卤素离子对甲基咪唑在铜电极表面增强拉曼光谱的增敏作用

摘要：考察了卤素离子种类（C1^-、Br^-、I^-）及浓度对于甲基咪唑（MMI）在铜电极表面的表面增强拉曼光谱（SERS）的影响．当MMI组装浓度为1×10^-5mol·L^-1时，加入0．1mol·L^-1KCl溶液能得到清晰的MMI的SERS光谱．而当组装浓度为1×10-mol·L^-1时，加入饱和KCl溶液也可以得到MMI的SERS光谱．结果表明：对于此类体系其他卤素离子（Br^-、I^-）对于MMI的SERS信号同样有增强作用．

Effect of the halide ion on the surface-enhanced Raman scattering spectroscopy of methimazole on copper surface

Surface-enhanced Raman scattering(SERS) spectra of methimazole(MMI) on copper electrode were investigated in the presence of halide ions(Cl-,Br-,I-).The result showed that at the concentration of 1×10-5 MMI,a clear SERS spectrum could be observed in the presence of 0.1 mol·L-1 KCl solution.Even at the concentration 1×10-7 mol·L-1,the SERS spectrum was also observed in the presence of saturated KCl solution.The result showed that the SERS spectra of MMI can also be affected by other halide ions.