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Hemei Chen, Chunhui Deng and Xiangmin Zhang Synthesis of Fe3O4@SiO2@PMMA Core–Shell–Shell Magnetic Microspheres for Highly Efficient Enrichment of Peptides and Proteins for MALDI-ToF MS Analysis Angewandte Chemie International Edition 49

Article first published online: 9 DEC 2009 | DOI: 10.1002/anie.200904885

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Particularly enriching: Core–shell–shell Fe3O4§SiO2§PMMA composite microspheres (see picture; PMMA=poly(methyl methacrylate)) were synthesized readily by combining a sol-gel approach with a seeded aqueous-phase radical polymerization method. The microspheres were successfully applied toward the effective, rapid, and convenient enrichment of low-concentration peptides and proteins for mass spectrometric analysis.

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