| In contemporary society,although the rapid development of industry and agriculture has brought good news to mankind,the discharge of waste water,waste residue and harmful substances affects the living environment of mankind.Therefore,looking for new technologies and advanced materials to treat industrial organic wastewater has become a current research hotspot.Due to the vigorous development of the material field,porous organic polymers have played an important role in many mature industries.Porous organic polymers(POPs)are a new type of porous material with periodic framework and highly ordered pore structure.It has a large number of functionalized active sites,adjustable pore structure,low framework density,good thermochemical stability and easy synthesis method.It also exhibits higher performance stability under harsh conditions such as acid,alkali and humidity,attracting great research interest from chemists.Due to the diversity of synthesis methods,the structures and properties of materials can be designed and synthesized in advance by selecting appropriate construction units,which greatly expands the construction ideas and synthesis methods of porous materials.These materials are widely used in related fields.The Suzuki reaction is an effective coupling reaction for the synthesis of carbon-carbon bond compounds.The type of reaction is not sensitive to water,with strong substrate adaptability,allows a variety of active functional groups to exist.Its inorganic by-products are non-toxic and easy to remove,and are often used in laboratory material preparation and industrial production.In this article,a series of new porous organic polymers were synthesized through Suzuki coupling reaction by selecting functional organic monomers and boric acid-containing compounds,and the application properties of these porous organic polymers were studied.Firstly,the π-conjugated dibromocarbazole monomers as construction units were selected and reacted with boric acid compounds through Suzuki coupling reaction to prepare super-hydrophobic porous organic polymers LNU-40,LNU-41 and LNU-42.And structures and performances of LNUs are characterized in detail.Due to the introduction of a functionalized hydrophobic groups in the polymer structure and the rough surface morphology of the materials,LNUs exhibit excellent super-hydrophobic properties.According to this property,the LNUs materials are loaded on the surface of the flexible fabrics by a simple soaking method.The resulting super-hydrophobic flexible fabrics are applied to the field of oil and water adsorption and separation.The polymers synthesized by the method have simple preparation,low cost,high separation efficiency,and maintains stable hydrophobic performance under harsh conditions such as strong acid,strong base and high temperatures.It provides a new method for the separation and treatment of oil and water from wastewater in petrochemical,metallurgical and pharmaceutical industries.Secondly,we use π-conjugated dibromopyrene monomer and boronic acid compounds as building elements,prepare a series of fluorescent porous organic polymers LNU-44,LNU-45,LNU-46 and LNU-47 through Suzuki coupling reaction.Due to the pyrene group has a large π-electron delocalization effect,the polymers exhibit high fluorescence characteristics and photoluminescence efficiency,and this type of polymers can be efficient,highly selective and specialized to a variety of organic pesticides.Taking advantage of this feature,the portable fluorescent paper sensor prepared by loading fluorescent porous organic polymer LNUs on ordinary paper by a simple immersion method.The paper sensor can conveniently and quickly detect organic pesticides in the environment.The experimental results show that the LNUs prepared by this method have the advantages of high detection sensitivity and short detection time,and have good application prospects in the fluorescence detection of pesticides. |
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