Fabrication of new photofunctional nanomaterials due to magnetic control of nanostructures and photophysical properties

(1)在供体-C；60&gt；连接化合物和吩噻嗪纳米簇光诱导电子转移反应中发现了新的磁场效应。(2)C_&lt；60&gt；纳米簇修饰电极的光电化学反应中发现了新的磁场效应。60&gt；纳米簇-吩噻嗪体系考察了碳纳米簇-吩噻嗪体系修饰电极的光电化学反应的MFE。在磁场作用下，光电流显著增大，MFE可用自由基对机制解释。(3)磁处理对含锌锰纳米颗粒薄膜发光性能的影响…单层薄膜的发光偏振度在外加磁场的作用下，制备出了更多的ZnS：Mn纳米粒子。(4)单壁碳纳米管或碳纳米管/导电聚合物复合材料的磁取向与有机化。原子力显微镜图像显示，单壁碳纳米管或SWNT/poly[2-methoxy-5-(2‘-ethylhexyloxy)-1，4-phenylene[乙烯](MEHPPV)复合材料在0T方向上是随机取向的，而在8T时，复合材料的管轴方向平行于磁场。根据偏振吸收光谱的观察，可以得到单壁碳纳米管或碳纳米管/导电聚合物复合材料的磁取向。利用垂直方向的强磁场观察到一定数量的单壁碳纳米管纳米纤维组成的束状组织网络。(5)采用聚合物包裹法制备了MEHPPV、Ru(Bpy)3^&lt；2&gt；/PSS/单壁碳纳米管复合光敏剂修饰电极的光电化学反应。用SWNT/MEHPPV或SWNT/PSS/Ru(Bpy)_3、Ru(Bpy)_2&gt；较少

(1) Novel magnetic field effects (MFEs) in photoinduced electron-transfer reactions in donor-C_<60> linked compounds and C_<60> nanocluster phenothiazine systemNovel magnetic field effects have been found in photoinduced electron-transfer reactions in donor-C_<60> linked compounds.^<1)> We have alsoexamined the MFEs on the dynamics of radical pair generated by the photoinduced intermolecular electron-transfer reaction between C_<60> nanocluster and phenothiazine.(2) MFEs on the photoelectrochemical reactions of electrodes modified with C_<60> nanocluster-phenothiazine systemThe MFEs on the photoelectrochemical reactions of electrodes modified with C_<60> nanocluster-phenothiazine system were examined. In the presence of magnetic field, photocurrents appreciably increased and the MFEs can be explained by radical pair mechanism.(3) Effect of magnetic process on luminescence properties of films with ZnS : Mn nanoparticlesThe polarization degrees of luminescence for the monlayered films wi … More th ZnS : Mn nanoparticles were enhanced by preparation under applying magnetic field. The enhancements are probably caused by magnetic orientation of the ZnS : Mn nanoparticles on the quartz substrates.(4) Magnetic orientation and organization of single-walled carbon nanotubes (SWNTs) or composite between SWNT and conductive polymerThe AFM images indicate that SWNTs or the SWNT/poly[2-methoxy-5-(2'-ethylhexyloxy)-1,4-phenylene vinylene] (MEHPPV) composites are oriented randomly in 0 T, while oriented with the tube axis of the composites parallel to the magnetic field at 8 T. On the basis of observations including the polarized absorption spectra, the magnetic orientation of the SWNTs or the SWNT/MEHPPV composites could be achieved. Network of organization of bundles consisting of a certain amount of nanofibers of SWNTs was observed by use of strong magnetic field with vertical direction.(5) Photoelectrochemical reactions of modified electrodes consisting of composites between photosensitizers and SWNTComposite materials between MEHPPV, or Ru(bpy)_3^<2+>/PSS complex and SWNTs were fabricated using polymer wrapping method. The electrode modified with SWNT/MEHPPV or SWNT/PSS/Ru(bpy)_3^<2+> composite showed photocurrent response due to photoexcitaion of MEHPPV or Ru(bpy)_3^<2+>. Less