Results 181 to 190 of about 11,207 (210)

Niedrigschmelzende, flüssigkristalline Metalloporphyrine

Angewandte Chemie, 1997
Gezielt einstellen läßt sich die Art der Mesophase durch die Wahl der Seitenketten von Porphyrinen mit vielen langen Seitenketten. Es entstehen calamitische oder columnare Phasen, deren Übergangstemperaturen niedriger sind als die der seitenkettenfreien Stammverbindungen.
Qing Min Wang, Duncan W. Bruce
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Metalloporphyrin Molecular Sieves

Chemistry – A European Journal, 2000
Crystal-engineering strategies have been systematically developed for the rational design by self-assembly of diverse metalloporphyrin molecular-sieve materials. Cooperative coordination and hydrogen bonding algorithms of molecular recognition proved particularly useful for this aim.
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Electrocatalysis on Metalloporphyrins

Russian Chemical Reviews, 1980
Results of theoretical and applied research on electrocatalytic reactions — the cathodic reduction of oxygen, hydrogen peroxide, and carbon dioxide and the anodic oxidation of organic and inorganic substances — on metalloporphyrins are analysed with a list of 132 references.
M R Tarasevich, K A Radyushkina
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Metalloporphyrin catalysts for organic synthesis

Journal of Porphyrins and Phthalocyanines, 2004
Novel chiral systems for the catalytic asymmetric oxidation and cyclopropanation of olefins based on metalloporphyrins containing iron, ruthenium and manganese, have been recently introduced. High catalyst turnover numbers and sometimes high enantiomeric excess were observed.
Simonneaux, G, TAGLIATESTA, PIETRO
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Out-of-plane metalloporphyrin complexes

Journal of Chemical Education, 1975
Abstract : Recent progress in the chemistry of synthetic metalloporphyrins has shown that the porphyrin moiety can act as a bi-, tri- or hexadentate ligand, as well as the usual tetradentate ligand. In addition, the metal ion has been observed to possess 4, 5, 6 or 8-coordination.
G A, Taylor, M, Tsutsui
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Metalloporphyrin Dendrimers with Folding Arms

Angewandte Chemie International Edition, 1998
Rigid and flexible linkers are combined in the new dendrimer shown schematically in the picture, which contains nine metalloporphyrin units (Porph). The construction is such that the four "arms" of the dendrimer can fold in a cooperative and predetermined manner in response to added 1,4-diazabicyclo[2.2.2]octane (DABCO).
Chi Ching, Mak, Nick, Bampos, Jeremy K M, Sanders   +2 more
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Vibronic Transitions in Single Metalloporphyrins

ChemPhysChem, 2005
AbstractStructural and electronic properties of single zinc etioporphyrin molecules adsorbed on Al2O3/NiAl(110) were probed by a low‐temperature scanning tunneling microscope (STM). Scanning tunneling spectroscopy (STS) revealed progressions of spectral features corresponding to the vibronic states of individual molecules that depend strongly on the ...
H J, Lee, J H, Lee, W, Ho
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Emerging Applications of Phosphorescent Metalloporphyrins

Journal of Fluorescence, 2005
The subject of phosphorescent metalloporphyrins is reviewed, focusing mainly on the development and application of Pt- and Pd-porphyrins. A summary of their general chemical and photophysical properties, and guidelines for rational design of the phosphorescent labels, bioconjugates and probes is given.
Dmitri B, Papkovsky, Tomás C, O'Riordan
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Metalloporphyrins

Journal of Chemical Education, 1984
M. S. Maitland, R. H. Langley
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Metalloporphyrins

2021
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