...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Polymer: The International Journal for the Science and Technology of Polymers >The synthesis and characterization of oligo-N-4-aminopyridine,oligo-2-[(pyridine-4-yl-imino)methyl]phenol and its some oligomer-metal complexes
【24h】

The synthesis and characterization of oligo-N-4-aminopyridine,oligo-2-[(pyridine-4-yl-imino)methyl]phenol and its some oligomer-metal complexes

机译：低聚-N-4-氨基吡啶，低聚-2-[（吡啶-4-基-亚氨基）甲基]苯酚及其一些低聚物-金属配合物的合成与表征

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The product and the oxidative polycondensation reaction conditions of oligo-4-aminopyridine were sutdied by using NaOCl as oxidant.Oligo-4-aminopyridine (4-OAP)was synthesized from the oxidative polycondensation of 4-aminopyridine (4-AP)in an aqueous solution medium acidic and neutral between 25 and 60 deg C by using NaOCl as oxidatnt.About 85% of 4-Ap was conveted to 4-OAP.The number average molecular weight,(M_n)mass average molecular weight (M_w)and polysispersity index (PDI)values of 4-OAP synthesized were found to be 270,850 g mol~-1 and 3.15,respectively,using NaOCl.The respective values of hte Schiff base were 1721,2256 mol~-1 and 1.31,respectively,using air oxygne and 2173,2372 g mol~-1 and 1.09,respectively,using NaOCl and 2749,6432 g mol~-1 and 2.33,respectively,using H_2O_2.At the optimum reactin conditions,the yield of ligo-2-[(pyridine-4-yl-imino)methyyl]phenol (OPMP)were found to be 86%(H_2O_2)and 89%(NaCl)and 95% (air oxygen).The 4-OAP and OPMP were characterized by ~1H NMR,FT-IR,UV-Vis and elemental analysis.TG analysis showed to be stable of 4-OAP against thermo-oxidative decomposition.The weight loss of 4-OAP and its schiff base oligmer was found to be 50,86.39 and 71.78% at 525,625 and 1000 deg C,respectively.Alson,new oligomeric schiff base was synthesized from condensation of 4-AP with salicylaldehyde and their structures and properties were determined.During polycondensation reacton ,a part of hte azomethine (-CH=N-)groups oxidized to carboxylic (-COOH)group.Thus,soluble fracton in water of oligo-2-[(pyridine-4-yl-imino)methyl]phenol involved in carbvoylic (-COOH)(11%)group.Besides,the structure and properties of oligomermetal complexes of oligo-2-[(pyridine-4-yl-imino)methyl]phenol (OPMP)with Cu(II),Ni(II)and Co(II)were studied.
机译：以NaOCl为氧化剂，测定了4-氨基吡啶的产物及氧化缩聚反应条件。由4-氨基吡啶（4-AP）在水溶液中的氧化缩聚反应合成了4-氨基吡啶（4-OAP）。用NaOCl作为氧化剂在25至60摄氏度之间呈酸性和中性的溶液。约有85％的4-Ap被认为是4-OAP。数均分子量，（M_n）质量平均分子量（M_w）和多分散性指数使用NaOCl合成的4-OAP（PDI）值分别为270,850 g mol〜-1和3.15。使用空气氧，席夫碱的相应值分别为1721,2256 mol〜-1和1.31。 NaOCl分别为2173,2372 g mol〜-1和1.09，H_2O_2分别为2749,6432 g mol〜-1和2.33。在最佳反应条件下，ligo-2-[（吡啶-发现4-基-亚氨基）甲基]酚（OPMP）的含量为86％（H_2O_2），89％（NaCl）和95％（空气氧）.4-OAP和OPMP的特征是〜1H NMR，FT-IR，UV-Vis和元素分析.TG分析表明4-OAP对热氧化分解是稳定的.4-OAP及其席夫碱低聚物的失重分别为50,86.39和71.78。分别在525,625和1000℃时生成％低聚物。通过4-AP与水杨醛的缩合反应合成了新的低聚席夫碱，并确定了它们的结构和性质。基团被氧化成羧基（-COOH）基团。因此，水中的可溶性苯并二氢[-COOH]（11％）基团参与了低聚-2-[（吡啶-4-基-亚氨基）甲基]苯酚。研究了低聚-2-[（吡啶-4-基-亚氨基）甲基]苯酚（OPMP）与Cu（II），Ni（II）和Co（II）的低聚物金属配合物的结构和性能。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号