Carbon Nanocluster -hybrid Super Molecules -Design, Thin Film Formation and the Development of Their Novel Functions-

本研究的目的是构建碳纳米管杂化纳米材料。碳纳米管与有机、无机和聚合物材料的结合可能导致构建高性能的脐带状纳米碳材料。主要研究结果如下：碳纳米管可以独立地溶解在含有几种两亲性的溶剂中，这些两亲性分子带有芳香族基团，包括蒽基、菲基和吡喃基。用核磁共振、紫外可见近红外光谱和拉曼光谱对纳米管溶液进行了表征，并在聚苯乙烯-马来酸酐中引入了芳香族结构。用原子力显微镜、UV-Vis-近红外光谱、核磁共振和拉曼光谱对合成的聚合物进行了表征，发现它们是活性碳纳米管的增溶剂，可用于设计和构建具有特定功能的单壁碳纳米管/聚合物复合纳米材料。通过交替吸附聚(DC)-SWNTs和聚(DG)-SWNTs在石英衬底上成功地制备了DNA/碳纳米管薄膜。所得DNA-SWNTs薄膜的UV-Vis-近红外光谱在500-600 nm和1000-1400 nm范围内分别归属于MET-SWNTs和sem-SWNTs。在50次吸附循环后，DNA-SWNTs薄膜出现了来自于衬底上的SWNTs的特征拉曼峰。

The aims of this study are the construction of carbon nanotube-based hybrid nanomaterials. The combination of carbon nanotubes and organic, inorganic and polymer materials may lead to the construction of navel nano carbonmaterials with high performances. The obtained results are summarized as follows.Carbon nanotubes are found to dissolve individually insolvents containing several kinds of amphiphiles carrying an aromatic moiety including anthryl, phenathryl and pyrenyl groups. The sollubilized nantube solutions were characterized by NMR, UV vis-near IR and Raman spectra.We have introduced an aromatic moiety to poly(styrene-alt-maleic anhydride). The synthesized copolymers were characterized by atomic force microscopy, UV-vis-near IR,NMR and Raman spectra and found that they act as "reactive carbon nanotube solubilizers" that should be useful for the design and construction of SWNTs/polymer composite nanomaterials with specific functions.We have already reported that double-stranded DNA dissolves SWNTs in aqueous solutions. DNA/carbon nanotube films were successfully formed by the alternating adsorption of poly(dC)-SWNTs and poly(dG)-SWNTs onto a quartz substrate. UV-vis-near IR spectra for the obtained DNA-SWNTs films showed absorption bands in the region of 500-600nm and 1000-1400 nm that are assignable to met-SWNTs and sem-SWNTs, respectively. The DNA-SWNTs films after the adsorption cycle of 50 times showed characteristic Raman peaks derived from the SWNTs on the substrate.