title: Triarylboron-Linked Conjugated Microporous Polymers: Sensing and Removal of Fluoride Ions.
abstract: A luminescent conjugated microporous polymer (BCMP-3) has been synthesized in high yield by a carbon-carbon coupling reaction using triarylboron as a building unit. BCMP-3 was fully characterized by using powder X-ray diffraction analysis, Fourier transform infrared spectroscopy, (13) C solid-state NMR spectroscopy, field emission scanning electron microscopy, thermogravimetric analysis, and nitrogen and carbon dioxide adsorption. The new three-dimensional conjugated framework possess a high Brunauer-Emmett-Teller (BET) specific surface area up to 950 m(2)  g(-1) with a pore volume of 0.768 cm(3)  g(-1) , good stability, and abundant boron sites in the skeleton. Under excited-light irradiation, BCMP-3 exhibits strong fluorescent emission at 488 nm with a high absolute quantum yield of 18 % in the solid state. Polymer BCMP-3 acts as a colorimetric and fluorescent chemosensor with high sensitivity and selectivity for F(-) over other common anions. In addition, the polymer also works as an adsorbent for F(-) removal and shows good adsorption capacities of up to 24 mg g(-1) at equilibrium F(-) concentrations of 16 mg L(-1) and a temperature of 298 K. The adsorption kinetics and isotherm were analyzed by fitting experimental data with pseudo-second-order kinetics and Langmuir equations. Furthermore, we highlight that BCMP-3 is an adsorbent for fluoride removal that can be efficiently reused many times without loss of adsorption efficiency.
authors.affiliation: State Key Laboratory for Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012 (P.R. China).
authors.forename: Zhongping
authors.initials: Z
authors.lastname: Li
authors.affiliation: State Key Laboratory for Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012 (P.R. China).
authors.forename: He
authors.initials: H
authors.lastname: Li
authors.affiliation: State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Technology, Jilin University, Changchun 130012 (P.R. China).
authors.forename: Hong
authors.initials: H
authors.lastname: Xia
authors.affiliation: CAS Key Laboratory of Nanosystem and Hierarchy Fabrication, National Center for Nanoscience and Technology, Beijing 100190 (P.R. China).
authors.forename: Xuesong
authors.initials: X
authors.lastname: Ding
authors.affiliation: State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, Jilin University, Changchun 130012 (P.R. China).
authors.forename: Xiaolong
authors.initials: X
authors.lastname: Luo
authors.affiliation: State Key Laboratory for Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012 (P.R. China). xm_liu@jlu.edu.cn.
authors.forename: Xiaoming
authors.initials: X
authors.lastname: Liu
authors.affiliation: State Key Laboratory for Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012 (P.R. China).
authors.forename: Ying
authors.initials: Y
authors.lastname: Mu
keywords: chemosensors; fluoride removal; fluoride sensing; luminescence; polymers