Synthesis and Properties of Chiral Self-Assembling Lamellar Polydiacetylene Systems with Very-Long-Range Order
Synthesis and Properties of Chiral Self-Assembling Lamellar Polydiacetylene Systems with Very-Long-Range Order
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DOI：
10.1021/la981582p
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发表时间：
1999-04
期刊：
影响因子：
3.9
通讯作者：
Guijun Wang and;R. Hollingsworth
中科院分区：
文献类型：
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作者：
Guijun Wang and;R. Hollingsworth
两种新的、易于获得的、手性的、自组装的磷脂类似物，在它们的酰基链中间含有二乙基单元，通过非常简单和高效的途径制备。薄膜被浇铸，然后用紫外光活化或掺杂碘进行聚合。x射线衍射、核磁共振波谱测量和使用MM3力场的分子力学分析表明，酰基链以平行的方式紧密排列。用共聚焦偏振光显微镜、原子力显微镜和近红外光谱等多种物理方法对新分子及其聚合膜进行了表征。这些分析方法表明，未聚合的分子能够形成具有很长有序范围的片层体系。它们形成了非常均匀、非常平坦的薄膜，这些薄膜很容易聚合形成广泛共轭的体系，与典型的聚二乙炔不同，这些体系在近红外区域吸收得很好。T…
Two new, very accessible, chiral, self-assembling phospholipid analogues containing diacetylenic units in the middle of their acyl chains were prepared by very simple and highly efficient routes. Films were cast and then polymerized by activation with UV light or doped with iodine. X-ray diffraction, NMR spectroscopy measurements, and molecular mechanics analyses using the MM3 force field indicated that the acyl chains are closely packed in a parallel fashion. The new molecules and the polymerized films derived from them were characterized by a variety of physical methods including confocal polarized light microscopy, atomic force microscopy, and near-infrared spectroscopy. These analytical methods showed that the unpolymerized molecules are able to form lamellar systems with very-long range order. They formed very uniform, extremely flat, thin films which are readily polymerized to give extensively conjugated systems which absorbed well out into the near-infrared region unlike typical polydiacetylenes. T...