Surface Functionalization Of Electrospun Fibers For Sensitive Detection Of Mercury Ions

Most of heavy metal ions are non-essential elements to the body, and most of them at very low concentrations can cause harm to humans or animals, plants and the environment. Once the heavy metal ions into the natural environment is not easy to remove, while long-term accumulation can cause serious environmental pollution, directly or indirectly cause serious harm to humans. So fast, real and sensitive detection of heavy metal ions is necessary and significant, in that many toxic heavy metal ions and mercury ions and endanger large. In recent years, the detection of mercury ions is very common, and the use of innovative and relatively easy to quickly detect mercury ions are people more interested in research. Fluorescence detection is fast and convenient, but using the aggregation-induce emission (AIE) makes its detection more convenience.This article is the use of AIE effect on fiber membrane matrix for detection of mercuric ions. In this paper, the McMurry Coupling was used to synthesize sulfonate tetraphenylethylene (TPE) with high the water solubility. Six different proportion of polystyrene and poly styrene-co-maleic anhydride were explored to prepare electrospun fibers. Influences on the grafting base tetraphenylethylene and the late fluorescence intensity were investigated. Research also shows that TPE derivatives had little effect on the fluorescence intensity. But the water solubility of the late detection of mercury ions is easier by use of TPE. Cause that the fluorescence intensity is detected before and after the changes are more obvious, so the post-detection option by di-substituted derivatives. The color changes were observed by the naked eye under hand-held ultraviolet light. The detection with the specific fluorescence spectrophotometer may have quantitative and accurate results.