Supramolecular formation of fibrous nanostructure in donor-acceptor dyad Mint
Supramolecular formation of fibrous nanostructure in donor-acceptor dyad Mint
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DOI：
10.1039/b701438d
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发表时间：
2007-06-21
影响因子：
--
通讯作者：
Hashimoto, Kazuhito
中科院分区：
文献类型：
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作者：
Nishizawa, Takeshi;Tajima, Keisuke;Hashimoto, Kazuhito
合成了一种新型低聚噻吩及其富勒烯衍生物，并对其膜形态进行了研究。AFM图像显示，低聚噻吩在其液晶线温度下热退火后，在膜中形成了排列良好的纤维状纳米结构。在低聚噻吩-富勒烯二元体膜中，纤维已经在铸态膜中形成。热退火进一步增强了结构的顺序和长，部分对齐的纤维纳米结构的宽度约为10 nm和长度长达200 nm的观察。结合X射线分析结果，这些特征归因于低聚噻吩基团通过π-π相互作用进行的超分子自组装。研究了分子的光伏特性。
A novel oligothiophene and its fullerene derivative were synthesized and their film morphologies were investigated. AFM images revealed that the oligothiciphene formed well-aligned fiber-like nanostructures in the film after being thermally annealed at its liquid-crystal line temperature. In the oligothiophene-fullerene dyad film, fibers were already formed in the as-cast film. Thermal annealing further enhanced the structural order and a long, partially aligned fibrous nanostructure with a width of around 10 nm and a length of as long as 200 nm was observed. Combined with the results of X-ray analysis, these features were ascribed to supramolecular self-assembly via pi-pi interaction of the oligothiophene groups. Photovoltaic properties of the molecules were also investigated.