Function of DNA/Conducting Polymer Complex Single Molecules with Highly Ordered Structure

高度有序结构的DNA/导电聚合物复合单分子的功能

• 批准号: 17350089
• 负责人: KOBAYASHI Norihisa
• 金额: $ 8.97万
• 依托单位: Chiba University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2005
• 资助国家: 日本
• 起止时间: 2005 至 2007
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-17350089/
• 关键词: Nanomaterials; Polymer Structure Property; Conjugated Polymer; Polyaniline; DNA; Single Chain; 超階層構造; Ru錯体; AFM像; ネットワーク構造; 電解伸長固定

We successfully prepared a DNA/conducting polymer complex with highly-ordered structure. The highly-ordered structure complex showed unique opt-electronic function. It was found that organic light emitting diode (OLED) was successfully demonstrated with this complex. In this research, in ordered to explore innovative function of the complex in a single macromolecular level and to apply a functional molecular wire, we analyzed the molecular structure of DNA highly ordered structure complex with AFM technique and summarized the relation between the molecular structure and electronic properties of the single macromolecular complex.Before tackling DNA/conducting polymer (polyaniline; PAn) complex, the macromolecular structure of DNA/Ru(bpy)_3^<2+> complex, where lower molar mass Ru(bpy)_3^<2+> was associated with DNA via non-covalent bond, was studied with AFM. A dilute solution of the complex was prepared and cast on mica surface flat in atomic level. From the AFM images of the DNA molecu … More les containing Ru(bpy)_3^<2+> with DNA (phosphate)/ Ru(bpy)_3^<2+> concentration ratio up to 1/1, the DNA complex molecules were entangled to each other forming network structure which could be commonly seen for plain DNA molecules. The height of each fiber was less than 1 nm, indicating the network was formed by single macromolecular DNA complex. Such a kind of networks was not observed in dye-intercalated DNA molecules which formed thick rod and cluster structure. Since DNA/Ru(bpy)_3^<2+> complex shows opt-electronic functions, DNA/Ru(bpy)32+ complex is expected to be a material for functional molecular wire.With the aim of opt-electronic functional molecular wire, bridging of DNA/Ru(bpy)_3^<2+> and DNA/PAn complex molecules between a pair of electrodes was carried out with dielectrophoretic stretching technique. It is well-known that DNA molecule can be stretched between electrodes by applying high-frequency (>1 MHz) and high-voltage (>1MV/m) ac electric fields to the DNA solution. By modifying the technique and coupling other techniques, we succeeded the bridging of DNA/Ru(bpy)_3^<2+> and DNA/PAn complex molecules between a pair of electrodes. Particularly for DNA/PAn complex, the current between electrodes under a certain bias electric field was higher in DNA/PAn complex than in plain DNA. This result clearly indicates that DNA/conducting polymer complex with highly-ordered structure has unique function in single molecular level and is a potent candidate to realize opt-electronic functional molecular wire. Less

我们成功制备了具有高度有序结构的DNA/导电聚合物复合物。高度有序的结构复合物显示出独特的选择性功能。发现有机光发射二极管（OLED）通过这种复合物成功证明。 In this research, in ordered to explore innovative function of the complex in a single macromolecular level and to apply a functional molecular wire, we analyzed the molecular structure of DNA highly ordered structure complex with AFM technique and summary the relationship between the molecular structure and electronic properties of the single macromolecular complex.Before tackling DNA/conducting polymer (polyaniline; PAn) complex, the macromolecular structure of DNA/RU（BPY）_3^<2+>复合物，其中较低的摩尔质量RU（BPY）_3^<2+>通过非共价键与DNA相关联，与AFM一起研究。制备了配合物的稀释溶液，并在原子水平的微观面上铸造。从DNA分子的AFM图像中……更多含有RU（BPY）_3^<2+>的LE，带有DNA（磷酸盐）/ RU（BPY）_3^<2+>浓度率高达1/1，DNA复杂的分子可以与彼此形成的网络结构，通常可以看到平原DNA分子的形成网络结构。每个纤维的高度小于1 nm，表明网络是由单个大分子DNA复合物形成的。在形成较厚棒和簇结构的染料切入的DNA分子中未观察到这种网络。由于DNA/RU（bpy）_3^<2+>复合物显示了选择性电源函数，因此DNA/RU（BPY）32+复合物被预期是功能分子线的材料，其目的是选择性功能性分子线的目的，DNA/RU（BPY）_3^^<2^<2^<2^<2 <2^<2 <2^<2^<2 <2 <2^<2^<2 <2^<2^<2^<2 <2^<2 <2^<2^<2 <2^<2 <2^<2^<2^<2 <2顽固的人工伸展技术。众所周知，通过将高频（> 1 MHz）和高压（> 1MV/m）AC电场涂在DNA溶液中，可以将DNA分子拉伸到电子之间。通过修改技术和耦合其他技术，我们成功地将DNA/RU（BPY）_3^<2+>和DNA/PAN复合物分子桥接在一对电子之间。在DNA/PAN复合物中部分，DNA/PAN复合物中某个偏置电场下电子之间的电流高于普通DNA中的电流。该结果清楚地表明，具有高度有序结构的DNA/导电聚合物复合物在单分子水平上具有独特的功能，并且是实现选择的选择性功能性分子线的潜在候选者。较少的

项目成果

EL Emission Mechanism of DNA Highly Ordered Complex Containing Ru Complex

含Ru配合物的DNA高度有序配合物的EL发射机制

• 发表时间: 2006
• 期刊: Evolving Organic Semiconductor (book)
• 作者: Norihisa KOBAYASHI;他;Norihisa KOBAYASHI 他;Norihisa KOBAYASHI
• 通讯作者: Norihisa KOBAYASHI

フルカラー電子ペーパーを目指すエレクトロクロミック方式

针对全彩电子纸的电致变色方法

• 期刊: 日本画像学会誌 (In press)
• 作者: 小林範久;浦野 光
• 通讯作者: 浦野 光

最新機能性色素大全集(分担)

最新功能染料全集（分享）

• 发表时间: 2006
• 作者: Norihisa;KOBAYASHI;小林範久;小林 範久;小林範久;小林範久
• 通讯作者: 小林範久

Structure and optoelectrical properties of photppolymerized PAn/DNA complex(invite)

光聚合PAn/DNA复合物的结构和光电性能（邀请）

• 发表时间: 2007
• 作者: Norihisa KOBAYASHI;et. al.;Norihisa KOBAYASHI;Norihisa Kobayashi;Takashi Karatsu;Norihisa Kobayashi;Norihisa KOBAYASHI;Norihisa KOBAYASHI;Norihisa KOBAYASHI
• 通讯作者: Norihisa KOBAYASHI

Synthesis and properties of carbazole-based hyperbranched conjugated polymers

• DOI: 10.1016/j.polymer.2007.09.011
• 发表时间: 2007-10
• 期刊: Polymer
• 影响因子: 4.6
• 作者: Jinqing Qu;M. Shiotsuki;Norihisa Kobayashi;F. Sanda;T. Masuda