Ionic liquids as selectors for the enhanced detection of proteins.

Journal Article (Journal Article)

Herein, we report an approach for protein detection enhanced by ionic liquid (IL) selectors in capillary electrophoresis (CE), with avidin as a model protein. Hydrophilic ILs were added into the running buffer of CE and acted as selectors for sample injection, enriching the positive target and excluding the negative from the capillary. When using 3 % (v/v) IL selector, the detection sensitivity of avidin was improved by over one order of magnitude, while the interference from protein adsorption was effectively avoided, even in an uncoated capillary. The electrochemiluminescence method was initially used for IL-based CE with low noise that was independent of the IL concentration, making ILs almost transparent as additives in the electrophoresis buffer.

Full Text

Duke Authors

Cited Authors

  • Li, T; Li, B; Dong, S; Wang, E

Published Date

  • 2007

Published In

Volume / Issue

  • 13 / 30

Start / End Page

  • 8516 - 8521

PubMed ID

  • 17636468

International Standard Serial Number (ISSN)

  • 0947-6539

Digital Object Identifier (DOI)

  • 10.1002/chem.200700275


  • eng

Conference Location

  • Germany