Results 151 to 160 of about 110,525 (205)

Benzene‐d6 and toluene‐d8 as guest molecules in micropores of a layered zirconium phosphonate: 2H, 13C{1H}, and 31P{1H} solid‐state NMR, deuterium NMR relaxation, and molecular motions

Magnetic resonance in chemistry : MRC, 2018
For the first time, pore spaces in the Zr (IV) phosphonate (1) as a representative of layered metal (IV) phosphonate materials have been investigated by studying mobility of guest molecules, benzene‐d6, and toluene‐d8.
A. R. Contreras, V. Bakhmutov, Douglas W. Elliott, A. Clearfield   +3 more
semanticscholar   +1 more source

Intercalation of proteins into α-Zirconium phosphonates: tuning the binding affinities with phosphonate functions

Microporous and Mesoporous Materials, 2005
Abstract Novel bioactive materials are prepared by the intercalation of proteins in the galleries of α-Zirconium phosphonates. α-Zirconium carboxymethylphosphonate (α-Zr(O3PCH2COOH)2 · xH2O), (α-ZrCMP), and α-Zirconium carboxyethylphosphonate (α-Zr(O3PCH2CH2COOH)2 · xH2O), (α-ZrCEP) indicated distinct affinities for four different proteins. A general
Anita Chaudhari, C.V. Kumar
openaire   +1 more source

Mesoporous Zirconium Phenylenesiliconate‐phosphonate Hybrids with Ordered Lamellar Nanostructures

Chemistry – A European Journal, 2015
AbstractNovel ordered lamellar mesostructure pZrPS‐2 was hydrothermally prepared by using zirconium propoxide and 4‐(EtO)2OPC6H4Si(OEt)3 (pPPS‐E), which was hydrolyzed to organic building units substituted with both siliconate and phosphonate groups, in the presence of CnTAB and TMAOH.
Kazuyuki, Maeda, Hiroki, Kobayashi, Kaku, Oguro, Masato, Otsu, Atsushi, Kondo, Tei, Maki   +5 more
openaire   +2 more sources

Preparation and characterization of films based on zirconium sulfophenyl phosphonate and chitosan

Carbohydrate Research, 2010
Zirconium sulfophenyl phosphonate (ZrSP), Zr(O(3)P-C(6)H(4)SO(3)H)(2), was synthesized and characterized to prepare nanocomposites based on chitosan (CS). The effects of ZrSP on the structure, morphology, and thermal properties, as well as the mechanical properties of the films were investigated by Fourier-transform infrared spectroscopy (FTIR ...
Yajuan, Yang, Changhua, Liu, Haixia, Wu, Rui, Li   +3 more
openaire   +2 more sources

Layered Zirconium Phosphate and Phosphonate as Heterogeneous Catalyst in the Preparation of Pyrroles.

ChemInform, 2003
Abstract Pyrroles may be prepared by condensation of alkyl and aryl amines and 1,4-diketones (Paal–Knorr reaction) under potassium exchanged layered Zirconium phosphate and zirconium sulfophenyl phosphonate catalyst in solvent free conditions.
CURINI, Massimo, ROSATI, Ornelio, Montanari F., Lioy E., Margarita R.   +4 more
openaire   +2 more sources

α-Zirconium phosphonates: versatile supports for N-heterocyclic carbenes

Chemical Communications, 2009
alpha-Zirconium phosphonates derivatised with N-heterocyclic carbenes provide a versatile platform for organocatalysis and metal-catalysed transformations, including the ring-opening polymerisation of cyclic esters, and olefin metathesis and hydroformylations by surface-bound ruthenium, rhodium and iridium complexes.
Chessa, Simona, Clayden, Nigel J., Bochmann, Manfred, Wright, Joseph A.   +3 more
openaire   +3 more sources

Excimer Formation in the Interlayer Region of Arene-Derivatized Zirconium Phosphonates

Journal of the American Chemical Society, 2003
Photophysical investigations are reported for two arene-derivatized zirconium phosphonates (layered solids). The chromophore groups that are attached within the interlayer region of these materials are seen to form excimer pairs. Whereas the naphthalene-containing system exhibits both monomer and excimer fluorescence, the potentially greater overlap of
Jay C, Amicangelo, Willem R, Leenstra
openaire   +2 more sources

Surface Coverage of Self-Assembed Zirconium Perylene Phosphonate Derivative Films on Quartz and Crystal Growth of Zirconium Perylene Phosphonate Derivative

Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals, 1999
Abstract The N,N′-bis(benzyl phosphonic acid)-3,4,9,10-perylene (dicarboximide) (BPPI) has been known as a photoconducting material in xerography and its layer-by-layer growth with Zr4+ ion as a self-assembled multilayer film has been studied. We describe a method for measuring the relative surface coverage of self-assembled zirconium-BPPI monolayer on
Hyun Jin Chae, Eung-Ryul Kim, Haiwon Lee
openaire   +1 more source

Starch‐based nanocomposites reinforced with layered zirconium phosphonate

Polymer Composites, 2010
AbstractA new type of layered zirconium glycine‐N,N‐dimethylphosphonate (ZGDMP), with enlarged interlayer d‐spacing and a polar carboxylate group (COO–), was prepared and characterized by Fourier transform infrared (FTIR) spectroscopy, X‐ray diffraction (XRD), and scanning electron microscopy (SEM). ZGDMP was intercalated by n‐butylamine which further
Haixia Wu, Changhua Liu, Yajuan Yang, Jianguang Chen, Peter R. Chang, Yun Chen   +5 more
openaire   +1 more source

α-Zirconium phosphonates as new supports for metallocene catalysts

Journal of Molecular Catalysis A: Chemical, 2004
Abstract Homoleptic and mixed α-zirconium phosphonates (ZrPs) α-Zr(O 3 PR) 2 (R = Me, Bu n , Bu i , Hex, Oct and Ph) and α-Zr(O 3 PR 1 ) 2− x (O 3 PR 2 ) x were readily prepared in high yields from zirconyl choride and the corresponding phosphonic acids in suitable solvent mixtures under hydrothermal conditions at low fluoride concentrations.
Beck, Stefan, Brough, Adrian R., Bochmann, Manfred   +2 more
openaire   +2 more sources