Journal
CHEMPLUSCHEM
Volume 82, Issue 6, Pages 933-938Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cplu.201700223
Keywords
core-shell composites; covalent organic frameworks; hydrophobic effect; liquid chromatography; stationary phase
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Funding
- National Basic Research Program of China [2015CB932001]
- National Natural Science Foundation of China [21305071]
- Tianjin Natural Science Foundation [14JCZDJC37600, 14JCQNJC06600]
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A facile, in situ growth strategy for the synthesis of monodispersed COF@SiO2 microspheres is reported. The microspheres have uniform and controllable COF shells, and are used as the stationary phase for HPLC. The TpBD COF, constructed from 1,3,5-triformylphloroglucinol (Tp) and benzidine (BD), is taken as the COF shell, and aminosilica (SiO2-NH2) is employed as the core to support the TpBD shell. The TpBD shell thickness is adjusted by controlling the concentrations of the Tp and BD monomers. The TpBD@SiO2 packed columns show excellent hydrophobic selectivity, and good reproducibility for the separation of neutral (toluene and ethylbenzene, polycyclic aromatic hydrocarbons), acidic (hydroquinone, p-cresol, and p-chlorophenol), and basic molecules (nucleobases, nucleosides, and deoxynucleosides).
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