Design, Preparation And Properties Of Fluorescent Sensor/Nanofibrous Chemosensing Materials

Organic fluorescent chemosensor has many advantages for easy synthesis, fastresponse, good selectivity, high detection limit and it has been paid more attention inrecent years. It also has broad application prospects in environmental science,biological science and other fields. In our research, we synthesis a serious offluorescent chemosensor and functional materials based on coumarin orsalicylaldehyde, and test their chemical structure, optical properties, detectioncapability and materials science aspects by means of1H-NMR,13C-NMR, FT-IR,AFS, ICP, SEM and other instruments,.1.A novel coumarin derivative fluorescent chemosensor materials has beensynthesized successfully. It showed good selectivity for Fe3+with a wide pH span,fast response and high sensitivity. Moreover its excellent hydrophilia will be apply todetect Fe3+in natural environment water.2.A novel salicylaldehyde-modified electrospun nanofibrous film for sensing andadsorbing Zn2+was synthesis. Upon addition of common metal ions, only Zn2+causesa30-folds fluorescence enhancement to this film at504nm in emission spectra.Moreover the film exhibits excellent adsorbent efficiently toward Zn2+(11.45mg/g)due to the high surface area-to-volume ratio of the nanofibrous film structure.3.We successfully synthesized a novel fluorescent chemosensor based onsalicylaldehyde and hydrazine hydrate. It has the advantages of simple structure, rapidresponse to Cu2+in fluorescent enhancement. What’s more, the other metal ions donot cause obvious fluorescence change to this chemosensor.4.We prepared a novel salicyl aldehyde based nanofibrous material for detectingmetal ions. We found that the nanofibrous material has good selectivity and sensitivityfor Cu2+in aqueous solution with fluorescence enhancement effect. Moreover, this nanofibrous material has the potential application for quantitatively analyzing Cu2+.5. A novel salicylaldehyde-modified electrospun nanofibrous film for sensingand adsorbing Zn2+was synthesis. Upon addition of common metal ions, only Zn2+causes a15-folds fluorescence enhancement to this film at484nm in emission spectra.Moreover the film exhibits excellent adsorbent efficiently toward Zn2+(17.83mg/g)due to the high surface area-to-volume ratio of the nanofibrous film structure.