The Study Of Synthesis And Properties Of Diarylthene Fluorescence Sensors Based On Acylhydrazine,Benzothiazole And Salicylaldehyde

With the continuous development of social sciences,diarylethene compounds have been developed and studied.As the most attractive optoelectronic material,this type of compound has been continuously applied to other research directions and fields.For example,acid-base,anion-cation recognition,cell imaging,and the like in molecular ion recognition.It could use its own superiority to achieve multiple regulation in the recognition process.The combination of optical properties such as switching properties and other properties still has broad application prospects and potential research.value.In view of the above reasons,this paper studied the response properties of several diarylethene compounds under multiple control of optical switching and ion recognition.In this paper,several novel diarylene compounds were synthesized by organically linking a group with excellent properties such as hydrazide,benzothiazole and salicylaldehyde to the diarylethene intermediate by means of Schiff base.And its structure was characterized by a variety of methods.Based on this,their optical properties and ion recognition properties were studied.The result show that several diarylene compounds synthesized at room temperature exhibit good photochromic properties in the corresponding solvents.Moreover,DTE-1 and DTE-2 are responsive to anions,DTE-2 and DTE-3 are responsive to cations,and DTE-1 can achieve S₂O₃^2-dual channel recognition in dimethyl sulfoxide,which can be used as a specific S₂O₃^2-fluorescence colorimetric sensor;DTE-2recognizes anion(PO₄^3-)cation(Zn²⁺)in tetrahydrofuran;DTE-3 recognizes cation(Cu²⁺/Zn²⁺/Cd²⁺to varying degrees)in acetonitrile.The specific properties of the compound for Cu²⁺recognition were studied based on the recognition of DTE-4 to Fe³⁺synthesized by XXX.The most important thing is the ion recognition performance of the compound and the diarylene-free switching unit.The intermediates?salicylaldehyde-carbazole schiff base?were compared and it was concluded that the recognition performance of DTE-4 was better than that of salicylaldehyde-carbazole Schiff base?12?,that is,the recognition performance is better after the introduction of the optical switch.