|Metal ion complexing properies [i.e. properties] of amide donating ligands
||The present state of knowledge of the coordinating properties of polyamine
ligands with pendant amide groups is reviewed. The coordinating properties of ligands of
this type are largely unknown at the present time. The high basicity of amide oxygen...
|Synthesis and design of fluorescence ligands to act as sensor for zinc
||Design and synthesis of ligands to detect low concentrations of Zn2+ in various systems are
being explored worldwide. The purpose of this research is to synthesize and study fluorescent
sensors for Zn2+ in nervous system by utilizing CHEF (Chelatio...
|Complexation of metal ions in aqueous solution by fluorescent ligands containing pyridyl groups
||This research focused primarily on the induction of fluorescence by secondary
ligands in solution. The Zn2+ ion, when complexed to fluorophoric ligands, is known to
enhance the intensity of emission. With this in mind, both a fluorescence-quenching...
|The removal of Cremophor® EL from paclitaxel for quantitative analysis by HPLC-UV
||The most common technique for analysis of drug substances is high performance
liquid chromatography (HPLC) using a variable wavelength detector (UV). Cremophor®
EL (ethoxylated castor oil, CrEL) is a non-ionic emulsifier that is used to assist in t...
|The study of 8-Hydroxyquinoline-2-Carboxyllic acid and its metal ion complexing properties
||The metal ion coordinating properties of the ligand HQC (8-hydroxyquinoline-2-
carboxylic acid) were studied by UV-visible spectroscopy and X-ray crystallography. The
protonation constants of HQC were determined by monitoring absorbance of 5 x 10-5...
|Metal ion complexing properties of the two-dimensional, highly preorganized ligand 1, 10-Phenanthroline-2, 9-Dicarboxylic acid
||Preorganized ligands have proven to be important to inorganic chemistry, yielding higher
stability constants and sharper metal ion selectivity than their more flexible analogs. These
ligands may have important applications in the biomedical, enviro...
|The highly preorganized ligand 2,9-BIS(Hydroxymethyl)-1,10-Phenanthroline, and its complexation properties with metal ions
||Preorganization has been shown to be an important concept in inorganic chemistry. Preorganization increases the thermodynamic stability of complexes and metal ion selectivity of ligands. A ligand is more highly preorganized the more nearly it is cons...
|The highly preorganized ligands 1,10-Phenanthroline-2,9-Dialdoxime and BIS-1, 10-Phenanthroline, and their complexing properties with metal ions
||Preorganization is important in the recognition of metal ions by ligands. A ligand is more
preorganized the more it is constrained as the free ligand to be in the conformation required to
complex the target metal ion. Until the present time, high l...
|The highly preorganized ligand 2, 9-DI-(2'-PYRIDYL)-1, 10-Phenanthroline, and its complexation properties with metal ions
||The compound 2,9-di-(2’-pyridyl)-1,10-phenanthroline (DPP) has many potential
uses in the fields of medicinal and environmental chemistry. The great stability
possessed by complexes of DPP and heavier metal ions such as cadmium, lead, and
|Metal ion complexing and fluorescence properties of the novel hemicycle, dipyridoacridine, with computational studies on metal ion selectivity
||The novel hemicycle dipyridoacridine (DPA) was studied using UV/Vis
spectrophotometric and 3D-fluorometric methods. The UV/Vis spectrophotometric methods
resulted in a pKa2 for DPA of 4.52 + 0.06, and a pKa1 of 2.22 + 0.03. Formation constants were...
|Development of a sensitive [delta]¹5 N analysis for photopigments
||A method for the oxidation and nitrogen isotopic analysis of photopigments (chlorophyll
and phaeophytin) has been developed. Homogenous single source materials (spinach and diatom
culture) as well as mixed matrix (estuarine water) natural samples w...
|Metal ion complexing properties of the highly preorganized ligand 1, 10-phenanthroline-2,9-dicarboxylic acid
||Highly preorganized ligands have shown greater stability constants as well as increased
metal-ion selectivities over their straight-chain analogs. These ligands show a promising future
in the bioinorganic, nuclear and industrial fields as well as m...
|The highly preorganized ligands 8-(2-Pyridyl) Quinoline, 2,2'-dipyridyl amine and 1,10-phenanthroline-2, 9-dicarboxylic acid, and their complexing properties with metal ions
||Highly preorganized ligands are those that are constrained as the free ligands to
be in the conformation required to complex the target metal ion. Such ligands have been
shown to form more stable complexes, and display higher metal ion selectivity ...