Housecroft, and Markus Willgert. "Cyanoacrylic- and (1-cyanovinyl)phosphonic acid anchoring ligands for application in copper-based dye-sensitized solar cells." RSC Advances 6, no. 89 (2016): 86220–31. http://dx.doi.org/10.1039/c6ra20375b.

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Replacing phosphonic acid by (1-cyanovinyl)phosphonic acid anchors in heteroleptic bis(diimine)copper(i) dyes in DSCs gives a gain in JSC; a dye with a bpy-based anchor gives improved performance over one with a phen-based anchor.
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Chung, Yeong-Jin, and Eui Jin. "Synthesis of Alkylenediaminoalkyl-bis-Phosphonic Acid Derivatives." Journal of the Korean Oil Chemists Society 30, no. 1 (March 30, 2013): 1–8. http://dx.doi.org/10.12925/jkocs.2013.30.1.001.

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Popov, Konstantin, Hannu Rönkkömäki, and Lauri H. J. Lajunen. "Critical evaluation of stability constants of phosphonic acids (IUPAC Technical Report)." Pure and Applied Chemistry 73, no. 10 (October 1, 2001): 1641–77. http://dx.doi.org/10.1351/pac200173101641.

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Available experimental data on stability constants of proton and metal complexes for 10 phosphonic acids [methylphosphonic acid, 1-hydroxyethane-1,1-diylbisphosphonic acid, dichloromethylenebisphosphonic acid, amino-methanephosphonic acid, N-(phosphonomethyl)glycine, imino-N,N-bis(methylenephosphonic acid), N-methylamino-N,N-bis(methylenephosphonic acid), nitrilotris(methylenephosphonic acid), 1,2-diaminoethane-N,N,N´,N´-tetrakis-(methylenephosphonic acid), and diethylenetriamine-N,N,N´,N´´,N´´-pentakis-(methylenephosphonic acid)], published in 1950­1997, have been critically evaluated. For the latter phosphonate, all the data are rejected, as well as protonation constants [HL]/[H][L] for three other ligands. Higher-quality data are selected and presented as "Recommended" and "Provisional".
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Guenin, Erwann, Estelle Degache, Jean Liquier, and Marc Lecouvey. "Synthesis of 1-Hydroxymethylene-1,1-bis(phosphonic acids) from Acid Anhydrides: Preparation of a New Cyclic 1-Acyloxymethylene-1,1-bis(phosphonic acid)." European Journal of Organic Chemistry 2004, no. 14 (July 2004): 2983–87. http://dx.doi.org/10.1002/ejoc.200400053.

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Page, Philip C. B., Michael J. McKenzie, and James A. Gallagher. "Novel Synthesis of Bis(phosphonic acid)−Steroid Conjugates." Journal of Organic Chemistry 66, no. 11 (June 2001): 3704–8. http://dx.doi.org/10.1021/jo001489h.

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González, Lidia, Anne Ladegaard Skov, and Søren Hvilsted. "PEG-Bis Phosphonic Acid Based Ionic Supramolecular Structures." Macromolecular Symposia 342, no. 1 (August 2014): 8–20. http://dx.doi.org/10.1002/masy.201300227.

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Kanamura, K., A. Tanaka, D. Gervasio, V. Kennedy, R. Adzic, E. B. Yeager, D. Burton, and R. Guneratne. "Perfluoro‐ethylene‐1,2‐bis‐phosphonic Acid Fuel Cell Electrolyte." Journal of The Electrochemical Society 143, no. 9 (September 1, 1996): 2765–70. http://dx.doi.org/10.1149/1.1837104.

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Kalchenko, Vitaly, Olga Kalchenko, and Sergiy Cherenok. "Complexation of Calix[4]arene bis-Hydroxymethylenediphosphonic Acid with Amino acids. Binding Constants Determination by RP HPLC Method." French-Ukrainian Journal of Chemistry 3, no. 2 (2015): 93–100. http://dx.doi.org/10.17721/fujcv3i2p93-100.

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Host-Guest complexation of calixarene-bis-hydroxymethylenediphosphonic acid with 17 amino acids in water solution had been studied by the RP HPLC and molecular modelling methods. It had been shown the binding constants of the complexes are depended on the nature of the amino acid residue, log P and pKa of the acids. The complexation is mainly determined by the electrostatic interactions between the positively charged nitrogen atom of the amino acid and the negatively charged oxygen atom of phosphonic acid residue of the calixarene, the Host-Guest p-p, СН-p and solvophobic interactions.
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Dissertations / Theses on the topic "Bis-Phosphonic Acid"

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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 extractant complexes was approximately 73%. Two methods, used to describe the equilibrium extraction of two or more metal ions were compared namely, the Delta Y method and the Pseudo-Gamma approach. Each of these methods account for the non-ideal interactions between mixture components. Barclay's Pseudo-Gamma relationship was found to be simpler, and correlated the data very well. (Abstract shortened by UMI.)
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2

McGraw, Thomas L. (Thomas Lee). "The Effect of N, N Bis (ethylene)-P (1-adamantyl) Phosphonic Diamide on Rous Sarcoma Virus." Thesis, North Texas State University, 1988. https://digital.library.unt.edu/ark:/67531/metadc501033/.

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The drug, N,N bis (ethylene)-P (1-adamantyl) phosphonic diamide inhibits focus formation of Rous Sarcoma Virus in tissue culture. Transformation of chick cells was inhibited when the drug was added to chick cells prior to infection. The drug did not inhibit the transformation of Normal Rat Kidney Cells infected with RSV, when the cells were grown at non-permissive temperatures and shifted to permissive temperatures upon addition of the drug. Nor did the drug revert cells transformed at permissive temperatures. These studies indicated that the inhibition of RSV is in the early stage of viral growth, possible penetration or uncoating.
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Yeh, Zhen, and 葉臻. "Self-assembly, Structures, and Properties of1,4-Bis(methylene phosphonic acid)-2,3,5,6- tetramethylbenzene Containing Coordination Polymers." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/43z2cc.

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碩士
國立臺北科技大學
化學工程研究所
101
In this thesis, a bis-phosphonate acid ligand 1,4-bis(methylene phosphonic acid) 2,3,5,6-tetramethylbenzene (H4bmpb) was reacted with transition-metal ions (MnII, CoII), and alkaline earth ions (BaII), at different temperatures and at different pH values, resulting in the formation of five coordination polymers 1-5. When the H4bmpb ligand was reacted with transition-metal ions (MnII, CoII), three coordination polymers were produced. Compounds 1 and 2 were prepared under different reaction conditions at different pH values. Compounds 1 and 2 were characterized by single-crystal X-ray diffraction analyses. The compounds are isostructures and adopt a 1D chain topology. Compound 3 was obtained as a co-crystal. The thermal stability and physical properties of the complexes were also examined. Compounds 4 and 5 were produced by the reaction of H4bmpb with a transition-metal ion (CoII) in the presence of 4,4''-bipyridine or 2,2''-bipyridine. Compound 4 is a 2D coordination polymer. The 2D layers are further stacked into a 3D MOF. However, when the temperature was increased to 60 °C, compound 5 was produced. This compound is a 1D chain and the chains are further linked into a 2D sheet. The structures, thermal stabilities and physical properties of products 1-5 are discussed in this thesis.
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Book chapters on the topic "Bis-Phosphonic Acid"

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Sposato, Corradino, Alessandro Blasi, Giuseppe Devincenzis, Pietro Garzone, and Massimo Morgana. "Comparison Among Different Extractants, AS (2-Ethylhexyl)-Mono (2-Ethylhexyl) Ester Phosphonic Acid (P507), Secondary-octyl Phenoxy Acetic Acid (CA-12) and Bis (2, 4, 4-Trimethylpentyl) Phosphinic Acid (CYANEX272), in the Separation of Heavy Rare Earths v." In Rare Metal Technology 2014, 201–3. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2014. http://dx.doi.org/10.1002/9781118888551.ch36.

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"Effect of Insuffi cient Watering and Melamine Salt of Bis(Oxymethyl)phosphonic Acid (Melaphen) on the Fatty Acid Composition." In Progress in Polymer Materials Science, 206–17. Apple Academic Press, 2013. http://dx.doi.org/10.1201/b14543-24.

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Haga, Masa-aki. "Surface-Confined Ruthenium Complexes Bearing Benzimidazole Derivatives: Toward Functional Devices." In Ruthenium - an Element Loved by Researchers [Working Title]. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.97071.

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Substitutionally inert ruthenium complexes bearing benzimidazole derivatives have unique electrochemical and photochemical properties. In particular, proton coupled electron transfer (PCET) in ruthenium–benzimidazole complexes leads to rich redox chemistry, which allows e.g. the tuning of redox potentials or switching by deprotonation. Using the background knowledge from acquired from their solution-state chemistry, Ru complexes immobilized on electrode surfaces have been developed and these offer new research directions toward functional molecular devices. The integration of surface-immobilized redox-active Ru complexes with multilayer assemblies via the layer-by-layer (LbL) metal coordination method on ITO electrodes provides new types of functionality. To control the molecular orientation of the complexes on the ITO surface, free-standing tetrapodal phosphonic acid anchor groups were incorporated into tridentate 2,6-bis(benzimidazole-2-yl)pyridine or benzene ligands. The use of the LbL layer growth method also enables “coordination programming” to fabricate multilayered films, as a variety of Ru complexes with different redox potentials and pKa values are available for incorporation into homo- and heterolayer films. Based on this strategy, many functional devices, such as scalable redox capacitors for energy storage, photo-responsive memory devices, proton rocking-chair-type redox capacitors, and protonic memristor devices have been successfully fabricated. Further applications of anchored Ru complexes in photoredox catalysis and dye-sensitized solar cells may be possible. Therefore, surface-confined Ru complexes exhibit great potential to contribute to the development of advanced functional molecular devices.
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