| 强磁场对四苯基卟啉及其Co(Ⅱ)/Zn(Ⅱ)配合物的影响 |
| Effect of Magnetic Field on Tetraphenylporphyrin and Its Co(Ⅱ)/Zn(Ⅱ) Coordination Compounds |
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| 摘要: 为研究强磁场对卟啉类化合物的影响，以四苯基卟啉（TPP）为研究对象，比较分析了无外加磁场和强磁场条件下TPP的结晶，及Co2+、Zn2+与TPP的配位反应。采用X射线粉末衍射测试不同磁场强度下获得的TPP晶体，紫外分光光度计快速测定了不同磁场强度下配合物产率，并分析了配位反应的动力学。TPP的结晶度随磁场强度的增强而提高，晶体尺寸随磁场强度的增加而增大；随磁场的增强，四苯基钴卟啉（CoTPP）和四苯基锌卟啉（ZnTPP）的产率下降，但两者的反应动力学不受磁场影响，其反应速率随磁场强度提高而下降。由研究结果可知，强磁场有利于四苯基卟啉的结晶取向，四苯基卟啉在溶液中垂直于磁场取向是配位反应速率降低的主要原因，随磁场强度的增加，四苯基卟啉的取向程度提高。 |
| 关键词: 强磁场 四苯基卟啉 配位反应 结晶 取向 |
| 基金项目: |
| Abstract: To investigate the effect of strong magnetic field on the chemical reactions and properties of biological important molecules, as a part of this research, tetra-phenyl porphyrin and its metalloporphyrin coordination reaction were chosen to extended study. The TPP crystals, obtained at different magnetic field, were measured by X-ray powder diffraction. The yields of cobalt porphyrin (CoTPP) and zinc porphyrin (ZnTPP) at different magnetic field intensities were determined by UV -Vis spectrophotometer. The conversion rates of cobalt porphyrin (CoTPP) and zinc porphyrin (ZnTPP) in different magnetic fields, as well as the reaction kinetics of Co2+ and Zn2+ coordination with TPP were analyzed, respectively. The results show that the crystallinity of TPP increases with the intensity of magnetic field. The yield and reaction rate of CoTPP and ZnTPP decreased with the increase of magnetic field intensity, but the magnetic field intensity made no effect on the reaction kinetics. According to the research results, high magnetic field is beneficial to the crystallization of tetraphenyl porphyrin, and the orientation of tetraphenyl porphyrin perpendicular to the magnetic field in the solution is the main reason for the decrease of coordination reaction rate. With the increase of magnetic field intensity, the orientation degree of tetraphenyl porphyrin increases. |
| Keywords: high magnetic field tetraphenyl porphyrin coordination reaction crystallization orientation |
| 投稿时间：2019-11-18 修订日期：2020-03-27 |
| 摘要点击次数: 1921 |
| 全文下载次数: 1202 |
| 杜次,楚增勇,胡天娇,吴文健,李效东.强磁场对四苯基卟啉及其Co(Ⅱ)/Zn(Ⅱ)配合物的影响[J].无机化学学报,2020,36(7):1291-1297. |
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