Abstract In this study, we proposed to synthesize soluble poly(azomethine-ether)s derivatives containing aromatic rings and long alkyl groups. For this reason, long alkyl groups containing double bromide or chloride atoms were chosen to synthesize diamines monomers (DIAMs). Seven different poly(azomethine-ether)s were synthesized from the condensation reaction of DIAMs with 4,4′-[1,4-phenylenebis(methyleneoxy)]dibenzaldehyde (PBMODB). The structures of compounds were confirmed by FT-IR, UV–Vis, 1H-NMR and 13C-NMR techniques. The molecular weight distributions of synthesized poly(azomethine-ether)s were determined by size exclusion chromatography (SEC). The synthesized compounds were characterized by solubility tests, TG-DTA and DSC. Optical band gaps of poly(azomethine-ether)s (Eg) were also calculated by UV–Vis spectrophotometer. Electrical conductivities of synthesized poly(azomethine-ether)s were measured by four-point probe technique using a Keithley 2400 electrometer. It was stressed that synthesized poly(azomethine-ether)s were found to be insulators which have a potential for electronic and optoelectronic applications, with fairly high band gaps. Thermal stability properties of synthesized poly(azomethine-ether)s were found to be stable up to 300 °C. The chars of them were observed between 33 and 45% at 1000 °C. Poly(azomethine-ether)s containing flexible ether groups and long alkyl chains showed good solubility in aprotic organic solvents. Graphical Abstract

中文翻译：

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含有芳香族和脂肪族基团的聚（偶氮甲碱-醚）的合成、表征、热和带隙值

摘要 在这项研究中，我们建议合成含有芳环和长烷基的可溶性聚（偶氮甲碱-醚）衍生物。出于这个原因，选择含有双溴或氯原子的长烷基来合成二胺单体 (DIAM)。通过 DIAM 与 4,4'-[1,4-亚苯基双(亚甲氧基)]二苯甲醛 (PBMODB) 的缩合反应合成了七种不同的聚（偶氮甲碱-醚）。化合物的结构经FT-IR、UV-Vis、1H-NMR和13C-NMR技术证实。合成的聚（偶氮甲碱-醚）的分子量分布通过尺寸排阻色谱（SEC）确定。合成的化合物通过溶解度测试、TG-DTA和DSC表征。还通过紫外-可见分光光度计计算了聚（偶氮甲碱-醚）（Eg）的光学带隙。使用 Keithley 2400 静电计通过四点探针技术测量合成的聚（偶氮甲碱-醚）的电导率。强调合成的聚（偶氮甲碱-醚）被发现是具有相当高带隙的具有电子和光电应用潜力的绝缘体。发现合成的聚（偶氮甲碱-醚）的热稳定性能在高达 300 °C 时保持稳定。在 1000 °C 下观察到它们的炭化率为 33% 到 45%。含有柔性醚基和长烷基链的聚（偶氮甲碱-醚）在非质子有机溶剂中表现出良好的溶解性。图形概要 强调合成的聚（偶氮甲碱-醚）被发现是具有相当高带隙的具有电子和光电应用潜力的绝缘体。发现合成的聚（偶氮甲碱-醚）的热稳定性能在高达 300 °C 时保持稳定。在 1000 °C 下观察到它们的炭化率为 33% 到 45%。含有柔性醚基和长烷基链的聚（偶氮甲碱-醚）在非质子有机溶剂中表现出良好的溶解性。图形概要 强调合成的聚（偶氮甲碱-醚）被发现是具有相当高带隙的具有电子和光电应用潜力的绝缘体。发现合成的聚（偶氮甲碱-醚）的热稳定性能在高达 300 °C 时保持稳定。在 1000 °C 下观察到它们的炭化率为 33% 到 45%。含有柔性醚基和长烷基链的聚（偶氮甲碱-醚）在非质子有机溶剂中表现出良好的溶解性。图形概要 含有柔性醚基和长烷基链的聚（偶氮甲碱-醚）在非质子有机溶剂中表现出良好的溶解性。图形概要 含有柔性醚基和长烷基链的聚（偶氮甲碱-醚）在非质子有机溶剂中表现出良好的溶解性。图形概要