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SHR Neuro Cancer Cardio Lipid Metab Microb
Gatschelhofer, C; Schmid, MG; Schreiner, K; Pieber, TR; Sinner, FM; Gübitz, G.
Enantioseparation of glycyl-dipeptides by CEC using particle-loaded monoliths prepared by ring-opening metathesis polymerization (ROMP).
J Biochem Biophys Methods. 2006; 69(1-2):67-77
Doi: 10.1016/j.jbbm.2006.01.010
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- Leading authors Med Uni Graz
- Gatschelhofer Christina
- Sinner Frank Michael
- Co-authors Med Uni Graz
- Pieber Thomas
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- Abstract:
- Novel particle-loaded monolithic capillary electrochromatography (CEC) phases for chiral separations were prepared via ring-opening metathesis polymerization (ROMP) within the confines of fused silica columns with 200 microm i.d. using norborn-2-ene (NBE), 1,4,4a,5,8,8a-hexahydro-1,4,5,8,exo,endo-dimethanonaphthalene (DMN-H6) as monomers, 2-propanol and toluene as porogens, RuCl2(PCy3)2(CHPh) as initiator and silica-based particles containing the chiral selector. By suspending silica particles bearing the chiral selector in the polymerization mixture, particle-based monoliths are easily prepared. This approach has several advantages compared to particle-based separation media: (i) the concept of particle-based monoliths is broadly applicable, as any silica-based chiral phase can be used; (ii) they are inexpensive to prepare; and (iii) the manufacturing process is very simple, no sophisticated packing procedures or the preparation of end frits are required. To show the usefulness of this concept for chiral CEC, the chiral separation performance of particle-loaded CEC monoliths bearing teicoplanin aglycone, chemically bonded to 3 microm silica gel, was investigated for a set of glycyl-dipeptides. Particle-loaded ROMP CEC monoliths showed good separation performance for glycyl-dipeptides.
- Find related publications in this database (using NLM MeSH Indexing)
- Capillary Electrochromatography - methods
- Dipeptides - chemistry
- Dipeptides - isolation & purification
- Indicators and Reagents -
- Microscopy, Electron, Scanning -
- Particle Size -
- Polymers - chemistry
- Silicon Dioxide -
- Stereoisomerism -
- Find related publications in this database (Keywords)
- chiral separation
- particle-loaded monoliths
- capillary electrochromatography
- monolithic phases
- ROMP
- glycyl dipeptides