The synthesis and fluorescence detection properties of benzoquinone-based conjugated microporous/mesoporous polymers

The benzoquinone-based conjugated microporous/mesoporous polymers were synthesized through Sonogashira-Hagihara cross-coupling with tetrabromo-1,4-benzoquinone (TBrBQ) and 1,4-diethynylbenzene (DEB) by both solution polymerization (DBQP) and miniemulsion polymerization (DBQN). The Brunauer-Emmett-Teller (BET) surface areas of these polymers were 356 and 25 m(2) g(-1) and pore average diameter were concentrated at around 2.12 and 3.84 nm for DBQP and DBQN, respectively. The two dimensional pi-conjugated polymer frameworks could be combined with permanent microporous/mesoporous, luminescent properties and abundant oxygen atoms in the skeleton. Fluorescence studies found that both DBQP and DPQN could be utilized as fluorescent chemosensors for picronitric acid (PA) in acetone suspension. (C) 2016 Elsevier Inc. All rights reserved.