Electrotechnical Institute, Division of Electrotechnology and Materials Science, M Sklodowskiej-Curie 55/61 Street, 50-369 Wroclaw, Poland.
Spectrochim Acta A Mol Biomol Spectrosc. 2010 Feb;75(2):891-900. doi: 10.1016/j.saa.2009.12.030. Epub 2009 Dec 14.
The synthesis and detailed (physico)-chemical ((1)H/(13)C NMR, FTIR, UV-vis and elemental analysis) characterizations of new star-shaped compounds based on tris(2-aminoethyl)amine, including in their structure an azomethine function (HCN-) and alkoxysemiperfluorinated (-O-(CH(2))(3)-(CF(2))(7)-CF(3)), octadecyloxy aliphatic (-O-(CH(2))(17)-CH(3)) chain or two phenyl rings (-Ph-Ph-) as a terminal group, were reported. The mesomorphic behavior was investigated by means of differential scanning calorimetry (DSC), polarized optical microscopy (POM) and additionally by FTIR(T) and UV-vis(T) spectroscopy. Wide-angle X-ray diffraction (WAXD) technique was used to probe the structural properties of the azomethines. Moreover, the azomethine A1 was electro-spun to prepare fibers with poly(methyl methacrylate) (PMMA) and investigated by DSC and POM. Additionally, a film of the A1 with PMMA was cast from chloroform and the thermal properties of the film were compared with the thermal properties of the fiber and powder. It was showed that terminal groups dramatically influence the thermal and optical properties of the star-shaped azomethines.
报告了基于三（2-氨基乙基）胺的新型星形化合物的合成及详细的（物理）化学性质（（1）H/（13）C NMR、FTIR、UV-vis 和元素分析）表征，这些化合物在结构中包含亚胺官能团（HCN-）和全氟辛基烷氧基（-O-（CH（2））（3）-（CF（2））（7）-CF（3））、十八烷氧基脂肪族链（-O-（CH（2））（17）-CH（3））或两个苯环（-Ph-Ph-）作为末端基团。通过差示扫描量热法（DSC）、偏光显微镜（POM）以及傅里叶变换红外光谱（FTIR（T））和紫外可见光谱（UV-vis（T））研究了介晶行为。广角 X 射线衍射（WAXD）技术用于探测亚胺的结构性质。此外，将亚胺 A1 电纺以制备与聚甲基丙烯酸甲酯（PMMA）的纤维，并通过 DSC 和 POM 进行了研究。此外，从氯仿铸膜得到了含有 PMMA 的 A1 膜，并将其与纤维和粉末的热性能进行了比较。结果表明，末端基团显著影响星形亚胺的热学和光学性质。
