The Study Of Synthesis And Ions Recognition Property Of Phenozine Derivatives

With the rapid development of science and technology,new breakthroughs have been made in the chemical field.Supramolecular chemistry,as a scientific system integrating life science,information science,materials science and nanoscience,is not only a simple intersection and integration of many disciplines,but also an effectively play to the advantages of many disciplines.Thus,supramolecular chemistry has been recognized as one source of new concepts and high-tech in the 21st century.After the literature review of the anion recognition in the paper,the paper devises and synthesizes three phenazine derivatives fluorescent probes,and studied their ions recognition property.The main contents of this paper could be separated into 4 parts:Chapter 1:This chapter briefly introduces the research progress of anion and cation fluorescent probes in recent years and the main mechanism and research progress of fluoride ion recognition,and reviews related literature reports in recent years.Chapter 2:The author devises the fluorescence sensor?PS?based on the chromone functionalized phenazine derivative.The sensor can detect Hg²⁺and Ag⁺in aqueous solution through different fluorescence response:when Hg²⁺was added into the PS solution,the fluorescent color of PS changed from yellow to green,and the emission peak shifted from 543 nm to 511 nm.Alternatively,when Ag⁺was added,the fluorescence of PS was quenched.The detection limits of PS for Hg²⁺and Ag⁺were 7.03×10^-8 M and 9.71×10^-7 M,respectively.Furthermore,Ag⁺-coordinated non-fluorescent complexes?PS-Ag⁺?could be used as a new chemical sensor through fluorescent?turn on?response to detect Hg²⁺from aqueous solution.The detection limit of complexes PS-Ag⁺toward Hg²⁺is 2.31×10^-7 M.Chapter 3:The author synthesize 2-methylthio[4,5-b]oxazole phenazine sensor F1 and study the recognition property of F1 toward anions.The experimental results indicate sensor F1 could detect fastly F^-in DMSO solution,and the detection limit of F1 toward F^-is 2.68×10^-7 M.Chapter 4:The author synthesize a phenazine-functionalized pillar[5]arene fluorescence sensor and explore its properties for anions.According to the NMR and fluorescence spectroscopy experiments,the sensor F2 could recognize F^-in the DMSO solution through fluorescent?turn-on?response.Comparing to the sensor F1,the F2 possess lower detection limit for F^-and corresponding detection limit is 1.80×10^-7 M.This sensor F2 combines the advantages of the deficient electron structures of phenazine derivatives and the advantages of the fluorescent groups of pillar[5]arene.It not only can recognize F^-with high sensitivity,but also expands the range of application of phenazine derivatives in ion recognition.