Journal
ACS BIOMATERIALS SCIENCE & ENGINEERING
Volume 6, Issue 3, Pages 1387-1396Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsbiomaterials.9b01793
Keywords
MOF-derived materials; orientation contraction; polydopamines; polymer-mediated; enhanced selective enrichment
Categories
Funding
- National Key Research and Development Program of China [2016YFA0203101, 2017YFC0906902]
- Natural Science Foundation of China [21575076, 21621003, 81872835, 81473174]
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It is highly required to develop well-designed separation materials for the specific isolation of certain proteins in proteomic research. Herein, the new type of metal organic framework (MOF)-derived polymer-mediated magnetic hollow nanocages was fabricated via stress-induced orientation contraction, which was further applied for specific enrichment of proteins. The core shell nanocomposites comprised of polymer-mediated ZIF-67 cores and polydopamine (PDA) shells, after annealing, generated magnetic hollow carbon nanocages with hierarchical pores and structures. Particularly, the magnetic carbonized PDA@F127/ZIF-67 hollow nanocages exhibited a remarkable adsorption capacity toward bovine hemoglobin (BHB) up to 834.3 mg g(-1), which was significantly greater than that of the directed carbonized ZIF-67 nanoparticles. The results also exhibited the notable specificity of the obtained nanocages on complex biosamples, including intact mixed proteins and fetal calf serum. The hierarchically hollow porous structure greatly improves the specific surface area and reduces the mass transfer resistance, leading to enhanced high adsorption for target protein BHB. This novel method will be promising for the applications in purification and enrichment of biomacromolecules for complex biosamples, which successfully solve the problem of low adsorption efficiency and tedious separating process of the previous MOF-derived materials.
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