Liquid-crystalline fullerene-ferrocene dyads
Liquid-crystalline fullerene-ferrocene dyads
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DOI：
10.1039/b316085h
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发表时间：
2004-01-01
影响因子：
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通讯作者：
Deschenaux, R
中科院分区：
文献类型：
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作者：
Campidelli, S;Vázquez, E;Deschenaux, R
1,3-偶极环加成反应用于组装富勒烯、二茂铁和第二代液晶氰基联苯树枝状聚合物。目标化合物在 40 至 135°C 范围内显示出对映体近晶 A 相。 d 层间距通过 X 射线衍射测定，发现与温度无关，值为 95 埃。分子建模和结构考虑表明近晶层内介晶分子单元的部分双层组织。通过电化学技术研究了基本成分（二茂铁、富勒烯、树枝状聚合物）的氧化或还原过程，结果与结构一致。确定了从二茂铁到富勒烯的光诱导电子转移，很可能是通过“通过空间”机制。
The 1,3-dipolar cycloaddition reaction was used to assemble fullerene, ferrocene and a second-generation liquid-crystalline cyanobiphenyl-based dendrimer. The targeted compound displayed an enantiotropic smectic A phase from 40 to 135degreesC. The d-layer spacing was determined by X-ray diffraction, and was found to be independent of temperature with a value of 95 Angstrom. Molecular modeling and structural considerations suggested partial bilayer organization of the mesogenic molecular units within the smectic layers. Oxidation or reduction processes of the basic components (ferrocene, fullerene, dendrimer) were investigated by electrochemical techniques, and were in agreement with the structure. Photoinduced electron transfer from ferrocene to fullerene was identified, most likely with a "through space" mechanism.