title: Synthesis of bifunctionalized mesoporous organosilica spheres for high-performance liquid chromatography.
abstract: Phenyl-functionalized mesoporous ethane-silicas with spherical morphology were synthesized by one-step co-condensation of phenyltrimethoxysilane (PTMS) and 1,2-bis(trimethoxysily)ethane (BTME) using a triblock copolymer EO(20)PO(70)EO(20) (P123) as template with the aid of a co-surfactant (cetyltrimethylammonium bromide, CTAB) and a co-solvent (ethanol) in acidic medium. Powder X-ray diffraction (XRD), nitrogen sorption measurement and scanning electron microscopy (SEM) show that phenyl-functionalized ethane-silica has wormhole-like mesostructure and perfect spherical morphology. The chemical stability of phenyl-functionalized mesoporous ethane-silica in basic medium is greatly improved owing to the ethane groups bridged in the mesoporous framework. This work also demonstrates that the phenyl-functionalized mesoporous ethane-silica spheres are excellent packing materials for potential application in the reversed-phase high-performance liquid chromatography (HPLC).
authors.affiliation: State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, China.
authors.forename: Guiru
authors.initials: G
authors.lastname: Zhu
authors.forename: Qihua
authors.initials: Q
authors.lastname: Yang
authors.forename: Dongmei
authors.initials: D
authors.lastname: Jiang
authors.forename: Jie
authors.initials: J
authors.lastname: Yang
authors.forename: Lei
authors.initials: L
authors.lastname: Zhang
authors.forename: Ying
authors.initials: Y
authors.lastname: Li
authors.forename: Can
authors.initials: C
authors.lastname: Li
mesh_terms: D002851:Chromatography, High Pressure Liquid / Q000295:instrumentation*; D008855:Microscopy, Electron, Scanning; D008863:Microspheres; D011084:Polycyclic Aromatic Hydrocarbons / Q000302:isolation & purification; D012822:Silicon Dioxide / Q000138:chemical synthesis*; D017550:Spectroscopy, Fourier Transform Infrared
chemical_list: D011084:Polycyclic Aromatic Hydrocarbons; D012822:Silicon Dioxide