Patent ID: 7192629
Filing Date: 2007-03-20
Classification: B29D,G01N,Y10T

Abstract:
1. An article of manufacture comprising: a) a capillary comprising a permeable material that has higher permeability for organic solvents than for water; and b) a separation medium comprising a reversible self-assembled gel that is formed in the capillary from precursor materials comprising an organic solvent, water, and a water soluble polymer with hydrophobic moieties, wherein the reversible self-assembled gel is formed as the organic solvent diffuses through the permeable material of the substrate capillary, and wherein the precursor materials have a lower viscosity than the reversible self-assembled gel, and wherein the article is formed as one or more capillaries filled with the separation medium suitable for use in capillary electrophoresis, and wherein separation medium slows migration of an analyte through the capillaries.