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首页> 外文期刊>American Journal of Analytical Chemistry >Some Hybrid Systems of Chiral Schiff Base Zn(II) Complexes and Photochromic Spiropyrans for Environmental Ion Sensing
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Some Hybrid Systems of Chiral Schiff Base Zn(II) Complexes and Photochromic Spiropyrans for Environmental Ion Sensing

机译：手性席夫碱锌（II）配合物和光致变色螺旋藻的一些混合系统，用于环境离子传感

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This is a review article including our recent results and some previous photo functional hybrid system having potential applications for environmental ion sensing. We have prepared several new and known chiral Schiff base Zn(II) complexes and measured (and also calculated) absorption and fluorescence spectra for sole complexes. After assembling hybrid systems with 1,3,3-trime- thylindolino-6’-nitrobenzopyrylospiran (SP) in methanol solutions, we measured spectral changes before and after alternate irradiation of UV and visible light. Intensity of fluorescence spectra for pale yellow Zn(II) complexes (λem = 450 nm, λex = 270 and 360 nm) was quenched by colorless SP (λem = 533 nm, λex = 612 nm). After UV light irradiation to form purple merocyanine (MC), photoisomerization resulted in changes of the intensity of absorption spectra as well as fluorescence spectra. Thus the hybrid systems could successfully act as molecular logic circuit by input (excitation by light) and output (intensity of fluorescence peaks). Moreover, we investigated concentration dependence of doped Zn(II) and Cu(II) ions to confirm quenching of intensity of fluorescence peaks by Zn(II) and Cu(II) MC complexes for metal ion sensing in solutions.
机译：这是一篇评论文章，包括我们的最新结果和一些以前的光功能混合系统，这些系统在环境离子感测方面具有潜在的应用。我们准备了几种新的和已知的手性席夫碱Zn（II）配合物，并测量（并计算了）唯一配合物的吸收光谱和荧光光谱。在甲醇溶液中组装了具有1,3,3-间苯三酚-6'-硝基苯并吡喃螺喃（SP）的混合系统后，我们测量了交替照射紫外线和可见光前后的光谱变化。浅黄色Zn（II）配合物（λem= 450 nm，λex= 270和360 nm）的荧光光谱强度通过无色SP（λem= 533 nm，λex= 612 nm）淬灭。紫外线照射后形成紫色花菁（MC），光异构化导致吸收光谱和荧光光谱的变化。因此，混合系统可以通过输入（光激发）和输出（荧光峰的强度）成功地充当分子逻辑电路。此外，我们研究了掺杂的Zn（II）和Cu（II）离子的浓度依赖性，以确认溶液中用于金属离子传感的Zn（II）和Cu（II）MC络合物对荧光峰强度的淬灭。

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