Preparation Of Ferrocene-triazole Schiff Base-MoS₂ Functional Material

As a representative of transition metal complexes,ferrocene has a specific structure that enables it to have the dual properties of ligand and transition metal,and has very broad application prospects in various fields.In addition,molybdenum disulfide(MoS₂),a typical representative of transition metal sulfides,exhibits unique properties during exfoliation,such as a special band structure and high carrier mobility.The functional modification of MoS₂ nanomaterials with ferrocene derivatives has very important research value for expanding the application range of MoS₂nanomaterials.In this paper,four ethyl arylformates were used as starting materials to synthesize1,2,4-triazole compounds(4a-4d)substituted by different groups with hydrazine hydrate,KOH and CS₂ successively,and used them as""Bridge"connects ferrocene and MoS₂,and the compound was characterized by IR,~1H NMR,and SEM.Secondly,the compound(4a-4d)was condensed with ferrocene formaldehyde to obtain the ferrocene-triazole Schiff base compound(5a-5d).The compound was characterized by IR,~1H NMR,and SEM,which prove that the Schiff base compound was successfully prepared.Then,MoS₂ was exfoliated by Li-ion intercalation,and it was covalently functionalized with compounds(5a-5d)by S-vacancy chemical grafting to obtain the ferrocene-triazole Schiff base-MoS₂ function Materials(6a-6d).It was characterized by XPS,SEM,and EDS,which proved that compounds(5a-5d)were successfully covalently grafted to the exfoliated MoS₂ surface.Finally,the conductivity of compounds(5a-5d)and functional materials(6a-6d)were tested and analyzed.The results show that the conductivity of the material after the stripping layer MoS₂ is covalently functionalized has been significantly improved,and the conductivity of materials with different substituent groups is quite different,and the conductivity of the material can be adjusted by connecting different substituent groups.The antibacterial performance test results of compounds(4a-4d),compounds(5a-5d)and functional materials(6a-6d)show that the three types of materials have certain antibacterial properties against Escherichia coli and Staphylococcus aureus.Among them,halogen atoms the Cl-substituted compounds 4d,5d and 6d have the best antibacterial effects.This shows that the addition of ferrocene Schiff base has significantly improved the conductivity and antibacterial properties of the stripped MoS₂.