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Digitale Medien

Thermal treatment for immobilization of chiral polysiloxanes in capillary gas chromatography (1996)

Abe, Iwao ; Terada, Kenji ; Nakahara, Taketoshi

Weinheim : Wiley-Blackwell

Journal of High Resolution Chromatography 19 (1996), S. 91-94

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Details

ISSN: 0935-6304

Schlagwort(e): Chiral selector anchored to polysiloxane ; Chiral phase capillary GC ; Immobilization ; Thermal treatment ; High enantioselectivity ; Chemistry ; Analytical Chemistry and Spectroscopy

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Notizen: The chiral selector L-t-leucine-t-butylamide has been anchored to a polysiloxane by nucleophilic displacement of 2,2,2-trifluoroethyl ester-functionalized block polysiloxanes with L-t-leucine-t-butylamide. Attempts were made to immobilize the chiral polysiloxanes inside the capillaries by thermal treatment at 300°C for 30-90 min. The polysiloxanes were found to be more resistant than Chirasil-Val to the racemization caused by such high temperature treatment. Capillary columns coated with this type of immobilized polysiloxane have shown very high enantioselectivity and thermal stability.

Zusätzliches Material: 3 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/jhrc.1240190206

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