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Metal complex-substituted polysiloxanes as novel coatings for capillary electrophoresis and capillary electrochromatography
- Source :
- Journal of Chromatography A. 954:247-258
- Publication Year :
- 2002
- Publisher :
- Elsevier BV, 2002.
-
Abstract
- Two novel polysiloxane-based polymers, which contain metal complexes, have been prepared. To prepare the Co(TACN)3+(2) (TACN= 1,4,7-triazacyclononane) based polymers, an orthoamide derivative of TACN was added to bromobutane-substituted methylpolysiloxane and hydrolyzed with base. Co(II) was then coordinated to the TACN, followed by cobalt oxidation to make polymer A or followed by N-octyl TACN coordination and cobalt oxidation to make polymer B. In both materials, TACN forms thermodynamically and kinetically stable Co(TACN)3+(2) complexes in which the six coordination sites of the Co(III) are occupied by nitrogens from the TACN. The polymers were coated on fused-silica capillary columns and spherical silica particles, which were used for capillary electrophoresis and capillary electrochromatography, respectively. The open and packed columns showed strong and pH-independent reversed electroosmotic flow.
- Subjects :
- Magnetic Resonance Spectroscopy
Siloxanes
Inorganic chemistry
chemistry.chemical_element
Ligands
Biochemistry
Analytical Chemistry
Metal
Capillary electrophoresis
Electrochromatography
Chromatography, Micellar Electrokinetic Capillary
chemistry.chemical_classification
Capillary electrochromatography
Chromatography
Organic Chemistry
Electrophoresis, Capillary
General Medicine
Polymer
Kinetics
Electrophoresis
Hydrocarbon
chemistry
visual_art
visual_art.visual_art_medium
Thermodynamics
Cobalt
Subjects
Details
- ISSN :
- 00219673
- Volume :
- 954
- Database :
- OpenAIRE
- Journal :
- Journal of Chromatography A
- Accession number :
- edsair.doi.dedup.....756abd2ae946a726fad44e3fe1c115ff