Maleic anhydride and acetylene plasma copolymer surfaces for SPR immunosensing
| Authors | |
|---|---|
| Year of publication | 2019 |
| Type | Article in Periodical |
| Magazine / Source | Analytical and Bioanalytical Chemistry |
| MU Faculty or unit | |
| Citation | |
| Web | https://link.springer.com/article/10.1007/s00216-019-01979-9 |
| Doi | http://dx.doi.org/10.1007/s00216-019-01979-9 |
| Keywords | Plasma polymerization; Carboxyl-rich films; Immobilization; Surface plasmon resonance biosensor; Label-free detection |
| Description | We report on the successful application of carboxyl-rich plasma polymerized (PP) films as a matrix layer for bioreceptor immobilization in surface plasmon resonance (SPR) immunosensing. Composition and chemical properties of the carboxyl-rich PP films deposited from a mixture of maleic anhydride and acetylene were investigated. Changes in the films stored in air, water, and buffer were studied and the involved chemical changes were described. Performance in SPR immunosensing was evaluated on interactions of human serum albumin (HSA) with a specific monoclonal antibody. The comparison with the mixed self-assembled monolayer of mercaptoundecanoic acid and mercaptohexanol (MUA/MCH) and one of the most widely used surfaces for SPR, the 2D and 3D carboxymethylated dextran (CMD), was presented to show the efficacy of plasma polymerized matrix layers for biosensing. The PP film-based SPR immunosensor provided a similar detection limit of HSA (100 ng/mL) as MUA/MCH- (100 ng/mL) and 3D CMD (50 ng/mL)-based sensors. Ho |
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