Synthesis and Structure of New Macrocyclic Bisindolylmaleimides

2003 ◽  
Vol 68 (5) ◽  
pp. 899-906 ◽  
Author(s):  
Christian Mandl ◽  
Manfred Zabel ◽  
Burkhard König
Keyword(s):  
Crown Ether ◽  
Metal Cations ◽  
Uv Spectra ◽  
Ring Conformation ◽  
Absorption Properties ◽  
Torsion Angles ◽  
Ether Derivative ◽  
Induced Changes

We report synthesis and structure of three new macrocyclic bisindolylmaleimides. The UV spectra of the xylene-bridged compounds4and6show significant differences. A dependence of the absorption properties on the maleimide-indole torsion angles is likely. A first attempt to use induced changes in ring conformation of the more flexible macrocyclic crown ether derivative8to signal the presence of metal cations failed.

Mixed monolayers of a photosensitive crown-ether derivative and a polymer as the prototype of sensing nanomaterials

2016 ◽  
Vol 26 (1) ◽  
pp. 40-42 ◽  
Author(s):  
Sergei Yu. Zaitsev ◽  
Daria O. Solovyeva ◽  
Ilia S. Zaitsev ◽  
Marina S. Tsarkova
Keyword(s):  
Crown Ether ◽  
Mixed Monolayers ◽  
Ether Derivative

Emergence of Symmetry and Chirality in Crown Ether Complexes with Alkali Metal Cations

2010 ◽  
Vol 114 (26) ◽  
pp. 7048-7054 ◽  
Author(s):  
Bruno Martínez-Haya ◽  
Paola Hurtado ◽  
Ana R. Hortal ◽  
Said Hamad ◽  
Jeffrey D. Steill ◽  
...  
Keyword(s):  
Crown Ether ◽  
Alkali Metal ◽  
Metal Cations ◽  
Alkali Metal Cations ◽  
Crown Ether Complexes

scholarly journals Novel phthalonitrile derivatives as potential compounds for extraction and complexation of metal cations

2016 ◽  
Vol 11 (10) ◽  
pp. 3870-3874
Author(s):  
Lassaad Baklouti
Keyword(s):  
Heavy Metal ◽  
Transition Metal ◽  
Metal Cations ◽  
Uv Spectra ◽  
Transition Metal Cations ◽  
Binding Properties ◽  
Heavy Metal Cations ◽  
Uv Visible ◽  
The Stability ◽  
Ligand Species

The synthesis and the binding properties of novel phthalonitrile derivatives 1-3 towards metal cations have been described in this paper. The complexation and extraction of some transition and heavy metal cations have been followed by UV-visible spectrophotometry absorption in methanol. The conductivity studies have been used in order to confirm complex’s stoichiometries. The treatment of UV spectra by digital program showed the formation of ML (with ML2 in some cases) (M=metal, L=ligand) species. Beyond the discussion of the stability profiles of complexes particular attention is paid to the selectivity towards Cu2+ in the 1st sequence of transition metal cations and towards Hg2+ in the sequence of heavy metal cations.

Interfacial Hydrogen Bonding. Self-Assembly of a Monolayer of a Fullerene−Crown Ether Derivative on Gold Surfaces Derivatized with an Ammonium-Terminated Alkanethiolate

1996 ◽  
Vol 118 (25) ◽  
pp. 6086-6087 ◽  
Author(s):  
Francisco Arias ◽  
Luis A. Godínez ◽  
Stephen R. Wilson ◽  
Angel E. Kaifer ◽  
Luis Echegoyen
Keyword(s):  
Hydrogen Bonding ◽  
Crown Ether ◽  
Self Assembly ◽  
Gold Surfaces ◽  
Ether Derivative

Neutral Carrier-Type Ion Sensors Based on Sol−Gel-Derived Membranes Incorporating a Bis(crown ether) Derivative by Covalent Bonding

1998 ◽  
Vol 70 (20) ◽  
pp. 4309-4313 ◽  
Author(s):  
Keiichi Kimura ◽  
Takenobu Sunagawa ◽  
Setsuko Yajima ◽  
Saori Miyake ◽  
Masaaki Yokoyama
Keyword(s):  
Crown Ether ◽  
Sol Gel ◽  
Covalent Bonding ◽  
Ion Sensors ◽  
Neutral Carrier ◽  
Ether Derivative

Selective column concentration of alkali-metal cations with a crown ether carboxylic acid resin

1991 ◽  
Vol 63 (17) ◽  
pp. 1844-1847 ◽  
Author(s):  
Takashi. Hayashita ◽  
Joung Hae. Lee ◽  
Shiping. Chen ◽  
Richard A. Bartsch
Keyword(s):  
Carboxylic Acid ◽  
Crown Ether ◽  
Alkali Metal ◽  
Metal Cations ◽  
Alkali Metal Cations ◽  
Acid Resin
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