Conjugated microporous polymers (CMPs) containing tetraphenylethylene (TPE) were synthesized via the Suzuki coupling polymerization. The tetrafunctional TPE moiety in the polymer backbone was linked with the difunctional phenylene group to exhibit a porous structure with high fluorescence in the solid state because of aggregation-induced emissive TPE. The porous polymer with a fluorescent TPE group successfully detected nitroaromatic explosive compounds that exhibited fluorescence quenching, in which the polymer shows high quenching efficiency to picric acid among nitroaromatic explosive compounds. The interaction between the electron-rich TPE group and the electron-deficient nitroaromatic compounds played a decisive role in fluorescence quenching via a photoinduced electron transfer (PET). Compared with a linear polymer containing TPE, the porous, crosslinked polymer showed better sensing performance toward nitroaromatic compounds, presumably because of the more efficient interaction between TPE and nitroaromatic compounds in the pores of TPE-based CMP (TPE-CMP). Results and discussionCompounds 1 and 2 were synthesized according to a previously published method. 39 The synthetic route to TPE-CMP is illustrated in Scheme 1, where TPE-CMP was prepared via a Suzuki Scheme 1 Synthesis of polymers.34292 | RSC Adv., 2018, 8, 34291-34296This journal is

Fluorescent conjugated polymers (CPs) for blue, green, and red emission were polymerized via the Suzuki coupling reaction.

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We prepared Prussian blue (PB) nanoparticles immobilized on the surface of nanofibers to adsorb the Cs ions effectively. The nanofibers were fabricated by electrospinning of polyacrylonitrile (PAN), and polydopamine (PD) was polymerized to immobilize PB on the surfaces of the nanofibers. PD is known to adhere easily on any substrate, and it could coat the surface of the PAN nanofibers. The catechol groups in PD could also bind to Fe­(III) and Fe­(II) ions, and subsequently, the Fe ions reacted further to form PB nanoparticles, in which PB was located on the surface of PAN nanofibers. The colloidal PB nanoparticles were immobilized on the substrate, and thus they could be easily separated from the metal mixture after Cs ion adsorption. The adsorption isotherm and kinetics of the nanofibrous adsorbent were investigated, indicating monolayer chemisorption of the Langmuir type. The PB-modified nanofibers were stable and the removal efficiency for Cs ions was not varied after five times of regeneration.