Fosso Tene PL, Weltin A, Tritz F, Defeu Soufo HJ, Brandstetter T, Rühe J. Cryogel Monoliths for Analyte Enrichment by Capture and Release.
LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021;
37:11041-11048. [PMID:
34506153 DOI:
10.1021/acs.langmuir.1c01638]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
A platform based on cryogel monoliths in small capillaries, which allows very strong enrichment of an analyte through a capture and release process, is described. For their preparation, a photoreactive copolymer solution containing capture molecules of interest is filled into a capillary, frozen in, and then photochemically transformed into cryogel monoliths through C,H-insertion cross-linking reactions. As a test example, the platform is used for the preconcentration of dopamine from bovine serum albumin and urine samples through capture and release processes. During capture from a large volume and release into a smaller volume, the platform shows recovery rates up to 97% and allows up to a roughly 630-fold enrichment of the concentration of the analyte. The presented platform could be used as a disposable device for the purification and enrichment of a variety of cis-diol-containing samples.
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