Results 201 to 210 of about 4,190 (237)

Hydrogen bonding in mixed ligand copper organophosphonates

Chemical Physics Letters, 2003
The hydrogen bond linking phenylphosphonic acid dimers in a copper organophosphonate supramolecular complex is investigated using ab initio and density functional theory calculations. Both one- and two-proton structures were modelled and the calculated binding energy values indicated the one-proton model to be more favourable.
N.A. Benedek, M.J.S. Spencer, K. Latham, I. Yarovsky   +3 more
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Reaction of Acetylcholinesterase with Organophosphonates

1995
Irreversible inhibition of acetylcholinesterase (AchE) by organophosphorus agents is rapid, proceeding at rates that, in general, exceed 105–106 M−1-min−1. Numerous instances occur in which the reaction velocity, proceeding at rates greater than 108 M−1-min−1, approaches within an order of magnitude of the diffusion limitation (Berman and Leonard, 1989)
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Functional Organophosphonate Interfaces for Nanotechnology: A Review

ACS Applied Materials & Interfaces, 2017
Optimization of interfaces in inorganic-organic device systems depends strongly on understanding both the molecular processes that are involved in surface modification and the effects that such modifications have on the electronic states of the material.
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Optically Active Polyoxotungstates Bearing Chiral Organophosphonate Substituents

European Journal of Inorganic Chemistry, 2009
AbstractDivacant Keggin‐type polyoxotungstates [γ‐XW10O36]8– with X = Si or Ge, were functionalized with chiral phosphoryl groups. The hybrid compounds [(R*PO)2(γ‐XW10O36)]4– with R = N‐protected aminoalkyl groups or O‐protected amino acid derivatives, were isolated.
CARRARO, MAURO, MODUGNO, GLORIA, SARTOREL, ANDREA, SCORRANO, GIANFRANCO, BONCHIO, MARCELLA   +4 more
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Fireproofing of polyurethane elastomers by reactive organophosphonates

Polymer International, 2003
AbstractPolyurethane elastomers were prepared with hydroxytelechelic polybutadiene (HTPB) as polyol, modified 4,4′‐diphenylmethane diisocyanate (modified MDI) as liquid polyisocyanate, and phosphonate diols as chain extenders and flame retardant compounds.
El Khatib, Wassef, Youssef, Boulos, Bunel, Claude, Mortaigne, Bruno   +3 more
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SOLVENT EXTRACTION WITH ORGANOPHOSPHONIC MONO-ACIDIC ESTERS

Solvent Extraction and Ion Exchange, 1990
SUMMARY Mono-acidic liquid ion exchangers (extractants) containing the phosphonyl functional group arc reviewed.
Emmanuel O. Otu, Alan D. Westland
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Phosphonium ion fragmentation relevant to organophosphonate biodegradation

Journal of the American Chemical Society, 1989
Microbial degradation of organophosphonates 1 via carbon to phosphorus (C-P) bond cleavage has prompted a rapid expansion in chemical literature relevant to the biodegradation. However, the chemistry of organophosphonates under reducing conditions, particularly in regard to C-P bond cleavage, is still largely unknown.
L. Z. Avila, J. W. Frost
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Long-term behavioral changes in rats following organophosphonate exposure

Pharmacology Biochemistry and Behavior, 1987
The organophosphorus compound soman irreversibly inhibits cholinesterase in both the central and peripheral nervous systems. High doses of this compound produce seizures and death in animals. Surviving animals exhibit neural lesions and behavioral abnormalities.
K, Raffaele, D, Hughey, G, Wenk, D, Olton, H, Modrow, J, McDonough   +5 more
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Organophosphonate-Bridged Polyoxometalate-Based Dysprosium(III) Single-Molecule Magnet

Inorganic Chemistry, 2017
A novel dysprosium(III)-containing polytungstoarsenate, [{(AsW9O33)3Dy2(H2O)4W4O9(H2O)}2(NH2(CH2PO3)2)]33-, comprising two identical subunits bridged by an organophosphonate ligand shows single-molecule-magnet (SMM) behavior. Magnetic studies reveal that this complex exhibits a butterfly-shaped hysteresis loop up to 8 K, and a thermally activated ...
Yu Huo, Rong Wan, Pengtao Ma, Junliang Liu, Yancong Chen, Dandan Li, Jingyang Niu, Jingping Wang, Ming-Liang Tong   +8 more
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Superhydrophobicity via organophosphonic acid derivatised aluminium films

Surface Engineering, 2016
Organophosphonic acid derivatisation on aluminium surfaces had been demonstrated to be effective for surface energy control. By following the surface energy control strategy, surperhydrophobic Al surfaces had been achieved via microcolumn pattern and dodecylphosphonic acid (DDPA) derivatisation.
Y. Zhu, Y. M. Hu, H.-Y. Nie, W. Zhou, J. H. Yi   +4 more
openaire   +1 more source