Journal
CHEMISTRY-A EUROPEAN JOURNAL
Volume 20, Issue 24, Pages 7389-7395Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201400389
Keywords
core-shell structures; magnetic properties; metal-organic frameworks; nanoparticles; peptides
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Funding
- National Natural Sciences Foundation of China [21235006]
- Science and Technology Commission of Shanghai Municipality [12JG0500200]
- NSFC [2132106]
- National Key Scientific Instrument and Equipment Development Project [2012YQ120044]
- China State Key Basic Research Program [2013CB911202, 2012CB910601, 2012CB-910101]
- MOST [2012M030900]
- DICP
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Facile preparation of core-shell magnetic metal-organic framework nanospheres by a layer-by-layer approach is presented. The nanospheres have high surface area (285.89 cm(2)g(-1)), large pore volume (0.18 cm(3)g(-1)), two kinds of mesopores (2.50 and 4.72 nm), excellent magnetic responsivity (55.65 emu g(-1)), structural stability, and good dispersibility. The combination of porosity, hydrophobicity, and uniform magnetism was exploited for effective enrichment of peptides with simultaneous exclusion of high molecular weight proteins. The nanospheres were successfully applied in the selective enrichment of endogenous peptides in human serum.
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