Is cross-linked polyacrylamide good for capillary isoelectric focusing?

Attempts have been made toward this direction, but cross-linked polyacrylamide coatings have not been demonstrated to be much superior over linear polyacrylamide ones. In this report, we have reexamined this approach and demonstrated that cross-linked polyacrylamide could be excellent for capillary isoelectric focusing.

What is cross-linked polyacrylamide coating?

A simple device and a new coating protocol have been developed to produce this coating reliably and reproducibly. Compared to the commercial linear polyacrylamide and hydroxypropyl cellulose coatings for CIEF, the cross–linked polyacrylamide coating is much more stable and robust although their initial performances are comparable.

How is polyacrylamide used for capillary wall coating?

Polyacrylamide has been used for capillary wall coating for decades. The coating chemistry includes two main steps:  (i) attachment of a bifunctional reagent containing a vinyl group to the silica surface and (ii) extension of the anchored vinyl groups through acrylamide polymerization.

Are cross-linked polyacrylamide coatings better than linear acrylamide?

Cross-linking the polyacrylamide molecules anchored around these poorly coated spots seems to be a straightforward solution to this problem. Attempts have been made toward this direction, but cross-linked polyacrylamide coatings have not been demonstrated to be much superior over linear polyacrylamide ones.

What are dynamic coating types for capillary electrophoresis of proteins?

The most frequently used dynamic capillary coating types for capillary electrophoresis of proteins. Zhang and coworkers applied zwitterionic sulfobetaine surfactants as dynamic coating agents for capillary isoelectric focusing (CIEF) of proteins.

Can nanomaterials improve protein separation performance in capillary electrophoresis?

The advent of nanomaterials as novel capillary coating option is introduced. Capillary coatings effectively improve the separation performance of proteins in capillary electrophoresis, mainly by reducing protein adsorption onto the inner capillary wall and by regulating the electroosmotic flow (EOF) to accommodate the separation problem in hand.