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

由于纳米结构和光物理性质的磁控制而制造新型光功能纳米材料

• 批准号: 17550131
• 负责人: YONEMURA Hiroaki
• 金额: $ 2.37万
• 依托单位: KYUSHU UNIVERCITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2005
• 资助国家: 日本
• 起止时间: 2005 至 2006
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-17550131/
• 关键词: magnetic field effects; single-walled carbon nanotubes; magnetic orientation; C_<60>; nanocluster; photoelectrochemical reaction; nanop article; electron-transfer; カーボンナノチューブ; 光電気化学; 半導体ナノ粒子; 修飾電極; 光機能ナノ材料; ナノ構造; 発光; ナノチューブ; フラーレン; 強磁場

(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

(1)C_2-<60>链化合物和C<60>_2-吩噻嗪纳米团簇体系光诱导电子转移反应中的新磁场效应研究发现了C_2-链化合物光诱导电子转移反应中的新磁场效应<60>。（1）研究了C_nanoclusters与吩噻嗪光诱导分子间电子转移反应产生自由基对动力学的MFE<60>。(2)C_2纳米团簇-吩噻嗪体系修饰电极光电化学反应的MFE研究<60>了C_2纳米团簇-吩噻嗪体系修饰电极光电化学反应的MFE<60>。在磁场的存在下，光电流明显增加，MFE可以解释自由基对机制。(3)磁处理对ZnS：Mn纳米颗粒薄膜发光性能的影响 ...更多信息 通过外加磁场制备ZnS：Mn纳米粒子，并对其进行了增强。这种增强可能是由于ZnS：Mn纳米颗粒在石英衬底上的磁性取向引起的。(4)单壁碳纳米管（SWNTs）及其与导电聚合物复合物的磁取向和组织AFM图像表明，SWNTs或SWNTs/聚[2-甲氧基-5-（2 '-乙基己氧基）-1，4-亚苯基亚乙烯基]（MEHPPV）复合物在0 T下是无规取向的，而在8 T下是以管轴平行于磁场的方式取向的。根据包括偏振吸收光谱在内的观察，可以获得单壁碳纳米管或单壁碳纳米管/MEHPPV复合材料的磁取向。在垂直方向的强磁场作用下，观察到一定数量的单壁碳纳米管纳米纤维束形成的网状组织。(5)光敏剂与单壁碳纳米管复合修饰电极的光电化学反应采用聚合物包覆法制备了MEHPPV或Ru（bpy）3 ^&lt;2+&gt;/PSS复合物与单壁碳纳米管的复合材料。SWNT/MEHPPV或SWNT/PSS/Ru（bpy）_3^&lt;2+&gt;复合物修饰电极均表现出由MEHPPV或Ru（bpy）_3^&lt;2+&gt;光激发产生的光电流响应。少

项目成果

Mageneto-Science Magnetic Filed Effects on Materials : Fundamentals and Appications

Mageneto-Science 材料的磁场效应：基础知识和应用

• 发表时间: 2006
• 作者: Hiroaki Yonemura;in M.Yamaguchi;Y.Tanimoto(Eds.)
• 通讯作者: Y.Tanimoto(Eds.)

磁場印加による電子移動過程制御と新規光機能ナノ材料の創製

磁场控制电子转移过程及新型光学功能纳米材料的制备

• 发表时间: 2005
• 期刊: 電気化学および工業物理化学 78・6
• 作者: Yasushi Inouye;Prabhat Verma;Taro Ichimura;Satoshi Kawata(分担執筆);米村 弘明
• 通讯作者: 米村 弘明

Fabrication of thin films modified with organic or inorganic nanoparticles and magnetic control of photophysical and photoelecrochemical properties

用有机或无机纳米粒子修饰的薄膜的制造以及光物理和光电化学性质的磁控制

• 发表时间: 2006
• 期刊: Material Stage 5
• 作者: H.Yonemura et al.;H.Yonemura et al.;S.Moribe et al.;H.Yonemura et al.;H.Yonemura et al.;Y.Yonemura et al.;Y.Yonemura et al.;H.Yonemura et al.;米村 弘明;H.Yonemura et al.;H.Yonemura et al.;S.Moribe et al.;H.Yonemura et al.;米村 弘明;S.Moribe et al.;H.Yonemura et al.;H.Yonemura et al.;H.Yonemura et al.;H.Yonemura
• 通讯作者: H.Yonemura

Photoelectrochemical reactions of electrodes modified with composites between conjugated polymer or ruthenium complex and single-walled carbon nanotubes

共轭聚合物或钌配合物与单壁碳纳米管复合材料修饰电极的光电化学反应

• 发表时间: 2007
• 期刊: Thin Solid Films (in press)
• 作者: M.Hashimoto;T.Asada;T.Araki;Y.Inouye;S.Kawata;H.Yonemura et al.
• 通讯作者: H.Yonemura et al.

Magnetic Field Effects and Time-Resolved EPR Studies on Photogenerated Biradical from Intramolecular Electron Transfer Reactions in Zinc-tetraphenylporphyrin-C_<60> Linked Compounds : Contribution of Relaxation Mechanism due to Spin-Spin Relaxation

锌-四苯基卟啉-C_<60> 连接化合物分子内电子转移反应光生双自由基的磁场效应和时间分辨 EPR 研究：自旋-自旋弛豫引起的弛豫机制的贡献

• 发表时间: 2006
• 期刊: Molecular Physics 104
• 作者: M.Hashimoto;T.Asada;T.Araki;Y.Inouye;S.Kawata;H.Yonemura et al.;H.Yonemura et al.
• 通讯作者: H.Yonemura et al.