Browsing by Subject "capillary electrochromatography"

Article

Analytical separations in open-tubular capillary electrochromatography

Kapnissi‐Christodoulou, Constantina P.; Zhu, X.; Warner, I. M. (2003)

This review represents a summary of recent progress in open-tubular capillary electro-chromatography (OT-CEC) for chiral and achiral separations. The OT-CEC approach is an alternative to packed-CEC that could eliminate the ...

Article

Analytical separations using molecular micelles in open-tubular capillary electrochromatography

Kapnissi‐Christodoulou, Constantina P.; Akbay, C.; Schlenoff, J. B.; Warner, I. M. (2002)

Open-tubular capillary electrochromatography (OT-CEC) is an alternative approach to conventional CEC. The primary advantage of OT-CEC is the elimination of problems associated with frits and silica particles in conventional ...

Article

Chiral separations using a polypeptide and polymeric dipeptide surfactant polyelectrolyte multilayer coating in open-tubular capillary electrochromatography

Kamande, M. W.; Zhu, X.; Kapnissi‐Christodoulou, Constantina P.; Warner, I. M. (2004)

A polyelectrolyte multilayer (PEM) coating consisting of the polypeptide, poly(L-lysine) hydrobromide, poly(L-lysine) and the polymeric dipeptide surfactant, poly(sodium undecanoyl-L-leutcyl-alaninate), poly(L-SULA), is ...

Article

Enantioseparations in open-tubular capillary electrochromatography: Recent advances and applications

Kapnissi‐Christodoulou, Constantina P.; Nicolaou, Athina G.; Stavrou, Ioannis J. (2016)

This review highlights recent advances and applications in open-tubular capillary electrochromatography (OT-CEC) for enantioseparations during the last decade. Although extensive research has been conducted in the area of ...

Article

Facile preparation of polysaccharide-coated capillaries using a room temperature ionic liquid for chiral separations

Stavrou, Ioannis J.; Moore, L.; Fernand, V. E.; Kapnissi‐Christodoulou, Constantina P.; Warner, I. M. (2013)

In this study, the dissolution of polysaccharides into an ionic liquid was investigated and applied as a coating onto the capillary walls of a fused-silica capillary in open-tubular CEC. The coating was evaluated by examining ...

Article

Investigation of the stability of polyelectrolyte multilayer coatings in open-tubular capillary electrochromatography using laser scanning confocal microscopy

Kapnissi‐Christodoulou, Constantina P.; Lowry, M.; Agbaria, R. A.; Geng, L.; Warner, I. M. (2005)

A simple polyelectrolyte multilayer (PEM) coating procedure was used for the development of stable modified capillaries. PEM coatings were constructed in fused-silica capillaries using alternating rinses of cationic and ...

Article

Open-tubular capillary electrochromatography using a polymeric surfactant coating

Kamande, M. W.; Kapnissi‐Christodoulou, Constantina P.; Zhu, X.; Akbay, C.; Warner, I. M. (2003)

A stable polyelectrolyte multilayer (PEM) coating was investigated for use in open-tubular capillary electrochromatography (o-CEC). In this approach, the PEM consisted of the cationic polymer of a quaternary ammonium salt, ...

Article

Open-tubular capillary electrochromatography/electrospray ionization-mass spectrometry using polymeric surfactant as a stationary phase coating

Zhu, X.; Kamande, M. W.; Thiam, S.; Kapnissi‐Christodoulou, Constantina P.; Mwongela, S. M.; Warner, I. M. (2004)

We describe the use of the polymeric surfactant poly(sodium undecylenic sulfate) (poly-SUS) as a stationary phase coating in open-tubular capillary electrochromatog raphy (OT-CEC) coupled with electrospray ionization-mass ...

Article

Separation of acetylcholinesterase inhibitors using polymeric surfactants in polyelectrolyte multilayer coatings

Constantinou, A. S.; Nicolaou, I. N.; Kapnissi‐Christodoulou, Constantina P. (2012)

The main objective of this study is the use of polymeric surfactants in polyelectrolyte multilayer (PEM) coatings for the separation of the pharmaceutical substances acetylcholinesterase inhibitors (AChEIs). AChEIs are ...

Article

Separation of benzodiazepines using capillary electrochromatography

Kapnissi‐Christodoulou, Constantina P.; Warner, I. M. (2004)

Benzodiazepines are often used for the treatment of epilepsy, convulsions, and many psychiatric disorders. The widespread use of this class of drugs has occasionally raised concern about recreational benzodiazepine abuse ...