Results 81 to 90 of about 280 (139)

Organically pillared microporous zirconium phosphonates

Journal of the Chemical Society, Dalton Transactions, 2002
There is great technological interest in the design of multifunctional microporous materials, particularly those with pores in the 10–20 A range. The many attempts to achieve this goal through cross-linking zirconium phosphate-like layers by use of several types of diphosphonic acids will be described. A variety of functionalized pillared materials are
Abraham Clearfield, Zhike Wang
openaire   +1 more source

Stable Supported Lipid Bilayers on Zirconium Phosphonate Surfaces

Langmuir, 2009
Supported lipid bilayers that can fully represent biological cell membranes are attractive biomimetic models for biophysical and biomedical applications. In this study, we develop a new approach to engineering stable supported lipid membranes and demonstrate their utility for the study of protein-membrane interactions.
Roxane M, Fabre, Daniel R, Talham
openaire   +2 more sources

Catalytic Activity of Myoglobin Immobilized on Zirconium Phosphonates

Langmuir, 2004
The adsorption and catalytic activity of myoglobin (Mb) on zirconium phosphonates (a-zirconium benzenephosphonate (alpha-ZrBP), a-zirconium carboxyethanephosphonate (alpha-ZrCEP), and a novel layered zirconium fluoride aminooctyl-N,N-bis(methylphosphonate) (ZrC8)) were investigated.
BELLEZZA, Francesca, CIPICIANI, Antonio, COSTANTINO, Umberto, Nicolis S.   +3 more
openaire   +3 more sources

Zirconium−Phosphonate Monolayers with Embedded Disulfide Bonds

Langmuir, 2003
Disulfides are chemically and electrochemically reactive functional groups that could be useful for ultra-high-resolution patterning of self-assembled monolayer films (SAMs) by atomic force microscopic (AFM) anodization. Zirconium−organophosphonate monolayers that contain embedded disulfide bonds were prepared by sequential deposition of Zr4+ and H2PO3-
Xuejun Wang, Marya Lieberman
openaire   +1 more source

Catalyst design of two-dimensional zirconium phosphonates

Journal of Molecular Catalysis, 1992
Abstract Zirconium phosphates or phosphonates, whose compounds have the general formula Zr(O3PR)2, can be obtained in crystalline forms with various layered structures. The preparation and characterization of two-dimensional zirconium phosphonate derivatives have been investigated.
Kohichi Segawa, Nobuhiro Kihara, Hiromichi Yamamoto   +2 more
openaire   +1 more source

Chapter 2. Zirconium Phosphonates

2011
This contribution presents a survey of the various aspects of the chemistry of Zr phosphonates, throughout 30 years of activity of the Laboratory of Inorganic Chemistry of Perugia on this topic. These inorganic–organic compounds are characterized by a very low solubility and chemical robustness, and their structure and reactivity can be easily ...
Riccardo Vivani, Ferdinando Costantino, Marco Taddei   +2 more
openaire   +1 more source

Zirconium(IV) Phosphonate–Phosphates as Efficient Ion-Exchange Materials

Inorganic Chemistry, 2016
Layered metal phosphonate-phosphate hybrid materials are known to be ion-exchange materials. Hybrids with zirconium metal centers were synthesized at varying phosphonate-phosphate ratios in order to explore the function and charge preference. The zirconium hybrid materials were found to have a range of applicable uses with preference for highly charged
Rita, Silbernagel, Caroline H, Martin, Abraham, Clearfield   +2 more
openaire   +2 more sources

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

Intercalates of zirconium phosphates and phosphonates

1991
Abstract Tetravalent metals such as Zr, Ti, Sn, Ce, Th, etc. can be bound to oxygens belonging to XO4 and/or RXO3 groups (X = pentavalent element; R =inorganic or organic group such as -H, -OH, -CH3, -C6H5, etc.) and from such a combination many fibrous, layered, and three-dimensional structures can be obtained.
Giulio Alberti, Umberto Costantino
openaire   +1 more source

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