title: Hyperbranched polymers containing stereocontorted cores as on-line solid-phase microextraction adsorbent for polycyclic aromatic hydrocarbons.
abstract: A polymer monolith column was prepared using click chemistry for on-line solid phase microextraction of polycyclic aromatic hydrocarbons (PAHs), using 2,2',7,7'-tetraethynyl-9,9'-spirobifluorene(TES) and 1,4-bis(6-azidoalkoxy)benzene (BAB) as monomers, and Cu(PPh3)3Br as the catalyst. The polymer with spirocyclic cross-links was porous and presented an appropriate interspace of PAHs. Enrichment of PAHs, in the range of 100 to more than 1000 times, was due to the π-π stacking interaction and the effect of small size. The factors affecting the on-line microextraction efficiency were optimized, and the analytical conditions were evaluated to ensure reliability.
authors.affiliation: State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China.
authors.forename: Xingmei
authors.initials: X
authors.lastname: Guan
authors.forename: Chuande
authors.initials: C
authors.lastname: Zhao
authors.forename: Xiaoyan
authors.initials: X
authors.lastname: Liu
authors.forename: Haixia
authors.initials: H
authors.lastname: Zhang
mesh_terms: D000327:Adsorption; D057930:Click Chemistry / Q000379:methods; D011084:Polycyclic Aromatic Hydrocarbons / Q000737:chemistry*; D011108:Polymers / Q000737:chemistry*; D052617:Solid Phase Microextraction / Q000379:methods*
chemical_list: D011084:Polycyclic Aromatic Hydrocarbons; D011108:Polymers
keywords: Click chemistry; High-performance liquid chromatography; On-line solid-phase microextraction; Polycyclic aromatic hydrocarbons; Polymer monolith column