Issue 10, 2014

In situ synthesis of protein-resistant poly(oligo(ethylene glycol)methacrylate) films in capillary for protein separation

Abstract

We report a method to modify a silica capillary with poly(oligo(ethylene glycol)methacrylate) (POEGMA) and its performance for protein separation. We optimized the grafting density and thickness of the POEGMA film and investigated the effect of running buffer pH, ionic strength, separation voltage, and sample injection time. The POEGMA-coated capillary was successfully utilized for the separation of six model proteins. Under optimized conditions, the resolution was found to be much better than a bare capillary, and even better than a widely used, commercially available PEG-modified capillary.

Graphical abstract: In situ synthesis of protein-resistant poly(oligo(ethylene glycol)methacrylate) films in capillary for protein separation

Article information

Article type
Paper
Submitted
26 Nov 2013
Accepted
09 Dec 2013
First published
09 Dec 2013

RSC Adv., 2014,4, 4883-4888

In situ synthesis of protein-resistant poly(oligo(ethylene glycol)methacrylate) films in capillary for protein separation

R. Huang, A. R. Ferhan, L. Guo, B. Qiu, Z. Lin, D. Kim and G. Chen, RSC Adv., 2014, 4, 4883 DOI: 10.1039/C3RA47012A

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